Hong Kong Profits Tax Deductions and Incentives in 2026: R&D at 300%/200%, Sections 16E and 16EA, Environmental Installations

Hong Kong operates three separate capital-deduction mechanisms under profits tax: the enhanced deduction for research and development under section 16B and Schedule 45 (300% on the first HK$2,000,000 and 200% above it), the deduction for capital expenditure on acquiring intellectual property rights under sections 16E and 16EA (100% in one year for patent rights and know-how, five equal instalments over five years for six named rights), and the deduction for environmental facilities under section 16I (100% in the year the expenditure is incurred). These are three distinct regimes with different conditions, different prohibitions and different clawback rules on disposal.

Three things that decide the outcome before any saving is calculated.

One: the 300% rate reaches only activity carried on entirely in Hong Kong. Section 4(1)(b) of Schedule 45 requires a qualifying R&D activity to be “wholly undertaken and carried on in Hong Kong”. Spending on the same activity outside Hong Kong is not lost — it falls into Type A and attracts the ordinary 100%, but never the enhancement.

Two: buying an intellectual property right from an associate gives no deduction at all. Section 16EC(2) denies the deduction where the right is purchased wholly or partly from an associate — in the Inland Revenue Department’s own words, “irrespective of whether or not the price is at an arm’s-length”. A market price and a valuation report do not cure it. This is precisely the prohibition the Government proposed to relax in its 2026 consultation.

Three: environmental installations moved from five years to one, and installations owned before 1 April 2018 needed an election to get there. Section 16L, introduced by the Inland Revenue (Amendment) (No. 9) Ordinance 2018, allows the unallowed balance to be treated as incurred on 1 April 2018 and written off in full in the year of assessment 2018/19. That election is irrevocable.

The Statutory Map: Which Section Governs What

All three regimes sit in Part 4 of the Inland Revenue Ordinance (Cap. 112) and operate as exceptions to the general prohibition on deducting capital expenditure in section 17(1)(c). None of them is a rate concession — each reduces assessable profits, not the tax.

Provision of Cap. 112	Subject matter	How the deduction works
Section 16B with Schedule 45	Research and development expenditure	Type A — 100%; Type B — 300% on the first HK$2,000,000 and 200% on the balance
Section 16E	Purchase of patent rights and rights to know-how	100% for the year of assessment in whose basis period the expenditure is incurred
Section 16EA	Purchase of six named intellectual property rights	Five equal instalments over five consecutive years of assessment; compressed where protection expires sooner
Section 16EB	Sale of a specified intellectual property right	Proceeds above the unallowed amount are treated as a trading receipt
Section 16EC	Six grounds on which a deduction under section 16E or 16EA is refused	No deduction at all
Section 16G	Prescribed fixed assets — manufacturing plant, computer hardware and software	100%; a regime separate from the environmental one
Section 16H	Definitions for sections 16H to 16L	—
Section 16I	Environmental protection machinery, environmental protection insta­lla­tions, enviro­nment-frie­ndly vehicles	100%; for installations from the year of assessment 2018/19, previously five equal instalments
Section 16J	Sale of an environmental facility	Proceeds treated as a trading receipt up to the deduction previously allowed
Section 16K	Environmental facilities owned as at certain dates	Carries tax written-down value across from the deprecia­tion-a­llowance system
Section 16L	Environmental installations owned before 1 April 2018	Elective move to a single-year write-off

A boundary worth drawing at the outset. Section 16G on prescribed fixed assets and section 16I on environmental facilities do not overlap: the section 16H definition of “specified capital expenditure” excludes “any capital expenditure that may be deducted under any other section of Part 4 of the Ordinance”. The same expenditure cannot travel down both routes. Author’s assessment: this boundary is routinely lost in commentary that presents 16G and 16I as alternative ways of writing off the same equipment.

The chain of instruments that produced the current position.

Instrument	Number and gazettal	What it did	From year of assessment
Revenue Ordinance 2008	2008	Introduced sections 16H–16K and Schedule 17: 100% for environmental machinery, 20% a year over five years for environmental installations	2008/09
Inland Revenue (Amendment) (No. 3) Ordinance 2010	Ord. No. 10 of 2010, 18 June 2010	Added enviro­nment-frie­ndly vehicles to Part 3 of Schedule 17; raised the first-year deduction from 72% to 100%	2010/11
Inland Revenue (Amendment) (No. 3) Ordinance 2011	Ord. No. 21 of 2011, 16 December 2011	Introduced sections 16EA, 16EB and 16EC: copyright, registered design, registered trade mark	2011/12
Inland Revenue (Amendment) (No. 3) Ordinance 2018	Ord. No. 13 of 2018, 29 March 2018	Introduced the two-tiered profits tax rates	2018/19
Inland Revenue (Amendment) (No. 5) Ordinance 2018	Ord. No. 24 of 2018, 29 June 2018	Added rights in layout-design (topography) of integrated circuits, plant varieties and performances to the five existing categories	2018/19
Inland Revenue (Amendment) (No. 7) Ordinance 2018	Ord. No. 29 of 2018, 2 November 2018	Introduced Schedule 45 and the 300%/200% enhancement	Expenditure incurred on or after 1 April 2018
Inland Revenue (Amendment) (No. 9) Ordinance 2018	Ord. No. 32 of 2018, 23 November 2018	Moved environmental installations from five years to one; introduced section 16L	2018/19
Inland Revenue (Amendment) (Tax Concessions for Intellectual Property Income) Ordinance 2024	Ord. No. 17 of 2024, 5 July 2024	Introduced the patent box — Schedule 17FD, a 5% rate	2023/24

No instrument enacted between 2019 and 2026 has amended sections 16B, 16E, 16EA, 16EB, 16EC or 16G–16L. In the Inland Revenue Department’s complete published amendment register for Cap. 112, not one instrument from those eight years touches R&D, the IP deductions or the environmental deductions. Two warranted a separate check because their subject matter is adjacent — Ord. No. 34 of 2024 on leased-premises reinstatement and allowances for buildings and structures, and Ord. No. 17 of 2024 on the patent box — and neither reaches the operative provisions of these sections. For precision: Schedule 45 itself was formally amended three times — by Ord. No. 18 of 2021, Ord. No. 17 of 2022 and Ord. No. 17 of 2024 — but in each case the amendment touched only the bracketed source-note in the Schedule’s heading and left every operative provision untouched.

> A sourcing caveat that should be stated openly. Hong Kong e-Legislation at elegislation.gov.hk is closed to automated access: every path on that domain is refused under its robots.txt rules. Statutory wording in this analysis is therefore taken from the Inland Revenue Department’s own published materials — Departmental Interpretation and Practice Notes (DIPN) Nos. 5, 49 and 55, which reproduce and interpret the provisions — together with bill texts and government releases. That is a primary administrative source, but it is not the consolidated enactment. One route around the block was found: the Inland Revenue Department publishes the ordinances themselves under /eng/pdf/iro/gazette/, and Schedule 45 as gazetted, together with sections 16I(3A), 16I(3B) and 16L, was read there. That is not the consolidated text, but it is the authentic text of the enactment. Where the current consolidated wording is decisive, the text of Cap. 112 should be opened by hand.

What a Deduction Is Actually Worth: Profits Tax Rates in 2026

Hong Kong’s profits tax rate for corporations is 8.25% on the first HK$2,000,000 of assessable profits and 16.5% on the balance; for unincorporated businesses the rates are 7.5% and 15%. These two-tiered rates were introduced by the Inland Revenue (Amendment) (No. 3) Ordinance 2018 (Ord. No. 13 of 2018, gazetted 29 March 2018) and apply “to any year of assessment commencing on or after April 1, 2018”. As at August 2026 the Inland Revenue Department’s rate table carries no later entry: the rates for the years of assessment 2025/26 and 2026/27 are the same.

Measure	Corporations	Uni­ncorpo­rated businesses
Normal rate, from the year of assessment 2008/09	16.5%	15%
Two-tiered rate, from 2018/19: first HK$2,000,000	8.25%	7.5%
Two-tiered rate: above HK$2,000,000	16.5%	15%
One-off tax reduction for the year of assessment 2025/26	100%, capped at HK$3,000 per case	100%, capped at HK$3,000 per case

The one-off profits tax reduction for the year of assessment 2025/26 is 100%, subject to a ceiling of HK$3,000 per case. It was announced in the 2026-27 Budget and enacted by the Inland Revenue (Amendment) (Tax Concessions, Concessionary Deductions and Allowances) Ordinance 2026 (Ord. No. 2 of 2026, gazetted 22 May 2026). It is a rebate, not a rate change, and it does not affect how capital deductions work.

For the subject of this analysis, what the rates really determine is the cash value of one dollar of deduction.

Deduction	Profits below HK$2,000,000	Profits above HK$2,000,000
HK$1 of ordinary deduction (100%)	saves HK$0.0825	saves HK$0.165
HK$1 of Type B expenditure within the first HK$2,000,000 (300%)	saves HK$0.2475	saves HK$0.495
HK$1 of Type B expenditure above HK$2,000,000 (200%)	saves HK$0.165	saves HK$0.33
HK$1 spent on an environmental installation (100% in one year)	saves HK$0.0825 in year one	saves HK$0.165 in year one

Author’s assessment: the enhanced R&D deduction is by some distance the largest incentive in Hong Kong’s profits tax system, and nothing else in it operates on the same scale. A company taxed at the upper rate recovers 49.5% of every dollar of qualifying R&D spending within the first HK$2,000,000. By comparison, a section 16E deduction returns 16.5%, and a section 16EA deduction returns the same 16.5% spread across five years.

> The other side of the same arithmetic, which deserves stating. All three regimes are deductions, not credits. A company with no assessable profits receives no money from them: it receives a tax loss, carried forward indefinitely under section 19C. The practical consequence: for a development-stage business not yet in profit, the enhancement creates a deferred asset rather than current-year cash. That changes the payback calculation on an R&D programme without changing the case for running it in Hong Kong.

How the Enhanced R&D Deduction Is Built: Section 16B and Schedule 45

The enhanced deduction for research and development is granted by section 16B of Cap. 112, with the entire substantive regime carried in Schedule 45, introduced by the Inland Revenue (Amendment) (No. 7) Ordinance 2018 (Ord. No. 29 of 2018, gazetted and enacted 2 November 2018). The regime reaches payments made and expenditure incurred on or after 1 April 2018, so it operates retrospectively by reference to the date of enactment.

Two dates need to be kept apart. The Commencement Date is 2 November 2018. The date from which the regime reaches expenditure is 1 April 2018. Schedule 45 calls the gap between them the specified period and creates a separate category for it — “interim Type B expenditure” — dealt with in its own section below.

Schedule 45 sorts all R&D spending into two classes, and the entire economics of the regime turns on which class a given item falls into.

Class	What it is	Deduction rate
Type A expenditure	Any R&D expenditure that is not Type B — section 8 of Schedule 45	100%
Type B expenditure	A payment to a designated local research institution for a qualifying R&D activity; a payment to such an institution whose object is to undertake qualifying R&D of the relevant class; or qualifying expenditure — section 10 of Schedule 45	300% on the first HK$2,000,000 and 200% above it

Section 10 of Schedule 45, as reproduced by the Inland Revenue Department in DIPN 55:

“A Type B expenditure, in relation to a trade, profession or business in respect of which a person is chargeable to profits tax, is: (a) for a payment made, or other expenditure incurred, on or after the Commencement Date — an R&D expenditure falling within any of the following descriptions: (i) a payment to a designated local research institution for a qualifying R&D activity related to the trade, profession or business; (ii) a payment to a designated local research institution which has, as an object, the undertaking of a qualifying R&D activity related to the class of trade, profession or business to which the trade, profession or business belongs, where the payment is used for pursuing that object; (iii) a qualifying expenditure related to the trade, profession or business; or (b) for a payment made, or other expenditure incurred, during the specified period — an interim Type B expenditure.”

Section 8 of Schedule 45 defines Type A residually and, like section 10, has two limbs: “A Type A expenditure… is: (a) for a payment made, or other expenditure incurred, on or after the Commencement Date — an R&D expenditure other than a Type B expenditure; or (b) for a payment made, or other expenditure incurred, during the period beginning on 1 April 2018 and ending immediately before the Commencement Date (i.e. the specified period) — an interim Type A expenditure.”

What the residual definition means in practice. Type A is not “inferior” R&D. It is all R&D that fails the qualification gate: development performed outside Hong Kong, payments to an overseas university, expert consultancy opinions, and research activity expressly excluded from the qualifying class. The Inland Revenue Department’s own illustration in its guidance on Form S3 is “a payment made to an overseas university for qualifying R&D activities” — that is Type A, and the deduction is 100%.

What counts as R&D expenditure — section 6(1) of Schedule 45:

“an R&D expenditure, in relation to a trade, profession or business in respect of which a person is chargeable to profits tax, is: (a) a payment to an R&D institution for an R&D activity related to the trade, profession or business; (b) a payment to an R&D institution which has, as an object, the undertaking of an R&D activity related to the class of trade, profession or business to which the trade, profession or business belongs, where the payment is used for pursuing that object; or (c) any other expenditure on an R&D activity related to the trade, profession or business, including capital expenditure except to the extent that it is expenditure on land or buildings or on alterations, additions or extensions to buildings.”

An “R&D institution” under section 6(5) of Schedule 45 is a designated local research institution, or a university or college. Hong Kong universities and colleges are R&D institutions by definition and need no separate designation; every other organisation does.

> Author’s assessment: the section-plus-schedule structure here is not a drafting detail but a source of error. A citation to “section 16B” without a Schedule 45 section number cannot be checked: section 16B itself does little more than grant the deduction and disapply it where the expenditure is deductible under another provision. Every condition, definition, rate, prohibition and clawback rule lives in Schedule 45, and a proper citation always carries its section number.

What Counts as a Qualifying R&D Activity — and What Is Carved Out

A qualifying R&D activity is an R&D activity falling within paragraph (a), (c) or (d) of section 2 of Schedule 45 that is wholly undertaken and carried on in Hong Kong. Section 4(1) of Schedule 45: “A qualifying R&D activity is an R&D activity that — (a) falls within the description in section 2(a), (c) or (d) of this Schedule; and (b) is wholly undertaken and carried on in Hong Kong.”

Section 2 of Schedule 45 defines four kinds of R&D activity:

“An R&D activity is — (a) an activity in the fields of natural or applied science to extend knowledge; (b) a systematic, investigative or experimental activity carried on for the purposes of any feasibility study or in relation to any market, business or management research; (c) an original and planned investigation carried on with the prospect of gaining new scientific or technical knowledge and understanding; or (d) the application of research findings or other knowledge to a plan or design for producing or introducing new or substantially improved materials, devices, products, processes, systems or services before they are commercially produced or used.”

The point usually missed: paragraph (b) is deliberately excluded from the qualifying class. A feasibility study, and market, business or management research, remain R&D activity under section 2 but can never become a qualifying R&D activity under section 4(1), and so can never be Type B. The practical consequence: feasibility work goes into Type A at 100%, not 300%.

Section 4(2) of Schedule 45 adds four freestanding exclusions:

“A qualifying R&D activity does not include — (a) any efficiency survey, feasibility study, management study, market research or sales promotion; (b) the application of any publicly available research findings or other knowledge to a plan or design, with an anticipated outcome and without any scientific or technological uncertainty; (c) an activity that does not seek to directly contribute to achieving an advance in science or technology by resolving scientific or technological uncertainty; or (d) any work to develop the non-scientific or non-technological aspect of a new or substantially improved material, device, product, process, system or service.”

What the company does	Qualifying activity?	Class of expenditure
Developing a new algorithm against unresolved technical uncertainty, entirely in Hong Kong	Yes	Type B — 300%/200%
The same development performed by a team in another jurisdiction	No — not wholly carried on in Hong Kong	Type A — 100%
A feasibility study on the project	No — sections 2(b) and 4(2)(a)	Type A — 100%
Applying a publicly available solution with a predictable outcome	No — section 4(2)(b)	Type A — 100%
Designing the packaging and branding of a new product	No — section 4(2)(d), a non-scie­ntific aspect	Type A — 100%
A payment to a Hong Kong university for qualifying research	Yes	Type B — 300%/200%
A payment to an overseas university for the same research	No — the activity is outside Hong Kong	Type A — 100%

The “wholly undertaken and carried on in Hong Kong” test applies to the activity, not to the project as a whole.The Inland Revenue Department’s position in DIPN 55 is that an enterprise may claim the enhancement on the Hong Kong components of a project even where other elements of the same project are performed overseas, provided the Hong Kong activities themselves meet the qualifying criteria.

Author’s assessment: this is the most practically consequential position in DIPN 55, and the most frequently distorted. The “wholly in Hong Kong” wording is regularly read as meaning that any cross-border R&D project loses the enhancement in its entirety. It does not: the gate operates at activity level. But the opposite simplification is just as dangerous — a single indivisible piece of development cannot be split into “Hong Kong” and “overseas” portions retrospectively, in the accounts. The split has to reflect how the work was actually organised and be evidenced by the project record.

Apportionment where the business is partly offshore sits in section 13(3) of Schedule 45 and applies to Type A: where a trade, profession or business is carried on partly in and partly outside Hong Kong, the deductible Type A amount is “the appropriate proportion of the expenditure that the Commissioner considers is reasonable in the circumstances”.

For companies whose concern is not only the deduction but whether Hong Kong will certify them as resident for treaty purposes, the certificate procedure is analysed separately in Hong Kong Certificate of Resident Status 2026.

What Actually Falls into Type B: Staff, Consumables and the Carve-Outs

Qualifying expenditure under section 12(1) of Schedule 45 has two categories and only two: expenditure in relation to an employee directly and actively engaged in a qualifying R&D activity, and expenditure on a consumable item used directly in such an activity. Schedule 45 offers no third route to the in-house enhancement.

Category of expenditure	Type B?	Provision
Salary of an employee directly and actively engaged in qualifying R&D	Yes	Sections 12(1)(a), 12(5)
Employer MPF contributions and insurance premiums for that employee	Yes	Section 12(5)
Directors’ remu­nera­tion	No	Expressly excluded by section 12(5)(b)
Accounting, admi­nistra­tive and secretarial services	No — not “directly and actively engaged”	Section 12(4)(a­)(i­)–(iii)
Consumable items, including fuel, power and water	Yes	Section 12(1)(b)
A payment to a designated local research institution for qualifying R&D	Yes	Section 10(a)(i)–(ii)
Plant and machinery used for R&D	No enhancement — 100%	DIPN 55: “No additional deduction would be given for an expenditure incurred on the purchase of plant or machinery used in carrying out a qualifying R&D activity”
Land, buildings, alterations, additions and extensions	Excluded entirely	Section 6(1)(c) removes it from the definition of R&D expenditure
Acquiring rights generated from an R&D activity	Excluded entirely	Section 6(2)

The composition of staffing costs is set by section 12(5) of Schedule 45 and covers “salary, wages… ordinary annual contribution to a fund… ordinary annual premium in respect of a contract of insurance… contributions made to a mandatory provident fund scheme… any other benefit that constitutes a cash outlay paid by the employer”. Directors’ remuneration is excluded by section 12(5)(b).

A consumable item is defined in DIPN 55 without a subsection reference as a material or item, including fuel, power and water, that “when used, is consumed or transformed in such a way that it is no longer usable in its original form”. Section 12(1)(b) itself only describes the category of expenditure — “an expenditure on a consumable item that is used directly in a qualifying R&D activity”.

Section 6(2) of Schedule 45 reads: “R&D expenditure does not include payments or expenditures for acquiring rights generated from an R&D activity”. This is the provision that draws the border between the section 16B regime and the sections 16E and 16EA regime: generate the right yourself and you deduct the development spend under section 16B; buy a finished right and you deduct the purchase price under section 16E or 16EA. The same asset cannot travel down both routes.

Apportionment is mandatory where an employee is only partly engaged in R&D. DIPN 55: “Where only a proportion of an employee’s work constitutes direct and active engagement in a qualifying R&D activity, then only that proportion of the staffing costs can qualify… apportionment method must be used to separate out eligible and ineligible expenditure.” The same rule applies to consumables used only in part.

Author’s assessment: the narrowness of the qualifying-expenditure list is the biggest gap between expectation and reality in this regime. Companies budgeting an R&D programme habitually apply the enhancement to the whole project cost. On a typical software development cost stack — salaries, cloud infrastructure, developer tooling licences, hardware, rent — the enhancement reaches only the salaries of directly engaged staff and consumed materials. Rent, third-party software licences and equipment attract the ordinary 100%.

What this means for record-keeping. Because both the staff and the materials limbs require apportionment, the regime in practice demands project-level time recording from day one. Reconstructing an employee’s share of qualifying activity retrospectively, two years after the spend and at the point of enquiry, is close to impossible. This is not a formality: apportionment is where claimed amounts most often come apart.

The filing mechanics. The enhancement is claimed not in the return itself but through a supplementary form: Supplementary Form S3, “Expenditure on research and development”, which requires a project-by-project breakdown between Type A and Type B.

Computing the 300%/200% Deduction — and Whether the HK$2,000,000 Tier Is Shared Across a Group

The computation is set by section 13 of Schedule 45 and applies to the aggregate Type B expenditure for the basis period of a year of assessment. As reproduced in DIPN 55:

“(i) if the total amount of the expenditures exceeds $2,000,000 — $6,000,000 (i.e. $2,000,000 × 300%) plus 200% of the part of the expenditures that exceeds $2,000,000; or (ii) if the total amount of the expenditures does not exceed $2,000,000 — 300% of the expenditures.”

For Type A, the same section 13 provides “subject to section 13(3) of Schedule 45, 100% of the expenditures”. The Ordinance itself puts it as “for Type A expenditures — subject to subsection (3), 100% of the expenditures”.

There is no ceiling on the enhanced deduction. DIPN 55: “There is no cap on the amount of enhanced tax deduction.” The government release of 2 November 2018 carries the identical sentence.

The HK$2,000,000 tier is measured per basis period of a year of assessment — not per project, and not across the life of the regime.

Type B expenditure in the year	Deduction	Tax saved at 16.5%
HK$500,000	HK$1,500,000	HK$247,500
HK$2,000,000	HK$6,000,000	HK$990,000
HK$5,000,000	HK$12,000,000 (HK$6,000,000 + 200% × HK$3,000,000)	HK$1,980,000
HK$20,000,000	HK$42,000,000 (HK$6,000,000 + 200% × HK$18,000,000)	HK$6,930,000

HK$5,000,000 of Type B expenditure in a year produces a HK$12,000,000 deduction and reduces tax by HK$1,980,000 at 16.5%. That is 39.6% of the cash actually spent, returned through the tax system.

One question the published sources do not answer directly: whether the HK$2,000,000 tier is shared among connected entities or applies to each person separately. Section 13 of Schedule 45 is framed by reference to “a trade, profession or business in respect of which a person is chargeable to profits tax” and to that person’s basis period. Neither Schedule 45 as reproduced by the Inland Revenue Department, nor DIPN 55, nor the guidance on Form S3 contains an aggregation rule for connected persons.

The distinction is worth drawing expressly, because the statute contains the opposite rule immediately alongside. For the two-tiered rates, the connected-entity restriction is unambiguous: the government release of 29 March 2018 states that “The application of the two-tiered rates is restricted to only one enterprise nominated among connected entities”. The HK$2,000,000 threshold in the two-tiered rates and the HK$2,000,000 threshold in the R&D enhancement are two different thresholds under different rules, and the coincidence of the figure does not imply a coincidence of treatment.

Author’s assessment, flagged as an assessment. The framing of section 13 around “a person”, together with the absence of any aggregation rule, points to the tier applying per taxpayer. But no provision confirming that could be found in open sources, and the consolidated text of Schedule 45 is closed to automated access. For a group planning to spread R&D spending across several Hong Kong companies, this is a question to close with a written enquiry to the Inland Revenue Department rather than by inference.

Expenditure incurred in the specified period, from 1 April to immediately before 2 November 2018, forms a separate class of “interim Type B expenditure”. It covers payments to bodies that held designated local research institution status at the Commencement Date, together with qualifying expenditure meeting the amended criteria. Its significance today is historical: it closed the gap between the date from which the regime applies and the date it was enacted.

When the Enhancement Is Refused: Section 14 of Schedule 45

Section 14 of Schedule 45 lists the grounds on which no deduction is allowed under section 16B at all, and three of them are structural: the rights are not vested in the enterprise, the R&D is undertaken for someone else, or the cost is met by a subsidy. These grounds remove the deduction entirely rather than reducing it.

Ground	Provision	What is tested
Rights in the output not fully vested in the enterprise	Section 14(a)(i)	“if any rights generated from the R&D activity are not, or will not be, fully vested in the enterprise”
R&D undertaken for another enterprise	Section 14(a)(ii)	“if the R&D activity concerned is undertaken for another enterprise”
Expenditure met by a subsidy or grant	Section 14(b)	Funding received removes the corresponding portion of the spend
A defective cost contribution arrangement	Section 14 as interpreted in DIPN 55	The nine conditions below
An arrangement entered into to obtain a tax benefit	Section 14	—
Double deduction of the same expenditure	Section 14	—

The vesting requirement is read broadly. On the Inland Revenue Department’s view, “rights” reaches patents, unregistered know-how and work-in-progress intangibles. Co-ownership is permitted where all co-owners participated in the activity. A structure in which a special purpose vehicle holds the rights as nominee is acceptable provided beneficial ownership remains with the enterprise actually performing the work.

The bar on R&D “undertaken for another enterprise” has an economic rationale worth understanding. The Department’s reasoning is that a contractor is paid regardless of the research outcome and therefore bears no risk, while the enhancement is aimed at the party that does. That said, where the enterprise is the economic owner of the intellectual property and performs the DEMPE functions while associates pay it royalties, the arrangement does not preclude the deduction.

Cost contribution arrangements are permitted, subject to nine conditions set out in DIPN 55: participants derive mutual and proportionate benefits; the nature and extent of each participant’s interest is specified; there are no payments beyond the contributions under the arrangement; contributions are valued under Hong Kong’s transfer pricing rules; balancing payments are provided for; adjustments are provided for on a change of participants; the enterprise actively participates and holds the DEMPE capabilities; the rights are co-owned; and the activity is undertaken for all participants.

Author’s assessment: section 14 is where the R&D enhancement meets the typical multinational group structure, and meets it badly. The standard arrangement in which a Hong Kong company performs development under contract with its parent on a cost-plus basis, with the rights passing to the customer, breaches sections 14(a)(i) and 14(a)(ii) simultaneously: the rights are not vested in the enterprise and the activity is undertaken for another person. The cost is not a smaller deduction but no enhancement at all — the spend is deducted as ordinary revenue expenditure and gets nothing more.

What this means for structuring. To reach the enhancement, the Hong Kong company has to be the principal in the development rather than a contractor: bearing the risk of failure, owning the output and performing the DEMPE functions. That decision belongs to the group’s contractual architecture, not to the tax return. Recharacterising the relationship after the expenditure has been incurred is not an option.

DEMPE functions and transfer pricing sit close to how the group’s Hong Kong corporate structure is built and who is disclosed as controlling it; the significant-controllers register obligations are analysed separately in The Significant Controllers Register in Hong Kong.

What Happens on a Sale of the R&D Output, and on Its Use Offshore

The enhancement is not unconditional: sections 16 and 17 of Schedule 45 return part of the benefit to the tax base when R&D output is sold, and section 15(1)(bc) charges receipts from its use outside Hong Kong. These are two distinct provisions with different objects.

Section 16 of Schedule 45 governs the sale of plant and machinery on which a deduction has been allowed and is, on the Inland Revenue Department’s own description, “substantially the same as the provisions replaced” — a carry-over of the earlier treatment.

Section 17 of Schedule 45 governs the sale of rights generated from an R&D activity and carries a rewritten formulafor the amount treated as a trading receipt. DIPN 55 describes it as “a rewrite of the old provisions to revise the formula for calculating the amount of the proceeds to be treated as trading receipts after the introduction of the enhanced tax deduction”.

The reason for the rewrite is transparent and worth stating. If only the cash actually spent were brought back on a sale of the rights, a taxpayer who had deducted 300% would keep the difference permanently. Section 17’s formula was aligned with the enhanced rate. Its exact terms could not be reproduced from open sources: DIPN 55 does not set them out and the consolidated text of Schedule 45 is closed to automated access. Anyone planning an exit from an R&D asset by selling the rights needs to open that formula in the enactment itself.

Section 15(1)(bc) of Cap. 112 charges to profits tax, as a trading receipt, sums received “for the use, or the right to the use, outside Hong Kong of any intellectual property or know-how generated from any R&D activity (in respect of which deduction is allowable under section 16B)”, together with sums for imparting or undertaking to impart connected knowledge.

This is the mirror image of the deduction, and its logic runs as follows. Hong Kong has funded the creation of the intellectual property through an enhanced deduction — and in exchange taxes the income from exploiting it abroad, which under the territorial principle might otherwise fall outside the net. The practical consequence: a company that took a 300% deduction on development and then licenses the output to overseas users cannot treat the royalties as offshore income. Section 15(1)(bc) brings them into charge directly.

Event	Provision	Tax consequence
Sale of plant on which a deduction was allowed	Section 16 of Schedule 45	Proceeds treated as a trading receipt
Sale of rights generated from R&D	Section 17 of Schedule 45	Part of the proceeds treated as a trading receipt under the rewritten formula
Licensing the R&D output for use outside Hong Kong	Section 15(1)(bc)	Royalties are chargeable to profits tax; offshore treatment is unavailable
Receipt of a subsidy or grant towards the same expenditure	Section 14(b) of Schedule 45	No deduction to that extent

> Author’s assessment: the pairing of the enhancement with section 15(1)(bc) makes the R&D regime a bargain rather than a gift. Hong Kong funds up to 49.5% of qualifying cost and in return reserves the right to tax the income from the resulting asset wherever it is exploited. For a company planning to migrate the intellectual property to another jurisdiction after development, that is decisive: the deduction has been taken, the income from the asset stays in the Hong Kong base, and section 15(1)(bc) applies regardless of where the licensee sits.

Designated Local Research Institutions: How Outsourced R&D Reaches 300%

A designated local research institution (DLRI) is a university, college, institute or other organisation in Hong Kong undertaking qualifying R&D activities and designated by the Commissioner for Innovation and Technology under section 19 of Schedule 45. A payment to such a body for a qualifying R&D activity is Type B expenditure and attracts the 300%/200% enhancement, even where the paying enterprise has neither a laboratory nor research staff of its own.

Hong Kong universities and colleges are R&D institutions by definition under section 6(5) of Schedule 45 and need no separate designation. Every other body — sectoral research centres, independent laboratories, engineering firms — does.

The current DLRI register is maintained and published by the Innovation and Technology Commission in two lists.The version current at the time of writing is dated July 2026, which confirms that the register is actively maintained rather than frozen at the introduction of the regime.

Retrospective designation within six months. Sections 6(3) and 10(2) of Schedule 45 allow a claim in respect of a payment to a body that acquires DLRI status within six months after the date of payment. On the Inland Revenue Department’s guidance, where designation occurs in the following year of assessment the claim survives even if the original assessments have become final and conclusive.

What the six-month rule solves in practice. It addresses a genuine sequencing problem: a body applies for designation after it wins its first engagement, not before. But the window is short and runs from the date of payment, not the date of the contract. A customer is better served checking the contractor’s entry in the register before paying rather than after — and, if there is no entry, asking whether an application is in.

Who the company pays	Class of expenditure	Deduction rate
A Hong Kong university or college for qualifying R&D	Type B	300% / 200%
A body on the DLRI register for qualifying R&D	Type B	300% / 200%
A body that obtains DLRI status within six months after payment	Type B	300% / 200%
A Hong Kong contractor without DLRI status	Type A	100%
An overseas university or laboratory	Type A	100%
An expert for a consultancy opinion	Type A	100%

Author’s assessment: the DLRI route is the most underused feature of the regime. A company with no in-house research function in Hong Kong usually assumes the enhancement is out of reach. Yet a payment to a registered institution for qualifying development attracts exactly the same 300%/200% rate as in-house salaries — without the timesheet discipline and staff-cost apportionment the in-house route demands. The practical consequence: for a mid-sized company the external route is often both easier to administer and more robust on enquiry.

> The section 14 restriction still applies here. Rights in output produced by the contractor must be fully vested in the customer. A research agreement that leaves the institute holding the rights, or a share of them, costs the customer the enhancement under section 14(a)(i). That is a term of the contract, not of the tax return, and it needs checking before signature.

Section 16E: Patent Rights and Know-How — 100% in One Year

Section 16E of Cap. 112 allows capital expenditure on the purchase of patent rights and rights to know-how to be deducted in full for the year of assessment in whose basis period the expenditure is incurred. DIPN 49 puts it as: “For patent rights or rights to know-how, a full deduction is allowable under section 16E(1) for the year of assessment in the basis period for which the expenditure is incurred.”

Section 16E was enacted in 1983 and amended twice, in 1992 and 2011. It predates the rest of the intellectual property regime and remains separate from section 16EA both in the assets it reaches and in the write-off period.

Element	Position
Assets covered	Patent rights; rights to any know-how
Deduction period	100% for the year of assessment in whose basis period the expenditure is incurred — section 16E(1)
What the expenditure includes	The purchase price, together with “legal expenses and valuation fees incurred in connection with the purchase” — section 16E(1A)
Pre­-comme­ncement expenditure	Treated as incurred on the first day the business is carried on — section 16E(3A)
Partial use	Apportionment under section 16E(2)
Sale	Proceeds treated as a trading receipt — section 16E(3)
Co­mmissio­ner’s power on price	Determination of the “true market price” — section 16E(8)

“Patent rights” are the right to do or authorise the doing of anything that would, but for that right, infringe a patent. “Know-how” is any industrial information or techniques likely to assist in the manufacture or processing of goods or materials.

Registration requirements differ by asset. Per DIPN 49, a patent and a plant variety right must have been granted, and a design and a trade mark registered, at the date of acquisition. No registration requirement applies to rights to know-how, copyright, performers’ economic rights or layout-design (topography) rights. Overseas registration counts equally with Hong Kong registration.

Three conditions without which there is no deduction at all.

•          The right must be purchased, not self-generated. DIPN 49: where the right was created by the enterprise itself, no deduction arises under section 16E or 16EA “because such patent right, right to know-how or SIPR was not purchased by the person”. Development spending then travels under section 16B instead.

•          What is acquired must be ownership, not a right to use. This has its own section below.

•          The right must be used in producing chargeable profits. Partial use triggers apportionment.

Author’s assessment: the purchased-versus-created boundary is the cleanest line in Hong Kong’s whole capital-deduction system, and it is worth holding in mind when planning. The Inland Revenue Department’s own illustration contrasts two cases: HK$2,000,000 spent developing a patentable solution in-house travels under section 16B and can attract the enhancement; buying a finished US patent travels under section 16E and attracts 100%. The regimes neither overlap nor compete — section 6(2) of Schedule 45 separates them by excluding the acquisition of rights generated from R&D activity from R&D expenditure.

> What this means for M&A and technology purchases. Buying a patent delivers a full deduction in year one — the most favourable timing available anywhere in the system. But it is wiped out entirely if the seller turns out to be an associate: section 16EC(2) denies the deduction unconditionally in that case. Connection between the parties needs testing before the deal is structured, not after completion.

Section 16EA: Six Named Rights and a Deduction in Five Equal Instalments

The statutory term “specified intellectual property right” (SIPR) is defined in section 16EA(11) of Cap. 112 and covers six assets: copyright, performer’s economic right, protected layout-design (topography) right, protected plant variety right, registered design and registered trade mark. Together with patent rights and rights to know-how under section 16E, the capital-deduction regime reaches eight categories of intellectual property.

The deduction is given in five equal amounts over five consecutive years of assessment, starting with the year in whose basis period the expenditure is incurred. The provision is section 16EA(3), not 16EA(1). DIPN 49: “deduction of the capital expenditure is to be allowed by 5 equal amounts over 5 consecutive years starting from the year of assessment in the basis period for which the capital expenditure is incurred.”

Where the right’s protection expires within the five-year period, the deduction is compressed into the shorter period — section 16EA(4). DIPN 49: it is spread “over the years of assessment from the year of purchase to the year in which the right expires”.

Right	Maximum protection per DIPN 49	Registration required at acquisition
Copyright	50 years; 25 years for the typographical arrangement of a published edition	No
Performer’s economic right	50 years	No
Layou­t-de­sign (topography) right	15 years unco­mmercia­lised; 10 years from first commercial exploitation	No
Plant variety right	25 years for trees and vines; 20 years otherwise	Yes — must be granted
Registered design	5 years renewable, up to 25 years	Yes
Registered trade mark	10 years, indefinitely renewable every 10 years	Yes
Patent rights (s. 16E)	Per patent law	Yes — the patent must be granted
Rights to know-how (s. 16E)	No limit	No

A trade mark can be protected in perpetuity and yet its cost is still spread over five years. DIPN 49: “protection of a trade mark can be perpetual provided that registration is renewed every 10 years.” Section 16EA(4) cannot help here, because it only ever shortens the period.

Three of the six rights — layout-design (topography), plant varieties and performances — were added by the Inland Revenue (Amendment) (No. 5) Ordinance 2018 (Ord. No. 24 of 2018, gazetted 29 June 2018) with effect from the year of assessment 2018/19. The government release on enactment names them expressly — “rights in layout design (topography) of integrated circuits, plant varieties and performances” — as additions to “the existing five categories”, being patents, know-how, copyright, registered designs and registered trade marks.

The expenditure that qualifies under section 16EA is set by section 16EA(11) and, as under section 16E(1A), reaches legal expenses and valuation fees incurred in connection with the purchase.

Expenditure incurred before the business commences is treated as incurred on the first day it is carried on — section 16EA(10).

The Commissioner’s power to substitute the price sits in section 16EA(9), parallel to section 16E(8). Per DIPN 49, the Commissioner may determine the “true market price” where in his opinion the consideration does not represent true market value; a valuation report supplied by the taxpayer is “the starting point”.

Apportionment for partial use sits in section 16EA(7), parallel to section 16E(2).

> Author’s assessment: the five-year spread under section 16EA is not a “worse” regime but a different one in kind. The difference between sections 16E and 16EA is not the amount — both give 100% of the cost — but purely the timing of recognition. The practical consequence: on the purchase of a portfolio containing both patents and trade marks, the allocation of price between assets directly determines how much of the deduction lands in year one. That makes purchase price allocation a negotiating point with tax consequences rather than a mechanical exercise.

Section 16EC: Six Grounds on Which Sections 16E and 16EA Give Nothing

Section 16EC of Cap. 112 sets out six freestanding prohibitions and one carve-out, and each prohibition removes the deduction entirely. DIPN 49 on the section as a whole: “Section 16EC provides for non-deduction of expenditure in various circumstances and applies to patent rights, rights to any know-how as well as SIPRs.” The subsections differ in reach, however: DIPN 49 paragraph 71 renders section 16EC(1) as confined to specified rights — “Section 16EC(1) provides that no deduction is allowable in respect of any SIPR purchased by a person if…” — while subsections (2) to (4) also reach patent rights and rights to know-how.

Provision	Prohibition	What is tested
Section 16EC(1) — specified rights only	Purchase following early termination of a pre-existing licence	The Commissioner considers that “having regard to the early termination of the licence, the consideration for the purchase is not reasonable consideration in the circumstances of the case”
Section 16EC(2)	Purchase from an associate	No deduction where the right is purchased wholly or partly from an associate, “i­rrespe­ctive of whether or not the price is at an arm’s-le­ngth”
Section 16EC(3)	Transactions through a trust	A purchase or sale by a trustee or a trustee­-co­ntrolled corporation is treated as made by each of them and by the beneficiary
Section 16EC(4)(a)	Sale and licence back	—
Section 16EC(4)(b)	The right used wholly or principally outside Hong Kong	Full text below
Section 16EC(4)(c)	Leveraged licensing	The consideration is financed “directly or indirectly by a non-recourse debt”
Section 16EC(5)	Carve-out from the prohibition for genuine commercial financing	Three conditions, below

Section 16EC(4)(b), as rendered in DIPN 49:

“Section 16EC(4)(b) stipulates that no deduction is allowable under section 16E or 16EA in respect of any patent right, right to know-how or SIPR purchased by a person (i.e. the licensor or owner) if: (a) at any time when the patent right, right to know-how or SIPR is owned by the person, another person holds rights as a licensee under a licence of the patent right, right to know-how or SIPR; and (b) the patent right, right to know-how or SIPR is, while the licence is in force, used wholly or principally outside Hong Kong by a person other than the person who owns the patent right, right to know-how or SIPR.”

The policy, in the Department’s own words, is to deny relief where the right is used outside Hong Kong by someone other than the owner to produce profits not chargeable in Hong Kong.

Two limits on this prohibition that need reading precisely. First, it bites only where there is a licensee: an owner’s own use of the right outside Hong Kong does not trigger it. Second, the Department states that it will apply the provision pragmatically — “the Commissioner is prepared to adopt a pragmatic approach in applying the provisions” — and gives examples where it does not bite, including where the owner itself uses the right in Hong Kong, or where separate marks are registered in separate jurisdictions.

The section 16EC(5) carve-out applies on three conditions: the right is bought from the end-user at a price not more than the end-user paid its supplier; the end-user acquired it from the supplier on or after the relevant commencement date; and no deduction for the purchase cost had been given to the end-user before the taxpayer’s purchase.

Author’s assessment: section 16EC(2) is the single most serious practical obstacle in Hong Kong’s intellectual property regime. An intra-group transfer of rights between related companies is an ordinary step in a reorganisation, a portfolio consolidation or a move of the IP-holding centre. The prohibition is unconditional: a market price, an independent valuation and full transfer pricing compliance do not lift it. The cost is total loss of the deduction on the whole acquisition price, not an adjustment to the amount.

> A distinction worth drawing separately. Section 16EC(4)(b) is built on the same policy as section 39E, which restricts depreciation allowances on plant leased out and used outside Hong Kong. But section 39E does not itself reach intellectual property — it governs depreciation on machinery and plant. DIPN 49 invokes it only to explain the policy, not as a rule applying to IP.

Why a Licence Gets No Deduction, and What Happens on a Sale

The capital deduction under sections 16E and 16EA arises only on acquiring ownership; a lump sum paid for the right to use an asset for a period is not deductible. DIPN 49 states it directly: the claimant “must possess both the legal and economic ownership (or proprietary interest)… Deduction would only be applicable to an outright purchase of a patent right, right to know-how or an SIPR and not to an upfront fee paid for acquiring the right to use for a specified period.”

And then more sharply still: “any expenditure incurred on the acquisition of a ‘licence’ of a patent right, right to know-how or an SIPR is not deductible.”

A licence for these purposes is “a licence (however described and whether general or limited) authorizing the licensee to use the patent right, right to know-how or SIPR in the manner authorized by the licence”, but excludes an agreement under which ownership will or may pass to the licensee, unless the option to acquire would reasonably be expected not to be exercised.

What that carve-out means in practice. An arrangement structured as instalments with ownership passing at the end, where the parties reasonably expect the transfer to happen, is not a licence — and a deduction is therefore available. An arrangement where the option exists only formally and is not expected to be exercised remains a licence. The line is drawn by the parties’ economic expectation, not by the label on the document.

A qualification without which the picture is incomplete. The absence of a capital deduction for a licence does not mean licence payments are never deductible. Royalties and periodic licence fees of a revenue character are deductible on ordinary principles under section 16(1) as expenses incurred in producing chargeable profits. The problem is confined to the capitalised lump sum for a right to use — which passes neither as a capital deduction under sections 16E and 16EA nor as revenue expenditure under section 17(1)(c).

What happens on a sale of a specified right — section 16EB. DIPN 49:

“Section 16EB(2) provides that where an SIPR in respect of which a deduction has been allowed is sold: (a) if the unallowed amount of the SIPR exceeds the relevant proceeds of sale, the excess will be deducted for the year of assessment in the basis period for which the sale occurs; or (b) if the relevant proceeds of sale exceed the unallowed amount of the SIPR, or if there is not an unallowed amount, the excess or the relevant proceeds of sale, as the case may be, not otherwise chargeable to profits tax and not exceeding the amount of deduction previously allowed, will be treated as a trading receipt arising in or derived from Hong Kong.”

“Relevant proceeds of sale” are measured by reference to the extent the right was used in producing chargeable profits: on full use, the whole proceeds; on partial use, the part proportionate to the deduction allowed.

Clawback mechanism	Assets	How it operates
Section 16E(3)	Patent rights, rights to know-how	Proceeds treated as a trading receipt
Section 16EB(2)	The six specified rights	Netted against the unallowed amount; the clawback is capped at the deduction previously allowed

The asymmetry between the two mechanisms is substantive and worth noticing. The section 16EB mechanism is more elaborate but more favourable: it gives a deduction where proceeds fall short of the unallowed amount, and it caps the clawback at the deduction previously given. The section 16E(3) mechanism is blunt: the proceeds are a trading receipt.

Invalidation, revocation or surrender of a right ends entitlement to the deduction from the date the event takes effect — DIPN 49. That is a separate trigger from sale, and it carries no netting.

The 2026 Consultation: What the Government Has Proposed for Sections 16E and 16EA

As at August 2026 the intellectual property capital-deduction regime is under review, and the Government confirmed as much in the 2026-27 Budget Speech. Paragraph 159 of the Financial Secretary’s speech reads: “We are consulting the trade on tax deduction arrangements for capital expenditure incurred for purchasing IP or the rights to use IP.” The last five words matter: they confirm that the consultation officially reaches payments for a right to use, not only outright purchases.

That is Level 1 confirmation that a consultation is running. The substance of the proposals, at the time of writing, is published only in professional-firm commentary and is not corroborated by a primary government document that could be checked. The distinction is drawn expressly below.

Element	What is proposed	Level of confirmation
That a consultation is running	The Government is consulting the trade on deductions for capital expenditure on purchasing IP	Level 1 — 2026-27 Budget Speech, paragraph 159
Relaxing the bar on purchases from associates (section 16EC(2))	A deduction would become available on acquisitions from group companies	Level 2 — Big Four commentary
A cap on purchases from a Hong Kong associate	Deduction limited to the lower of the seller’s allowable deduction plus qualifying R&D expenditure, and the acquisition cost incurred	Level 2
Deduction for payments for a right to use IP	That the consultation reaches “the rights to use IP” is Level 1; the mechanics of even spreading over the licence term are Level 2	Mixed
Independent valuation threshold	The originally proposed HK$3,000,000 threshold dropped; a threshold to be set in Inland Revenue Department guidance; third-party valuation required only for cross-border transfers	Level 2
Section 16EC(4)(b) — use outside Hong Kong	No change proposed	Level 2
Application date	Acquisitions made on or after 1 April 2026	Level 2
Legislative timetable	An Amendment Bill to be introduced into the Legislative Council within 2026	Level 2 — though that amendments are being prepared follows from the Budget Speech

A sourcing caveat the standards applied here require to be stated openly. Every row marked Level 2 comes from commentary by international accounting and law firms. The government consultation paper and the Legislative Council brief could not be located in open access. That means the Level 2 parameters — including the 1 April 2026 date and the mechanics of the cap — are not confirmed by a primary source and should not be relied on to structure a transaction. The subject matter of the consultation, including its reach to payments for a right to use, is confirmed by the Budget Speech.

Author’s assessment: if the section 16EC(2) relaxation is enacted as described, it is the most significant change to the regime since 2011. The unconditional bar on deductions for purchases from associates closes off an entire class of transaction — consolidating an intellectual property portfolio into Hong Kong within a group. What that means for planning today: an acquisition of rights from a related company completed before the change takes effect gives no deduction and will not acquire one retrospectively. Where the transaction is not urgent, its economics are worth recalculating once the Bill is published.

The second proposal — on upfront licence fees — would close the gap described in the previous section.Today a capitalised payment for a right to use attracts neither a capital nor a revenue deduction. Spreading it over the licence term would align tax with accounting amortisation and remove the mismatch. Until the legislation passes, the existing rule stands.

Separately from the deduction consultation, the patent box regime is already in force, introduced by the Inland Revenue (Amendment) (Tax Concessions for Intellectual Property Income) Ordinance 2024 (Ord. No. 17 of 2024, gazetted 5 July 2024). It reduces the profits tax rate to 5% on income from eligible intellectual property and applies to years of assessment beginning on or after 1 April 2023.

Patent box element	Position
Rate	5% against the ordinary 16.5%
Eligible IP	Patents and patent applications; plant variety rights and applications; copyright subsisting in software — all generated from R&D activity
Where it sits	Schedule 17FD to Cap. 112
Nexus formula	F = (EE × 130%) / (EE + NE), capped at 100%; concessionary profits = assessable profits × F
EE	R&D by the person itself or by non-a­sso­ciated persons; and by associated Hong Kong residents carrying on the R&D in Hong Kong
NE	IP acquisition costs; R&D by associated non-residents
Local registration requirement	For patents and plant variety rights filed on or after 5 July 2026, a corresponding Hong Kong registration is required
Election	In writing, irre­voca­ble, applying to the year of filing and every subsequent year

> A distinction worth drawing expressly, because the two regimes pull in opposite directions. The cost of acquiring intellectual property — the very expenditure that attracts relief under sections 16E and 16EA — enters the nexus formula as NE and reduces the share of profit taxed at 5%. Self-development, by contrast, feeds EE and raises that share. The practical consequence: buying rights improves the deduction position and worsens the patent box position, while developing them in-house does the reverse. No provision governing the interaction of the two regimes could be found in open sources; Schedule 17FD should be checked against the enactment itself.

Environmental Facilities: Sections 16H–16L and Schedule 17

The deduction for capital expenditure on environmental facilities is granted by section 16I of Cap. 112, with the list of qualifying assets carried in Schedule 17, which has three Parts. The definitions sit in section 16H, the clawback on sale in section 16J, and the transitional rules in sections 16K and 16L.

All three categories of environmental facility are governed by the single section 16I; what separates them is which Part of Schedule 17 lists them.

Category	Where listed	Deduction rate
Envi­ronme­ntal protection machinery	Part 1 of Schedule 17	100% in the year incurred — section 16I(2), from the year of assessment 2008/09
Envi­ronme­ntal protection insta­lla­tion	Part 2 of Schedule 17	100% in the year incurred — section 16I(3B), from the year of assessment 2018/19; previously five equal instalments under section 16I(3)
Envi­ronme­nt-friendly vehicle	Part 3 of Schedule 17	100% in the year incurred — section 16I(2), from the year of assessment 2010/11

The section 16H definitions, as reproduced in DIPN 5:

•          “environmental protection facility” — “any environmental protection machinery, environmental protection installation or environment-friendly vehicle”.

•          “environmental protection machinery” — “any machinery or plant that is specified in Part 1 of Schedule 17 to the Ordinance, but does not include any machinery or plant in which a person holds rights as a lessee under a lease”.

•          “environmental protection installation” — “any installation, or part of any installation, that is specified in Part 2 of Schedule 17 and forms a building or structure”.

•          “environment-friendly vehicle” — “any vehicle that is specified in Part 3 of Schedule 17”, with the same exclusion for leased assets.

•          “specified capital expenditure” — capital expenditure on providing environmental protection machinery or an environment-friendly vehicle, or on constructing an environmental protection installation, excluding “any capital expenditure that may be deducted under any other section of Part 4 of the Ordinance” and “any capital expenditure incurred under a hire-purchase agreement”.

Part 1 of Schedule 17 covers four categories of machinery and plant: low-noise construction machinery registered under the Quality Powered Mechanical Equipment system; air pollution control plant complying with the Air Pollution Control Ordinance; waste treatment plant complying with the Waste Disposal Ordinance; and wastewater treatment plant complying with the Water Pollution Control Ordinance.

Examples of qualifying equipment given by the Government in its reply to the Legislative Council of 2 March 2016: electrostatic precipitators, flue gas desulphurisation plant, dust collection installations, gas scrubbers, wheel washing facilities on construction sites, grease trap filters, hydrovents and vapour recovery systems; pH control plant, heavy metal removal plant, cyanide removal plant, oil separation plant, bioreactors and organic solvent recovery plant; domestic and industrial wastewater treatment plants. In the same reply the Government states plainly: “It is not possible to produce an exhaustive list in view of the wide range machinery and plant, and the emergence of new products in the market in tandem with technological advancement.”

Part 2 of Schedule 17 covers renewable energy installations and energy efficient building installations. The first group runs to solar water heating and photovoltaic installations, wind turbines and offshore wind farms, and installations using landfill gas, anaerobic digestion, thermal waste treatment, wave power, hydroelectricity, bio-fuel, biomass combined heat and power, and geothermal energy. The second group is energy efficient building installations registered under the Hong Kong Energy Efficiency Registration Scheme for Buildings.

The HKEERSB, administered by the Electrical and Mechanical Services Department, covers four categories of building services installation: lighting, air conditioning, electrical, and lift and escalator installations. It is a voluntary scheme recognising buildings that outperform the requirements of the Buildings Energy Efficiency Ordinance.

Part 3 of Schedule 17 covers three classes of vehicle: vehicles qualifying for first registration tax remission under Environmental Protection Department schemes; hybrid vehicles; and electric vehicles. The first class requires an Environmental Protection Department certificate, to be obtained from the vehicle supplier; hybrid and electric vehicles need no Departmental verification.

> Author’s assessment: the coupling of a tax provision to an industry register is the decisive feature here, and it is routinely overlooked. Whether an installation qualifies is settled not by how the equipment is described in the contract but by whether it is registered under the HKEERSB or the QPME system. The practical consequence is that eligibility for the 100% deduction is determined at the design and certification stage, not when the return is prepared. A company that never entered its installation into the registration scheme gets no section 16I deduction, however energy-efficient the equipment actually is.

The Move from Five Years to One, and the Clawback on Sale

From the year of assessment 2018/19, capital expenditure on an environmental protection installation is deducted in full in the year it is incurred rather than in five equal instalments. The change was made by the Inland Revenue (Amendment) (No. 9) Ordinance 2018 (Ord. No. 32 of 2018, gazetted 23 November 2018), originating in the Inland Revenue (Amendment) (No. 5) Bill 2018, gazetted 8 June 2018.

The drafting technique matters, and without it the conclusion comes out wrong. The Bill did not repeal the old rule; it time-limited it, inserting into section 16I(3) the words “If that year of assessment commences on or before 1 April 2017”, and it added two new subsections. The explanatory memorandum to clause 14 reads: it “amends section 16I of the Ordinance to add — (a) a new section 16I(3A) to allow any part of a specified capital expenditure incurred in relation to an environmental protection installation that remains to be deducted for any year of assessment commencing on or after 1 April 2018 under section 16I(3)(b) to be deducted in the year of assessment commencing on 1 April 2018; and (b) a new section 16I(3B)…”.

What section 16I(3A) means for anyone mid-way through the five-instalment cycle — and it reverses the intuitive answer. The unallowed balance on an installation being written down at 20% a year was carried into the year of assessment 2018/19 automatically, not on a claim — provided the installation had not been sold. DIPN 5, paragraph 46: “Section 16I(3A) allows any part of expenditure that remains to be deducted for the year of assessment 2018/19 to be fully deducted in that year.” A company that did nothing therefore did not run out the five-year schedule: the balance was written off in 2018/19 by force of the statute.

Section 16L addresses a different problem, and it must not be conflated with section 16I(3A). Headed “Environmental protection installations owned before 1 April 2018”, it is aimed at assets on which no Part 4 deduction had previously been allowed at all — those written down as buildings and structures in the Part 6 depreciation-allowance system. DIPN 5, paragraph 62, states the condition: “no deduction has previously been allowed under Part 4 of the Ordinance for the expenditure”, and paragraph 63 measures the amount as “the residue of expenditure under Part 6 of the Ordinance”. Such a person may elect to treat the balance as incurred on 1 April 2018.

The section 16L election is time-limited and irrevocable. The Ordinance itself: “An election may only be made within 1 month after a notice of assessment for the year of assessment is given to the person under section 62”, and once made it cannot be withdrawn. The practical consequence: the window closed in 2019 and is now of historical interest — but it is worth knowing when reading the tax history of an acquired company that carries a pre-2018 installation on its balance sheet.

Deductions for energy efficient building installations are claimed through a dedicated form: Supplementary Form S4, “Expenditure on energy efficient building installation”.

The clawback sits in section 16J. Proceeds of sale of an environmental facility, “not otherwise chargeable to profits tax and not exceeding the amount of deduction previously allowed”, are treated as a trading receipt. On cessation of business an unsold asset is deemed sold immediately before cessation at open market value. For vehicles, DIPN 5 adds: “If the vehicle is sold, destroyed or stolen on or within 12 months after the cessation of business, the person may claim an adjustment to the amount deemed to have been received by him.”

The connected-party rule attaches to section 16J, not section 16K. Per DIPN 5, where an environmental facility is sold and the seller controls the buyer or vice versa, or both are under common control, or the buyer and seller are husband and wife, the Commissioner may determine the true market value of the facility if he considers the sale price does not reflect it.

The interaction with depreciation allowances is exclusionary. DIPN 5: “specified capital expenditure deducted will not qualify for depreciation allowances under Part 6 of the Ordinance.” But it operates as a choice, not an automatic bar:the Department’s guidance on environment-friendly vehicles states that a taxpayer may instead claim a 60% initial allowance and 30% annual allowances on the reducing value, and “In such a case, the 100% deduction will not be allowed”.

Situation	Provision	Consequence
The asset is leased in or leased out	Section 16H definitions	No deduction
The asset is acquired under a hire-purchase agreement	Definition of “specified capital expenditure”	No deduction
The expenditure is deductible under another Part 4 provision	Definition of “specified capital expenditure”	No section 16I deduction
The asset is used only partly in producing chargeable profits	Section 16I(4)	Appo­rtio­nment
The asset is sold	Section 16J	Proceeds treated as a trading receipt up to the deduction previously allowed
The asset is used outside Hong Kong	—	No such prohibition exists in sections 16H–16L

The last row needs stating separately, because the analogy is tempting and wrong. In the intellectual property regime, section 16EC(4)(b) expressly denies the deduction where the right is used principally outside Hong Kong. In the environmental regime there is no comparable prohibition, either in sections 16H–16L or in DIPN 5. Section 39E, which restricts depreciation allowances on plant used offshore, belongs to the depreciation system and not to the section 16I deduction.

> Author’s assessment: the environmental deduction is the simplest of the three regimes to administer and the narrowest in reach. It requires no assessment of scientific uncertainty, no test of connection between parties and no staff apportionment — it is enough that the asset appears in Schedule 17, is owned rather than leased, and is used in producing chargeable profits. But the reach is bounded by the list, and the list is tied to industry registers. Equipment that never entered a registration scheme stays in the ordinary depreciation-allowance system.

The Three Regimes Compared, and a Step-by-Step Route

The three capital-deduction regimes differ less in rate than in what they fund and in the conditions on which the deduction disappears entirely.

Feature	R&D — section 16B and Schedule 45	I­ntelle­ctual property — sections 16E and 16EA	Envi­ronme­ntal facilities — section 16I
Maximum rate	300% on the first HK$2,000,000; 200% above	100%	100%
Recognition period	Year the expenditure is incurred	s. 16E — one year; s. 16EA — five equal instalments	One year
What is funded	Creating an intangible in-house or through a DLRI	Acquiring a finished right from a third party	Acquiring equipment, installations and vehicles
Territorial condition	Activity wholly in Hong Kong — otherwise Type A	Denied where a licensee uses the right principally offshore — s. 16EC(4)(b)	No territorial condition
Associate restriction	Section 14(a)(ii) — R&D undertaken for another enterprise	s. 16EC(2) — unconditional bar on purchases from an associate	Only price substitution on sale — s. 16J
Rights in the output	Must be fully vested in the enterprise — s. 14(a)(i)	Ownership required, not a licence	Ownership required, not a lease
Leased asset	—	—	No deduction
Clawback on disposal	Sections 16 and 17 of Schedule 45	s. 16E(3); s. 16EB(2) capped at the deduction allowed	s. 16J capped at the deduction allowed
Filing form	Su­ppleme­ntary Form S3	Within the return	Su­ppleme­ntary Form S4 for energy efficient installations
De­precia­tion interaction	R&D plant gets 100%, no enhancement	—	Excludes Part 6; the taxpayer chooses

A step-by-step route for a company planning to claim.

1.        Establish what you are funding: creation, acquisition or equipment. That settles the regime, and the regimes do not overlap: section 6(2) of Schedule 45 excludes the acquisition of rights from R&D expenditure, and the section 16H definition of “specified capital expenditure” excludes anything deductible under another Part 4 provision.

2.        For R&D, test the activity against section 2(a), (c) or (d) of Schedule 45 rather than section 2(b). Feasibility studies and market research never reach the enhancement.

3.        Confirm the activity is wholly carried on in Hong Kong. On a cross-border project, record in the project documentation which activities are performed where — that record is the basis for splitting Type B from Type A.

4.        Test the contractual structure against section 14 of Schedule 45. The Hong Kong company must be principal rather than contractor, and the rights in the output must be fully vested in it.

5.        Where R&D is outsourced, check the contractor’s DLRI status before paying. If there is no entry, ask whether an application is pending: the six-month rule runs from the date of payment.

6.        Introduce project-level time recording from day one. Apportionment of staff costs is mandatory and cannot be reconstructed afterwards.

7.        Check whether the cost is met by a subsidy or grant. Section 14(b) removes the corresponding portion.

8.        For an IP acquisition, test connection between the parties before structuring the deal. Section 16EC(2) bars the deduction on a purchase from an associate unconditionally.

9.        Confirm that ownership is being acquired, not a licence. A lump sum for a right to use is not deductible.

10.    Confirm that no licensee will use the right principally outside Hong Kong. Section 16EC(4)(b) removes the deduction entirely.

11.    Allocate the purchase price across a portfolio deliberately. Patents and know-how deduct in year one; the six specified rights deduct over five.

12.    Confirm the registration was in force during the relevant basis period, where registration is required.

13.    For environmental assets, confirm the item appears in the relevant Part of Schedule 17 before ordering the equipment.

14.    For energy efficient building installations, secure HKEERSB registration. Without it the section 16I deduction is unavailable.

15.    For vehicles under Environmental Protection Department schemes, obtain the certificate from the supplier.Hybrid and electric vehicles need none.

16.    Confirm the asset is bought outright rather than leased or taken on hire-purchase.

17.    Choose deliberately between the section 16I deduction and depreciation allowances. They are not available together.

18.    File Supplementary Form S3 for R&D and Supplementary Form S4 for energy efficient installations with the return.

19.    Model the exit: section 17 of Schedule 45 on a sale of R&D-generated rights; section 15(1)(bc) on licensing them offshore; section 16EB(2) on a sale of specified rights; section 16J on a sale of an environmental asset.

20.    If an acquisition of rights from a group company is contemplated, check the status of the 2026 Bill before fixing the timing of the deal.

Where the exit is planned through a sale of the holding company rather than the rights, stamp duty on the share transfer has to be modelled separately — the computation and deadlines are set out in Stamp Duty on Share Transfers in Hong Kong 2026. The collective investment structures through which intellectual property portfolios are often held are analysed in Hong Kong Fund Structures in 2026.

Common Mistakes and What They Cost

Mistake 1. Applying the enhancement to the whole cost of an R&D project. Section 12(1) of Schedule 45 admits only directly engaged staff costs and consumed materials into Type B. Rent, third-party software licences, cloud infrastructure and equipment do not qualify. Cost: a gap between budgeted and actual saving that, on a typical development cost stack, is a multiple rather than a margin — and one discovered when Form S3 is prepared, by which time the budget is spent.

Mistake 2. Performing the development under a cost-plus contract with the parent. That structure breaches sections 14(a)(i) and 14(a)(ii) of Schedule 45 simultaneously: the rights are not vested in the enterprise and the activity is undertaken for another person. Cost: total loss of the enhancement rather than a reduction. On HK$5,000,000 of annual spend, the difference between the 300%/200% rate and the ordinary deduction is HK$1,155,000 of tax every year.

Mistake 3. Not keeping project-level time records. Apportionment of staff costs is mandatory wherever an employee is only partly engaged in qualifying activity. Cost: the whole claimed amount falls away for want of evidence. An employee’s share of qualifying work cannot be reconstructed two years after the spend.

Mistake 4. Acquiring intellectual property rights from a group company. Section 16EC(2) denies the deduction unconditionally, “irrespective of whether or not the price is at an arm’s-length”. Cost: total loss of relief on the entire acquisition price. On a HK$30,000,000 portfolio purchase that is HK$4,950,000 of tax saving that never happens.

Mistake 5. Capitalising an upfront licence fee in the expectation of a deduction. DIPN 49: expenditure on acquiring a licence is not deductible. Cost: the payment attracts neither a capital deduction under sections 16E and 16EA nor a revenue deduction under section 17(1)(c) — it is not deductible at all.

Mistake 6. Claiming under section 16EA on a right whose registration was not in force in the basis period. The registration requirement applies to patents, plant variety rights, registered designs and registered trade marks. Cost: the deduction is refused for the year; on invalidation or revocation, entitlement ends from the date the event takes effect.

Mistake 7. Citing section 16B without a Schedule 45 section number. Every condition, rate, prohibition and clawback rule lives in Schedule 45. Cost: a position that cannot be checked and does not survive enquiry — together with the risk of relying on a proposition section 16B does not contain.

Mistake 8. Buying environmental equipment without first checking Schedule 17. Eligibility is settled by the list and by the industry registers, QPME and HKEERSB. Cost: the asset stays in the ordinary depreciation-allowance system, and instead of 100% in year one the write-off stretches out at 30% of reducing value.

Mistake 9. Leasing the environmental asset. The section 16H definitions expressly exclude machinery and vehicles in which a person holds rights as lessee, and “specified capital expenditure” excludes hire-purchase agreements. Cost: no deduction at all, on an asset used identically in economic terms.

Mistake 10. Assuming the two-tiered rate threshold and the enhancement threshold work the same way. For the two-tiered rates the connected-entity restriction is express — the benefit is available to one nominated enterprise in the group only. For the HK$2,000,000 tier in the enhancement, no aggregation rule could be found in open sources. The error costs in both directions: either an unnecessary decision not to claim across several group companies, or a claim that does not hold. The point is closed by an enquiry to the Inland Revenue Department.

Mistake 11. Planning to migrate the intellectual property offshore after taking the enhancement. Section 15(1)(bc) charges sums received for the use outside Hong Kong of intellectual property generated from R&D activity on which a section 16B deduction was allowed. Cost: royalties modelled as offshore income turn out to be chargeable, and the project’s payback is recomputed after the fact.

Mistake 12. Citing section 16EA(2) as the apportionment provision. Apportionment sits in sections 16E(2) and 16EA(7). Cost: a citation to a non-existent basis in correspondence with the Inland Revenue Department undermines the whole position, even where the computation is right on the merits.

Who These Regimes Suit, Who They Do Not, and When to Take Advice

The R&D enhancement suits a company that carries out development in Hong Kong itself or through a designated local research institution, owns the output and bears the risk of failure. The sections 16E and 16EA deductions suit a buyer of intellectual property rights from an unconnected seller. The section 16I deduction suits an operator of a plant or commercial property acquiring Schedule 17 equipment outright.

These regimes suit:

•          companies with a research or engineering team in Hong Kong — the enhancement returns up to 49.5% of the actual salary cost of directly engaged staff;

•          companies without a laboratory of their own that are willing to place work with an institution on the DLRI register — the same rate, with simpler administration;

•          buyers of patents, know-how and intellectual property rights from unconnected sellers — section 16E delivers a full deduction in year one;

•          manufacturing and warehousing operators installing pollution-control or energy-efficient equipment — provided the asset is registered under the relevant industry scheme;

•          companies planning to hold the resulting asset in Hong Kong for the long term — the regime is built on the premise that income from the asset stays in the Hong Kong base.

They do not suit:

•          companies performing development under a contract with their parent — section 14 of Schedule 45 removes the enhancement entirely;

•          groups consolidating an intellectual property portfolio through internal transfers — section 16EC(2) bars the deduction unconditionally, until the 2026 changes are enacted;

•          licensees paying a lump sum for a right to use — no capital deduction arises;

•          owners licensing rights for principal use outside Hong Kong — section 16EC(4)(b) removes the deduction;

•          lessees of equipment — the environmental deduction requires ownership;

•          companies with no assessable profits expecting a cash return — all three regimes give a deduction, not a credit.

Professional review is warranted in at least five situations: a cross-border R&D project requiring activity to be split between Hong Kong and offshore; the design of the group’s contractual architecture, where it is decided who is principal in the development; the acquisition of an intellectual property portfolio, where the price allocation determines the write-off period; planning an exit from an R&D asset by selling the rights or licensing them offshore; and the choice between a section 16I deduction and depreciation allowances on a major asset.

Frequently Asked Questions

How much is the R&D deduction in Hong Kong?

Type B expenditure is deducted at 300% on the first HK$2,000,000 for the basis period of a year of assessment and at 200% above that. Type A expenditure is deducted at 100%. There is no ceiling on the enhancement — DIPN 55: “There is no cap on the amount of enhanced tax deduction.”

Can the 300% rate be claimed if development is carried out outside Hong Kong?

No. Section 4(1)(b) of Schedule 45 requires a qualifying R&D activity to be “wholly undertaken and carried on in Hong Kong”. Spending on offshore development falls into Type A and is deducted at 100%. The test applies to the individual activity rather than the project as a whole, so the Hong Kong components of a cross-border project can still attract the enhancement.

Which costs actually fall into Type B?

Only two categories under section 12(1) of Schedule 45: expenditure on employees directly and actively engaged in a qualifying R&D activity, and expenditure on consumable items used directly in that activity — plus payments to designated local research institutions under section 10. Directors’ remuneration is excluded by section 12(5)(b); plant and machinery attract the ordinary 100%; land and buildings are excluded outright by section 6(1)(c).

What is a designated local research institution and why does it matter?

It is a body in Hong Kong designated by the Commissioner for Innovation and Technology under section 19 of Schedule 45. A payment to such a body for a qualifying R&D activity is Type B and attracts 300%/200% even for a company with no laboratory of its own. Hong Kong universities and colleges are R&D institutions by definition and need no designation. The register is maintained by the Innovation and Technology Commission; the version current at the time of writing is dated July 2026.

Can the cost of a purchased patent be deducted?

Yes, in full for the year of assessment in whose basis period the expenditure is incurred — section 16E(1). The deduction covers the purchase price together with legal expenses and valuation fees incurred in connection with the purchase — section 16E(1A). But there is no deduction if the patent is bought from an associate: section 16EC(2) denies it unconditionally.

Which intellectual property rights are written off over five years rather than one?

The six rights named in section 16EA(11): copyright, performer’s economic right, protected layout-design (topography) right, protected plant variety right, registered design and registered trade mark. The deduction is given in five equal amounts over five consecutive years of assessment under section 16EA(3). Patent rights and rights to know-how are deducted in full in one year under section 16E.

Is a licence fee for the right to use intellectual property deductible?

A capitalised lump sum for a right to use is not deductible under sections 16E or 16EA. DIPN 49: “any expenditure incurred on the acquisition of a ‘licence’ of a patent right, right to know-how or an SIPR is not deductible.” Periodic royalties of a revenue character remain deductible on ordinary principles under section 16(1). The Government is consulting during 2026 on introducing a deduction for upfront licence fees, spread over the licence term.

What is the Hong Kong profits tax rate in 2026?

For corporations, 8.25% on the first HK$2,000,000 of assessable profits and 16.5% on the balance; for unincorporated businesses, 7.5% and 15%. The two-tiered rates have applied since the year of assessment 2018/19 and have not changed. A one-off 100% reduction, capped at HK$3,000 per case, applies for the year of assessment 2025/26.

Over how many years are environmental installations written off?

Since the year of assessment 2018/19, over one year — in full in the year the expenditure is incurred, under section 16I(3B). Five equal instalments under section 16I(3) applied previously. For installations owned before 1 April 2018, section 16L allowed an irrevocable election to write the balance off in full in the year of assessment 2018/19.

What equipment counts as environmental for the deduction?

Only what is named in the relevant Part of Schedule 17 to Cap. 112. Part 1 covers environmental protection machinery, including QPME-registered low-noise construction plant and air pollution control, waste treatment and wastewater treatment plant. Part 2 covers renewable energy installations and energy efficient building installations registered under the HKEERSB. Part 3 covers environment-friendly vehicles. Equipment held under a lease or acquired on hire-purchase is outside the regime.

Can a section 16I deduction and depreciation allowances be claimed together?

No. DIPN 5: “specified capital expenditure deducted will not qualify for depreciation allowances under Part 6 of the Ordinance.” But it operates as the taxpayer’s choice rather than an automatic bar: on the Department’s guidance, a 60% initial allowance and 30% annual allowances on the reducing value can be claimed instead of the 100% deduction.

Is the intellectual property deduction regime changing in 2026?

The Government confirmed in the 2026-27 Budget Speech that it is consulting the trade on deductions for capital expenditure on purchasing intellectual property. Paragraph 159 of the Financial Secretary’s speech: “We are consulting the trade on tax deduction arrangements for capital expenditure incurred for purchasing IP.” The substance of the proposals — relaxing the bar on purchases from associates and introducing a deduction for upfront licence fees — is, as at August 2026, published only in professional-firm commentary and is not corroborated by a primary government document.

Key Takeaways

•          The three capital-deduction regimes do not overlap: creation runs through section 16B, acquisition of rights through sections 16E and 16EA, and equipment through section 16I. The boundary is drawn by section 6(2) of Schedule 45 and by the section 16H definition of “specified capital expenditure”.

•          The enhancement is 300% on the first HK$2,000,000 and 200% above it, with no ceiling, returning up to 49.5% of actual cost at the 16.5% rate.

•          Type B is available only for activity wholly carried on in Hong Kong, and only for two categories of cost — staff and consumables.

•          Section 14 of Schedule 45 removes the enhancement entirely where the rights are not vested in the enterprise or the development is undertaken for another person.

•          The designated local research institution route delivers the same 300%/200% rate without an in-house laboratory.

•          Section 16E gives 100% in one year for patents and know-how; section 16EA gives five equal instalments for the six specified rights.

•          Section 16EC(2) bars the deduction on a purchase from an associate unconditionally, whatever the price.

•          A lump sum paid for a licence attracts no capital deduction at all.

•          Environmental installations are written off in one year from the year of assessment 2018/19; eligibility is settled by Schedule 17 and by registration under the QPME and HKEERSB schemes.

•          Leased environmental assets and hire-purchase acquisitions are outside the regime.

•          Section 15(1)(bc) charges income from the offshore use of intellectual property generated from R&D on which a section 16B deduction was allowed.

•          No instrument enacted between 2019 and 2026 has amended these sections; the intellectual property deduction regime is under consultation, with change expected during 2026.

Summary

Hong Kong provides three separate capital-deduction mechanisms under profits tax, all located in Part 4 of the Inland Revenue Ordinance (Cap. 112) as exceptions to the section 17(1)(c) prohibition on deducting capital expenditure. The enhanced deduction for research and development is granted by section 16B and Schedule 45, introduced by the Inland Revenue (Amendment) (No. 7) Ordinance 2018 (Ord. No. 29 of 2018, gazetted and enacted 2 November 2018) and applying to expenditure incurred on or after 1 April 2018: Type A expenditure is deducted at 100% while Type B expenditure attracts 300% on the first HK$2,000,000 for the basis period of a year of assessment and 200% above that, with no ceiling, which at the 16.5% rate returns up to 49.5% of the cash actually spent. Type B comprises payments to a designated local research institution for a qualifying R&D activity together with qualifying expenditure under section 12(1) of Schedule 45 — the cost of employees directly and actively engaged in that activity and of consumable items — while directors’ remuneration is excluded by section 12(5)(b), plant and machinery attract only the ordinary 100%, and land and buildings are excluded by section 6(1)(c). A qualifying R&D activity is defined by section 4(1) as an activity within section 2(a), (c) or (d) that is wholly undertaken and carried on in Hong Kong, which excludes feasibility studies and market research under section 2(b) and under section 4(2). Section 14 of Schedule 45 removes the deduction altogether where rights in the output are not fully vested in the enterprise or the development is undertaken for another enterprise, while sections 16 and 17 and section 15(1)(bc) return the benefit to the tax base on a sale of the rights and on their use outside Hong Kong. Capital expenditure on acquiring intellectual property rights is deducted under section 16E — patent rights and rights to know-how in full in the year incurred — and under section 16EA in five equal instalments over five years for the six rights named in section 16EA(11): copyright, performer’s economic right, protected layout-design (topography) right, protected plant variety right, registered design and registered trade mark, of which the last three were added by the Inland Revenue (Amendment) (No. 5) Ordinance 2018 (Ord. No. 24 of 2018, gazetted 29 June 2018) from the year of assessment 2018/19, sections 16EA to 16EC themselves having been introduced by the Inland Revenue (Amendment) (No. 3) Ordinance 2011 (Ord. No. 21 of 2011, gazetted 16 December 2011). Section 16EC denies the deduction in five circumstances, of which the two that matter in practice are subsection (2) — a purchase from an associate, unconditionally and irrespective of arm’s-length pricing — and subsection (4)(b) — the right being used wholly or principally outside Hong Kong by a person other than the owner; a lump sum paid for a licence attracts no capital deduction at all, and clawback on disposal is governed by sections 16E(3) and 16EB(2). The deduction for environmental facilities is granted by section 16I against the lists in the three Parts of Schedule 17 — environmental protection machinery in Part 1, environmental protection installations in Part 2 and environment-friendly vehicles in Part 3 — at 100% in the year the expenditure is incurred, single-year treatment for installations having been introduced by the Inland Revenue (Amendment) (No. 9) Ordinance 2018 (Ord. No. 32 of 2018, gazetted 23 November 2018) from the year of assessment 2018/19 in place of five equal instalments, with section 16L permitting an irrevocable election to write off the balance on pre-1 April 2018 assets in 2018/19; eligibility for installations is tied to registration under the QPME system and the Hong Kong Energy Efficiency Registration Scheme for Buildings, leased assets and hire-purchase acquisitions are excluded, and a section 16I deduction displaces Part 6 depreciation allowances although the taxpayer may instead elect a 60% initial allowance and 30% annual allowances. Profits tax rates in 2026 are 8.25% on the first HK$2,000,000 and 16.5% above for corporations and 7.5% and 15% for unincorporated businesses, with a one-off 100% reduction capped at HK$3,000 per case for the year of assessment 2025/26; running alongside is the patent box in Schedule 17FD at a 5% rate from the year of assessment 2023/24, introduced by Ord. No. 17 of 2024 of 5 July 2024, in whose nexus formula intellectual property acquisition costs count as NE and reduce the share of profit taxed at the concessionary rate. No instrument enacted between 2019 and 2026 has amended sections 16B, 16E, 16EA, 16EB, 16EC or 16G–16L, and the Government confirmed in the 2026-27 Budget Speech that it is consulting the trade on deductions for capital expenditure on purchasing intellectual property.

Structuring an R&D programme, an intellectual property acquisition or a plant fit-out in Hong Kong? The UPPERSETUP team can help select a legal structure that keeps the deductions available; the mechanics of incorporating the company itself, the company secretary requirement and annual compliance are set out in Hong Kong Company Registration 2026.

Sources

Primary legislation and government instruments

1.        Cap. 112 Inland Revenue Ordinance — Hong Kong e-Legislation

2.        Inland Revenue Department — complete register of instruments amending the Inland Revenue Ordinance, with Ordinance numbers and gazettal dates

3.        Government of Hong Kong — gazettal of the Inland Revenue (Amendment) (No. 3) Bill 2018 on the enhanced R&D deduction, 20 April 2018

4.        Inland Revenue Department — enactment of the Inland Revenue (Amendment) (No. 7) Ordinance 2018, 2 November 2018

5.        Government of Hong Kong — the same release on enactment of the enhanced R&D deduction

6.        Government of Hong Kong — expansion of the intellectual property deduction categories, Inland Revenue (Amendment) (No. 5) Ordinance 2018, 29 June 2018

7.        Inland Revenue (Amendment) (No. 5) Bill 2018 — the environmental installations bill, Legislative Council 7a. Text of the Inland Revenue (Amendment) (No. 7) Ordinance 2018 with Schedule 45 as gazetted (PDF) 7b. Text of the Inland Revenue (Amendment) (No. 9) Ordinance 2018 with sections 16I(3A), 16I(3B) and 16L as gazetted (PDF)7c. Text of the Inland Revenue (Amendment) (Miscellaneous Provisions) Ordinance 2021, which amended the source-note in the Schedule 45 heading (PDF) 7d. Text of the Inland Revenue (Amendment) (Tax Concessions for Intellectual Property Income) Ordinance 2024 (PDF)

8.        Government of Hong Kong — release of 6 June 2018 announcing gazettal of the Inland Revenue (Amendment) (No. 5) Bill 2018 on 8 June 2018

9.        Government of Hong Kong — introduction of the two-tiered profits tax rates, 29 March 2018

10.    Inland Revenue Department — the Revenue Bill 2008 introducing Schedule 17 and the environmental deductions

11.    Government of Hong Kong — gazettal of the Inland Revenue (Amendment) (Tax Concessions for Intellectual Property Income) Ordinance 2024, 5 July 2024

12.    Inland Revenue Department — release on enactment of the patent box

13.    Government reply to the Legislative Council on the Schedule 17 list of environmental equipment, 2 March 2016

14.    Government reply to the Legislative Council, LCQ18, on take-up of the enhanced R&D deduction, 20 November 2019

Official Inland Revenue Department guidance

15.    Departmental Interpretation and Practice Notes No. 55, “Deduction for Research and Development Expenditure”, April 2019 (PDF)

16.    Departmental Interpretation and Practice Notes No. 49 (Revised), “Profits Tax: Deduction of Capital Expenditures on Patent Rights, Rights to Know-how and Specified Intellectual Property Rights”, July 2012, revised August 2020 (PDF)

17.    Departmental Interpretation and Practice Notes No. 5 (Revised) on capital expenditure deductions, including environmental facilities, April 2019 (PDF)

18.    Inland Revenue Department — index of all current DIPNs

Rates, forms and administration

19.    Inland Revenue Department — profits tax rates, including the two-tiered rates

20.    Inland Revenue Department — guidance on completing Supplementary Form S3, “Expenditure on research and development”

21.    Inland Revenue Department — guidance on completing Supplementary Form S4, “Expenditure on energy efficient building installation”

22.    Inland Revenue Department — designated and approved institutes under sections 16B and 16C

23.    Inland Revenue Department — the environment-friendly vehicles deduction

24.    Inland Revenue Department — FAQ on the environment-friendly vehicles deduction, including the choice between the deduction and depreciation allowances

25.    Inland Revenue Department — the patent box regime, the 5% rate and the nexus formula

26.    Inland Revenue Department — budget tax measures

Industry registers and competent authorities

27.    Innovation and Technology Commission — designated local research institutions, landing page

28.    Innovation and Technology Commission — the current DLRI lists, July 2026 version

29.    Electrical and Mechanical Services Department — Hong Kong Energy Efficiency Registration Scheme for Buildings

30.    Electrical and Mechanical Services Department — the scheme’s register of registered installations

31.    Environmental Protection Department — lists of environment-friendly vehicle models for the deduction

32.    Government of Hong Kong — environment-friendly vehicle standards for April 2025 to March 2026

33.    Government of Hong Kong — environment-friendly vehicle standards for April 2024 to March 2025

Budgets and the current legislative agenda

34.    2026-27 Budget Speech — the intellectual property section, paragraphs 158–164

35.    2026-27 Budget — full text of the Financial Secretary’s speech

36.    Government of Hong Kong — tax measures in the 2026-27 Budget, 25 February 2026

37.    Government of Hong Kong — the 2026 tax concessions bill, 4 March 2026

38.    2025-26 Budget Speech

39.    Government of Hong Kong — tax measures in the 2025-26 Budget

40.    Government of Hong Kong — tax measures in the 2024-25 Budget

41.    Inland Revenue Department — leased premises reinstatement deduction and allowances for buildings and structures, Ord. No. 34 of 2024

A note on sources and levels of confirmation. Hong Kong e-Legislation at elegislation.gov.hk is closed to automated access: every path on the domain is refused under its robots.txt rules, and a direct connection is blocked at network-policy level. The link is retained in the list as the canonical address of the consolidated text, but the content of Cap. 112 in this analysis is taken from the Inland Revenue Department’s own publications — DIPN 5, DIPN 49 and DIPN 55, which reproduce and interpret the provisions — together with the text of the Inland Revenue (Amendment) (No. 5) Bill 2018 read on the Legislative Council site, and government releases. The Ordinance numbers and gazettal dates for all eight instruments in the chain were read directly in the Inland Revenue Department’s official amendment register. A further route around the block was found: the Inland Revenue Department publishes the ordinances themselves under /eng/pdf/iro/gazette/, and sections 8, 12(4) and 13 of Schedule 45 as gazetted were read there, along with clause 14 of Ordinance No. 32 of 2018 inserting sections 16I(3A) and 16I(3B), and the text of section 16L with its one-month election deadline. The profits tax rates, the patent box, the nexus formula, the S3 and S4 filing guidance, the DLRI register and the environment-friendly vehicle lists were read directly on the relevant authorities’ own sites.

What could not be confirmed, and is therefore not asserted here. The verbatim consolidated text of section 16B was not checked against the enactment; the Schedule 45 provisions are given as gazetted and as DIPN 55 states them, not from the consolidated text, and later consolidating amendments to them were not traced. The formula in section 17 of Schedule 45, which determines the amount treated as a trading receipt on a sale of rights generated from R&D activity, is not reproduced in DIPN 55, and its exact terms are not stated here. No aggregation rule for the HK$2,000,000 tier across connected persons could be found in open sources; the conclusion that none exists is flagged in the text as the author’s assessment rather than as a provision. The substance of the 2026 consultation on intellectual property deductions is confirmed at Level 1 only as to the fact that it is running — by paragraph 159 of the 2026-27 Budget Speech; the parameters of the proposals come from professional-firm commentary and are marked in the text as Level 2. The absence of substantive amendments to these sections between 2019 and 2026 was established by exhaustive review of the Inland Revenue Department’s official amendment register, the texts of individual ordinances and the budget documents, not from the annotations under each section on the legislation portal; the three formal amendments to the source-note in the Schedule 45 heading are recorded separately in the text. Whether Schedule 17FD contains a provision governing the interaction of the patent box with the sections 16E and 16EA deductions could not be established.

On non-primary sources. This analysis does not rely on publications by local corporate-services or company-formation firms, offshore agencies, or “best Hong Kong tax incentives” round-ups. Commentary by international accounting and law firms has been used solely for cross-checking and to describe the 2026 consultation, and every such instance is marked in the text as Level 2.

Current as at August 2026.

Disclaimer. This material is informational and does not constitute legal, tax, financial, investment or consulting advice. Before acting, obtain individual professional advice addressed to the specific circumstances, jurisdiction, status of the company and the requirements regulators apply at the time.