6 MIN READ 
Hong Kong tax certainty scheme equity disposal gains rules give companies a clearer route when they sell long-held equity interests. Earlier, a business selling shares had to rely heavily on the old capital versus revenue analysis. That created uncertainty in M&A deals, holding company exits, and group disposals.
The scheme does not make every share sale tax-free. It only helps when the disposal is onshore, the equity interest qualifies, the investor qualifies, and the holding tests are met.
Hong Kong profits tax under Section 14 of the Inland Revenue Ordinance applies to assessable profits arising in or derived in Hong Kong through a trade, profession, or business. However, it excludes profits arising through the sale of capital assets. IRD also looks at facts such as motive, financing, operation mode, frequency, and holding period when deciding if a gain is trading or capital in nature.
That old test can be uncomfortable during a sale. A founder may say the shares were held as a long-term investment. The buyer may want comfort before signing. The auditor may ask for tax support. The IRD may still review the facts.
The tax certainty scheme reduces that uncertainty for qualifying onshore equity disposal capital nature Hong Kong gains.If the conditions are met and the taxpayer elects into the scheme the onshore disposal gain is treated as capital in nature. It is not chargeable to profits tax and the full badges of trade analysis does not need to be applied.
The scheme applies to disposals on or after 1 January 2024, where the gain accrues in the basis period for a year of assessment beginning on or after 1 April 2023. It is optional. If a taxpayer does not elect for the scheme, or if the gain is excluded, the usual badges of trade approach still applies.
The gain must also be onshore. IRD is clear that the scheme does not cover specified foreign-sourced income under the FSIE regime, even if that foreign income is treated as received in Hong Kong under section 15I.
For a Hong Kong M&A tax certainty review, this point is important. A deal involving a Hong Kong holding company may still need a source analysis before the scheme is considered.
| Area | What To Check | Practical Deal Impact |
| Investor Entity | The seller must be a legal person or an arrangement with separate financial accounts | Individuals are not the main target of the scheme |
| Investee Entity | The company or arrangement whose equity is sold must also qualify | Check the entity type before relying on the scheme |
| Equity Interest | The interest must carry rights to profits, capital, or reserves and be accounted for as equity | Ordinary shares, preference shares, and partnership interests may qualify |
| Holding Test | At least 15% equity must be held for a continuous 24 months before disposal | Keep share register and acquisition records ready |
| Group Measurement | Closely related entities can help meet the 15% holding test in some cases | Useful for group holding structures |
| Exclusions | Trading stock, insurers, and some non-listed property-related investees can be excluded | Check exclusions before giving tax comfort |
Many exits do not happen in one clean sale. A group may sell 16% first and keep 10% for the next buyer round. The scheme has a useful rule for long-held left-over interests.
If the earlier disposal met the equity holding conditions the later disposal gains on the remaining interests may still be treated as capital in nature. This can apply when the later disposal happens within 24 months after the earlier qualifying disposal.
This helps in staged M&A exits, but it should be planned carefully. If the first sale happened before the scheme’s effective date, or if the earlier sale did not meet the conditions, the later left-over sale may not receive the same treatment.
The scheme is helpful, but not wide open. It does not apply to onshore gains through equity disposals by insurers. It also does not apply to equity interests treated as trading stock for tax purposes. IRD explains that trading stock is not a capital asset, so trading gains remain taxable.
Non-listed equity interests in certain property-related investee entities can also be excluded. This covers investee entities engaged in property trading, property development, or property holding unless the relevant exception conditions are met. Listed equity interests in property-related entities are not excluded in the same way.
A company selling shares in a private property holding vehicle should therefore slow down and check the exclusion rules before assuming the scheme applies.
The election is handled through the profits tax return process. IRD’s BIR51 notes state that a taxpayer wishing to elect for the scheme under Schedule 17K should complete and submit Supplementary Form S21.
Form S21 asks for details of onshore disposal gains covered by the election. Its notes state that the scheme applies only where the disposal occurs on or after 1 January 2024 and the gain accrues in the relevant basis period. The notes also confirm that the disposal gain must arise in or be derived in Hong Kong.
Finance teams should not treat this as a last-page tax return item. The form needs deal details, holding evidence, entity checks, and exclusion checks.
Tax certainty works best when deal documents, ownership records, holding periods, source analysis, and tax return elections are reviewed together. Arnifi’s expert team helps Hong Kong companies prepare cleaner disposal files, check scheme eligibility, and avoid weak assumptions before equity sale gains are reported.
It is an optional scheme that treats qualifying onshore gains on disposal of eligible equity interests as capital in nature and not chargeable to profits tax.
The investor must generally hold at least 15% equity interests for a continuous 24 months immediately before the disposal.
No. IRD says foreign-sourced disposal gains are not covered by this scheme and are reviewed under the FSIE regime instead.
A taxpayer electing for the scheme should complete and submit Supplementary Form S21 with the profits tax return.
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