For most Hong Kong SMEs, the two-tier profits tax regime is the single biggest tax saving available — and also one of the most misunderstood. The rule sounds simple: the first HKD 2 million of profits is taxed at a reduced rate, and everything above is taxed at the standard rate. In practice, the connected-entity rules, the nomination requirement, and a few edge cases around partnerships and sole proprietors catch a lot of businesses out.
This guide explains how the two-tier profits tax in Hong Kong actually works, how much you can really save, and how to avoid the single most common mistake that causes groups of companies to lose the benefit altogether.
How the two-tier regime works
Hong Kong’s two-tier profits tax regime came into effect from the year of assessment 2018/19 and is still in force in 2026. The rates depend on whether you operate as a corporation (limited company) or an unincorporated business (sole proprietor or partnership).
- Corporations: first HKD 2 million of assessable profits at 8.25%; remainder at 16.5%.
- Unincorporated businesses: first HKD 2 million of assessable profits at 7.5%; remainder at 15%.
If a limited company earns exactly HKD 2 million in a year, its tax bill is HKD 165,000 under the two-tier rate rather than HKD 330,000 under the flat 16.5% rate — a saving of HKD 165,000. This is why qualifying matters.
The connected-entity rule: the single biggest pitfall
Only one entity within a group of connected entities can benefit from the two-tier rate in any given year. This is not optional; it is the law, and it catches many HK founders off guard.
Two entities are “connected” if one controls the other, or both are controlled by the same person. “Control” is defined broadly and includes holding more than 50% of the shares, voting rights, or income. Connected entities can include:
- Parent companies and their subsidiaries. Any subsidiary owned more than 50%.
- Sister companies owned by the same individual or holding company.
- A limited company and a partnership that share a common controlling person or entity.
- Two sole proprietorships run by the same person counting as connected.
So if you incorporated three companies to split your operating business, your property holding, and your consultancy, only one of those three can enjoy the reduced rate in any given year — the other two will be taxed at the full 16.5% from the first dollar of profit. The choice is yours, but you must nominate which one.
How to elect: the nomination mechanism
Electing into the two-tier rate is done when filing the annual profits tax return (BIR51 for corporations, BIR52 for partnerships). The election is made on a year-by-year basis, meaning you can switch which entity gets the benefit each year to match which one has the highest expected taxable profits.
Practical steps your accountant will take:
- Identify every connected entity as at the end of the year of assessment. Include any dormant companies — they count.
- Project the taxable profit for each entity. Before-tax profit is not the same as taxable profit (add-backs for entertainment, depreciation, etc.).
- Nominate the entity with the highest expected profit up to HKD 2M. Beyond HKD 2M the rate equalises, so the saving is maximised by picking the entity that will use the full HKD 2M bracket.
- Tick the election box on the nominated entity’s BIR return and leave it unticked on the others.
- Document the reasoning. If the IRD ever queries the nomination, a simple file note saves a lot of explanation later.
There is no pre-approval required — the IRD sees your election when the returns arrive. But the onus is on you to get it right; claiming the rate on two connected entities in the same year will trigger a reassessment.
When the two-tier rate does NOT help
A few situations where electing in is either pointless or actively harmful:
- Group with losses. If the profitable entity is already below HKD 2M and the loss-making entity is connected, the loss-maker cannot benefit from the rate (no profit to tax). This is usually fine — nominate the profitable one.
- Entities already enjoying other tax concessions. Ship operators and certain fund managers have their own concessionary regimes. The two-tier rate cannot stack.
- Start-ups planning a quick sale or group reorganisation. Consider which entity the benefit is worth most to under your planned structure.
Common misunderstandings
“Every HK company gets 8.25% on the first HKD 2M.” No. Only one entity per group. A solo company with no connected entities gets it automatically by electing.
“The election carries over year to year.” No. It is made on each year’s return. You can (and sometimes should) nominate a different entity next year.
“Dormant companies don’t count.” They do. A dormant HK company owned by the same shareholders is still a connected entity.
“The rate applies to revenue under HKD 2M.” No — it applies to assessable profits under HKD 2M. A company with HKD 10M in revenue and HKD 1.5M in profits still qualifies for the full reduced rate.
“I can split my business into two companies to double the benefit.” No. Connected-entity rules exist precisely to stop this. Two connected companies still share one HKD 2M bracket between them.
Worked example: a three-company HK group
Imagine a founder owns three HK limited companies: a trading arm with HKD 3M profit, a consultancy with HKD 1M profit, and a property holding with HKD 200K profit. All three are owned 100% by the same individual.
Only one can elect the two-tier rate. The best nomination is the trading arm, because it fully uses the HKD 2M reduced-rate bracket. Its tax under two-tier: HKD 2M × 8.25% + HKD 1M × 16.5% = HKD 330,000. Compared to a flat 16.5% on HKD 3M (HKD 495,000), the saving is HKD 165,000.
The consultancy and property holding are taxed at 16.5% flat. In a later year, if the consultancy’s profit grows and the trading arm’s shrinks, the founder can re-nominate.
Let us help you nominate correctly
Giga Accounting by 凌峰會計 helps HK SME groups map their connected entities, project annual profits, and nominate the right company each year. If you run more than one HK entity — even if one is dormant or just an investment-holding shell — it is worth a 20-minute conversation before you sign this year’s BIR51.
Read our companion guide to Hong Kong profits tax for small businesses, or head to the Giga Accounting by 凌峰會計 homepage to see our full range of bookkeeping and accounting services. We will review your group structure, nominate the right entity, and make sure nothing is left on the table.
