Hong Kong has one of the simplest tax systems in the world — but “simple” doesn’t mean there’s nothing to understand. For SME owners, profits tax is the most significant tax obligation you’ll face, and getting it wrong can mean penalties, delays, and unwelcome surprises at the end of your financial year.
This guide cuts through the jargon and explains everything a Hong Kong small business owner needs to know about profits tax — including how to keep your accounts organised so that tax season never becomes a crisis.
What Is Profits Tax and Who Pays It?
Profits tax is a tax levied by the Hong Kong Inland Revenue Department (IRD) on profits arising from a trade, profession, or business carried on in Hong Kong. It applies to:
- Corporations — limited companies incorporated in Hong Kong or elsewhere but carrying on business in HK
- Partnerships — including limited partnerships
- Sole proprietors — individuals carrying on a business in their own name
- Unincorporated bodies — associations, clubs, and similar organisations that generate taxable profits
The key phrase is “arising in or derived from Hong Kong.” Profits from business activities conducted entirely outside Hong Kong are generally not subject to profits tax — but establishing that a profit is genuinely offshore in nature requires proper documentation and, in many cases, professional advice.
Individuals who are employees earning a salary do not pay profits tax — they pay salaries tax instead. Profits tax is specifically for business profits.
How the Two-Tier Tax Rate Works (8.25% / 16.5%)
One of Hong Kong’s most business-friendly features is its two-tier profits tax system, introduced to give small businesses a lower effective tax rate. Here’s how it works:
- The first HK$2 million of assessable profits is taxed at 8.25% (for corporations) or 7.5% (for unincorporated businesses)
- Any profits above HK$2 million are taxed at the standard rate of 16.5% (corporations) or 15% (unincorporated businesses)
This two-tier system means that a company with HK$2 million in assessable profits pays HK$165,000 in tax — an effective rate of 8.25%. A company with HK$5 million in assessable profits pays HK$165,000 on the first HK$2 million and HK$495,000 on the remaining HK$3 million — a total of HK$660,000, or an effective rate of 13.2%.
Important: Only one entity within a group of connected companies can benefit from the reduced rate on the first HK$2 million. If you have multiple related companies, you’ll need to nominate which one claims the lower rate.
What Counts as Assessable Profits
Your assessable profits are not simply your total revenue — they’re calculated by taking your revenue and subtracting allowable deductions. The starting point is your accounting profit (as shown in your profit and loss account), which is then adjusted for tax purposes.
Items that increase your assessable profits (i.e. are added back):
- Depreciation charged in your accounts (replaced by capital allowances under tax rules)
- Private or personal expenses charged to the business
- Provisions that don’t meet IRD criteria
- Entertainment expenses above the allowable portion
- Fines and penalties
Items that reduce your assessable profits:
- Capital allowances on qualifying plant and machinery
- Industrial and commercial building allowances
- Approved charitable donations (subject to limits)
- Losses carried forward from previous years
Common Deductible Expenses for HK SMEs
The general rule is that expenses are deductible if they are incurred wholly and exclusively for the purpose of producing assessable profits. Common deductible expenses for Hong Kong SMEs include:
- Staff salaries, wages, and bonuses — including MPF employer contributions
- Office rent — if you rent your business premises
- Business insurance premiums
- Professional fees — accounting, auditing, and legal fees directly related to business operations
- Utilities — electricity, water, and internet used for business purposes
- Repairs and maintenance — of business premises and equipment (not improvements)
- Bank charges and interest — on loans used for business purposes
- Advertising and marketing costs
- Bad debts — trade debts that have been written off and are genuinely irrecoverable
- Travel expenses — for business purposes, properly documented
Expenses that are not deductible include: capital expenditure (though capital allowances may apply), domestic or private expenses, and costs incurred before the business commenced.
How to Prepare for Your Profits Tax Return
The IRD issues profits tax returns (BIR51 for corporations, BIR52 for partnerships and sole proprietors) each April. You generally have one month to file, though your CPA or tax representative can usually apply for an extension.
What you’ll need to file:
- Audited financial statements — for incorporated companies, your accounts must be audited by a certified public accountant before filing
- Profits tax computation — a schedule showing how your accounting profit has been adjusted to arrive at assessable profits
- Supporting schedules — details of depreciation, capital allowances, loan interest, and other specific items
This is why your bookkeeping matters so much throughout the year. If your accounts are incomplete, inconsistent, or disorganised when the return is due, your accountant will need to spend time (and your money) reconstructing them — and your audit will take longer and cost more.
The best way to prepare for your tax return is to never fall behind on your books in the first place.
How Accounting Software Keeps You Tax-Ready Year-Round
The businesses that handle tax season with the least stress are almost always the ones with well-maintained, up-to-date books throughout the year. Good accounting software makes this possible without requiring you to be an accounting expert.
Here’s what the right software does for you:
- Keeps your profit and loss account current — so you always have a real-time view of your taxable profits, not just a year-end surprise
- Tracks deductible expenses consistently — by coding transactions to the correct accounts, your deductible expenses are captured accurately without end-of-year scrambling
- Produces Hong Kong-format financial statements — reports formatted to meet the expectations of your CPA and auditor, reducing the time they need to spend preparing your accounts
- Maintains a clean audit trail — every transaction is recorded with a date, reference, and description, making it straightforward to verify entries if the IRD ever asks questions
- Supports multi-year data retention — the IRD requires businesses to keep records for at least seven years; good software holds multiple years of data without performance issues
Giga Accounting by 凌峰會計 is designed specifically for Hong Kong businesses, with report formats that align with local CPA and auditor requirements and the ability to store years of records without slowdown. If you’re currently managing your books in spreadsheets — or not managing them as consistently as you’d like — it’s worth exploring what a purpose-built system can do for your tax readiness.
Get Your Books Tax-Ready Before the Rush
Don’t wait until April to find out your accounts need work. The best time to get your bookkeeping in order is right now — so that when your tax return is due, your CPA has everything they need and you’re not facing a stressful, expensive scramble.
Explore our bookkeeping and accounting services, try a free download of Giga Accounting, or check our pricing page to find the right option for your business. And if you’d like to talk through your specific situation, our team is here to help.
