Your Easy Guide to Personal Income Tax for Small Business Owners in Hong Kong

Q: Is it mandatory to choose a personal assessment?

No, it is not. Personal Assessment is completely optional . By default, different types of income (from business, salary, or property) are taxed separately under their own rules. You only need to consider Personal Assessment if it might lower your total tax bill. It is a choice you make each year when filing your tax return.

Yip Yuk Ming

9 mins read

Published:

7 August 2025

Updated:

30 October 2025

Take personal income tax assignment off your plate

As a small business owner running a sole proprietorship or partnership, your company isn’t a separate legal business entity from you. When your business earns money, you’ll need to know how to pay taxes on that income. Since you and your business are one and the same in the eyes of the law, you’ll report your earnings directly on your personal tax return.

Because of this, your business profit is handled through the profits tax system, which we will focus on in this article.

Need help with personal income tax?

Understanding the Hong Kong personal income tax system

Unlike many other countries, Hong Kong has a territorial tax system. This means you are only taxed on income that is sourced in Hong Kong. If your business earns profits from outside Hong Kong, you are entitled to offshore tax exemption benefits.

For individuals, there are three main types of income tax:

Salaries Tax: This applies to income from employment.
Profits Tax: This is levied on the profits of businesses.
Property Tax: This is charged on income from renting out property.

How does personal income tax work for SMEs?

In Hong Kong, the personal income tax of small business owners isn’t a separate tax on you.

Instead, the profit your business makes is taxed directly through a system called Profits Tax. It’s simple, direct, and designed to be business-friendly.

Here is exactly how it works for sole proprietors and partnerships:

✔ You are taxed on profit, not revenue

You only pay tax on your assessable profit. This is your total business income minus all your deductible business expenses (like rent, supplies, and staff salaries).

✔ Low, two-tiered tax rates

Hong Kong has a very competitive tax system. For unincorporated businesses (sole proprietorships/partnerships), your profits are taxed as follows:

The first HK$2 million of profit is taxed at 7.5%.
Profits exceeding HK$2 million are taxed at 15%.

✔ You file a profits tax return

You don’t declare this on a personal income tax form. The Inland Revenue Department (IRD) will send you a specific Profits Tax Return (Form BIR52) to report your business’s income and expenses.

✔ Option for personal assessment

You have a choice to elect for “Personal Assessment.” This allows you to combine your business profits with other personal income (if any) and be taxed at personal progressive rates (starting from 2%).

What is a personal assessment?

It is an optional calculation method offered by the Hong Kong government.

Instead of paying tax on your different income streams separately, you can choose to lump them all together. When you elect for personal assessment, the Inland Revenue Department (IRD) will:

Combine all your income (salary + business profits + rental income).
Subtract any personal allowances you are eligible for (like the Basic Allowance, Married Person’s Allowance, Child Allowance, etc.).
Calculate your final tax bill on the remaining amount using the progressive tax rates (the ones that start at 2% and go up to 17%).

The goal is to potentially lower your overall tax bill.

A Guide to Hong Kong Offshore Tax Exemption

Chargeable and non-chargeable employment income for personal assessment

If you earn a salary from a separate job or pay yourself a director’s fee from your own company, that income is subject to Hong Kong’s Salaries Tax. It’s also the income you would include if you elect for Personal Assessment.

Here’s what is and isn’t taxable:

Chargeable Employment Income (Taxable)	Non-Chargeable Employment Income (Not Taxable)
Salary, wages, and director’s fees	Severance payments
Bonuses, commissions, tips, and gratuities	Long service payments
Allowances, perquisites, and other fringe benefits	Jury fees
Stock awards and share options provided by your employer	Termination payments and retirement benefits (pensions)
Back pay and payments in lieu of notice

2025/26 personal tax rates and allowances for SMEs in Hong Kong

For the tax year 2025/26 (from 1 April 2025 to 31 March 2026), you need to be aware of two key sets of tax rates.

First, the Profits Tax rates that apply to your business profits.

Second, the personal tax rates and allowances that apply if you elect for Personal Assessment.

If you choose to combine your business profits with your other personal income, the following progressive tax rates and allowances for the 2025/26 year will be used to calculate your tax.

Progressive tax rates (salaries tax rates)

Net Chargeable Income (HK$)	Rate
First $50,000	2%
Next $50,000	6%
Next $50,000	10%
Next $50,000	14%
Remainder	17%

Key personal allowances for 2025/26

These allowances reduce your total taxable income. Here are the most common ones:

Allowance Type	Amount (HK$)
Basic Allowance	$132,000
Married Person’s Allowance	$264,000
Child Allowance (per child)	$130,000
Additional Child Allowance in Year of Birth	$130,000 (Total: $260,000)
Dependent Parent/Grandparent Allowance (age 60+)	$50,000
Dependent Parent/Grandparent Allowance (age 60+, living with you)	$100,000
Dependent Parent/Grandparent Allowance (age 55-59)	$25,000
Dependent Parent/Grandparent Allowance (age 55-59, living with you)	$50,000
Single Parent Allowance	$132,000
Personal Disability Allowance	$75,000

Important Note: The information provided is based on the announced figures for the 2025/26 Year of Assessment. Tax laws can be subject to change.

How to calculate personal income tax for small business owners?

In Hong Kong, calculating the tax for your small business can be done in two primary ways. You must determine which method results in a lower tax bill for your specific situation.

Method 1: Calculating profits tax (the standard way)

This is the default method where your business is taxed on its profits. The calculation is simple and direct.

Step 1: Determine your assessable profit: This is the money your business made after all business-related costs have been paid.

Assessable Profit = Total Business Revenue – Allowable Expenses

Step 2: Apply the two-tiered tax rates: For sole proprietors and partnerships, you apply the business tax rates to your assessable profit.
- 7.5% on the first HK$2 million.
- 15% on the remainder.

Example: Your business has an assessable profit of HK$300,000.

HK$300,000 (Profit) × 7.5% (Tax Rate) = HK$22,500 (Total Tax)

Method 2: Calculating tax under personal assessment (the optional way)

This method lets you combine your business profit with other income and use your personal allowances. It’s often better if you have low overall income or high personal allowances.

Step 1: Calculate your total income: Combine all sources of income.

Total Income = Business Profit + Salary + Rental Income (if any)

Step 2: Subtract your personal allowances: Deduct any allowances you are eligible for (e.g., Basic, Married, Child Allowances) to find your “Net Chargeable Income.”

Net Chargeable Income = Total Income – Total Allowances

Step 3: Apply progressive tax rates: Use the personal progressive tax rates (2%, 6%, 10%, etc.) on your Net Chargeable Income.

Example (using the same business profit):

Your business profit is HK$300,000.
You have no other income.
You are single and claim the Basic Allowance (HK$132,000 for 2025/26).

Calculation:

Net Chargeable Income: HK$300,000−HK$132,000=HK$168,000.
Tax on first $50,000 @ 2% = $1,000
Tax on next $50,000 @ 6% = $3,000
Tax on next $50,000 @ 10% = $5,000
Tax on remaining $18,000 @ 14% = $2,520

Total Tax Payable: $11,520

In this case, choosing Personal Assessment saves over HK$10,000. It is crucial to run both calculations to ensure you are using the most financially beneficial method for your situation.

Deadlines and compliance calendar for personal income tax for SMEs

Staying compliant in Hong Kong means knowing your key dates. The tax year runs from April 1 to March 31. While specific tax deadlines are printed on your tax return, here is a typical calendar to help you stay ahead.

Your annual tax compliance calendar

April: Tax season begins

The Inland Revenue Department (IRD) usually issues Profits Tax Returns (Form BIR52) on the first working day of April. This is the official start of tax season for the year that just ended on March 31.

May – August: Filing deadlines

The deadline to file your Profits Tax Return depends on your business’s accounting year-end date.

Businesses with a year-end between December 1 – December 31 (“D” Code): Your filing deadline is usually around mid-August.
Businesses with a year-end between January 1 – March 31 (“M” Code): Your filing deadline is typically around mid-November.
Businesses with a year-end between April 1 – November 30 (“N” Code): Your filing deadline is usually in early May.

November: Mid-year check-in

This is a great time to review your bookkeeping for the current financial year. Ensure your records are up-to-date to avoid a rush when the tax year ends.

January: Provisional tax payment

Your tax bill will include a “Provisional Profits Tax” charge for the upcoming year. The first installment is typically due in January. Check your tax assessment notice from the IRD for the exact amount and due date.

March 31: Tax year ends

The tax assessment year officially concludes. Make sure all your financial records, invoices, and expense receipts for the past 12 months are organized and complete.

Pro Tip: Get an Extension! If you hire a tax representative (like an accountant), you are automatically enrolled in the Block Extension Scheme. This can push your filing deadlines significantly, often to later in the year. For example, a "D" Code deadline might be extended from August to June of the following year. This is a major benefit for managing your compliance workload.

5 Common mistakes in filing personal income tax for small business owners in Hong Kong

Filing your taxes is straightforward, but a few common slip-ups can cause headaches and cost you money. Here are the top mistakes to avoid to ensure a smooth and accurate process for filing profit tax.

1. Poor or incomplete record-keeping

This is the most common mistake. Without proper records of your income and expenses, you can’t accurately calculate your profit, you risk overpaying tax, and you have no proof if the IRD asks for details.

How to Avoid: Use a simple spreadsheet or accounting software. Remember, the IRD requires you to keep business records for at least 7 years.

2. Mixing business and personal expenses

Using your business account for personal dinners or your personal card for business supplies makes it nearly impossible to determine your true business profit. This is a major red flag for tax auditors.

How to Avoid: Open a separate bank account dedicated solely to your business from day one. It is the easiest way to keep finances clean.

3. Not choosing the best tax method

Many business owners automatically pay the standard Profits Tax without checking if they could save money. Forgetting to calculate your liability under Personal Assessment could mean you’re paying thousands more than you need to.

How to Avoid: Always run a quick comparison. Calculate your tax bill using both the Profits Tax rates and the Personal Assessment method to see which is lower.

4. Claiming non-deductible expenses

You cannot claim every expense. Trying to deduct costs that aren’t for business purposes or are specifically disallowed can lead to your return being rejected and potential penalties.

How to Avoid: Be aware of common non-deductible items like private travel costs, fines and penalties, or large capital expenditures (which are handled through depreciation, not as a direct expense).

5. Missing filing and payment deadlines

Forgetting your filing due date or when your Provisional Tax payment is due leads to automatic penalties. The IRD issues a 5% surcharge on late payments, which can add up quickly.

How to Avoid: Mark the dates from the compliance calendar in your own calendar. If you hire a tax representative, they can help you get an extension and manage these deadlines.

Simplify your personal income tax filing

Going through Hong Kong’s tax rules takes time, but you don’t have to do it alone. At Sleek, we specialize in stress-free tax filing and auditing for SMEs.

Our experts ensure you stay compliant, maximize your deductions, and avoid costly mistakes so you can focus on what matters most—growing your business. Let our team handle the complexities with confidence.

Contact Sleek today to see how we can help with your tax and audit needs!

Sleek is here to help with your personal income tax

FAQs about personal income tax for small business owners in Hong Kong

Is it mandatory to choose a personal assessment?

No, it is not. Personal Assessment is completely optional.

By default, different types of income (from business, salary, or property) are taxed separately under their own rules. You only need to consider Personal Assessment if it might lower your total tax bill. It is a choice you make each year when filing your tax return.