1. When is the Profits Tax Return (BIR51) issued and due?
The IRD usually issues profits tax returns on the first working day of April each year. Operating companies generally must file within 1 month of the issue date; a newly formed company's first return generally has 3 months. Even if the company has no profit or makes a loss, it must still file on time.
Profits tax is two-tiered: 8.25% on the first HK$2 million of assessable profits, then 16.5%.
2. Block Extension via a Tax Representative
Companies that appoint a tax representative (e.g. an accountant) can enjoy a block extension. Common deadlines are as follows:
| Financial year-end date | Usual extended deadline | Remarks |
|---|---|---|
| 31 December | 15 August of the following year | Tax representative must be appointed |
| 31 March | 15 November of the same year | Tax representative must be appointed |
| April to November | About 30 April | Generally no additional extension |
Actual dates are subject to the IRD's annual announcement and may be postponed for holidays. Companies with a year-end in January or February have special extension arrangements; please enquire individually.
3. Prepare the Audit Report Early
A limited company's financial statements generally must be audited by a licensed accountant, and the tax return must be filed together with the audit report. We suggest handing over documents and bank statements within 1 month after year-end and completing the audit in about 4 months, leaving time for tax filing.
4. Annual Return (NAR1)
The annual return must be delivered to the Companies Registry within 42 days after the anniversary of incorporation. The registration fee for a private company filing on time is HK$105; late fees increase with the delay, from HK$870 up to HK$3,480. Private companies declared dormant may be exempt.
5. Distributing Financial Statements to Shareholders
A private company generally must send the financial statements together with the audit report to shareholders within 9 months after year-end.
Use the Calculator to See Your Company's Dates
Enter your year-end month and incorporation date, and the Audit & Tax Deadline Calculator will list your company's timetable and days remaining. If you'd like a professional accountant to handle it, see our Audit & Tax Filing.
Sources: Hong Kong Chartered Governance Institute (HKICS) statutory filing deadlines table (updated 28 September 2026) and Chan & Chung company tax guide. This article is a general summary and not legal or tax advice; actual deadlines are subject to the IRD, the Companies Registry and the company's articles.