Hong Kong Company Accounting & Tax Filing: Process, Fees, Deadlines, and Nil Returns Explained

For a Hong Kong company, the key to tax filing is not "whether you made money," but whether you complete this chain every year: keeping the books, having them audited by a Hong Kong practising CPA, and filing the Profits Tax Return. Filing a return is not the same as paying tax; even with no business, a loss, or a claim of offshore income, you generally still have to file and retain documents as required by the Inland Revenue Department (IRD). Taiwanese businesses often assume an offshore company can file nil returns indefinitely, but in recent years the IRD has paid closer attention to inactive companies, audit documentation, and disclosure of offshore profits.

Hong Kong company tax-filing fee ranges: budget first

For a small Hong Kong company, the annual accounting and tax-filing budget commonly runs about HK$5,800–13,000, or roughly NT$22,000–49,000 (rough estimate at about HK$1 ≈ NT$3.8; actual exchange rate and quotes vary). Broken down: bookkeeping is about HK$2,000–5,000 (about NT$7,600–19,000); a small audit is about HK$3,000–6,000 (about NT$11,400–22,800); and the tax return plus tax computation is about HK$800–2,000 (about NT$3,000–7,600).

What drives the price is not the company's name, but the number of transactions, the number of bank accounts, whether contracts and invoices are complete, whether there are cross-border receipts, whether an offshore exemption is claimed, and whether the books need to be reconstructed. A company with no operations is not free either, because you still have to determine whether it qualifies as a dormant company under the Companies Ordinance and confirm whether the IRD has already issued a return.

To be clear: statutory audit is handled by a Hong Kong practising CPA and is an external professional service. Chan & Chung's role is Hong Kong company formation, coordination of company secretary and annual compliance services, and advisory on cross-border tax and banking-collection arrangements; bookkeeping and audit are carried out in coordination with licensed Hong Kong professionals.

The 7-step Hong Kong company accounting and tax-filing workflow

1. Receive the Profits Tax Return. A limited company is usually issued a BIR51, an unincorporated business commonly a BIR52, and a sole proprietorship links through to a BIR60. The IRD's 2025/26 circular also reminds that supplementary forms S1–S22 must be handled in the designated electronic format.

2. Organise the books. A company can keep its own books or outsource, but bank statements, sales invoices, purchase invoices, contracts, payment records, and platform revenue reports must all be complete.

3. Cooperate with a Hong Kong practising CPA for the audit. A limited company's audit cannot be self-signed. The IRD's 2025/26 circular states that a corporation with gross income is generally required to submit audited financial statements with its return, with exceptions such as dormant companies handled separately.

4. Issue the auditor's report and financial statements.

5. Prepare the tax computation, adjusting for non-deductible items, capital expenditure, depreciation allowances, offshore profits, and so on.

6. File the BIR51, the audited financial statements, the tax computation, and any required supplementary forms.

7. Wait for the notice of assessment, then pay the profits tax or raise an enquiry/objection according to the assessment result.

Key deadlines: 18-month first return, April each year, Block Extension

A newly incorporated Hong Kong company usually receives its first Profits Tax Return about 18 months after incorporation; the IRD's 2025/26 circular states that a newly registered corporation is generally issued its first Profits Tax Return about 18 months after incorporation, and the first return may be filed within 3 months from the date of issue.

Thereafter, active companies usually receive their returns in bulk each April. The bulk issue date for the 2025/26 returns is 1 April 2026. If handled by a tax representative, an extension is available under the IRD's Block Extension Scheme: N code (accounting date 1/4/2025–30/11/2025) has no extension; D code (December 2025 year-end) is extended to 17/8/2026; M code (January–March 2026 year-end) is extended to 16/11/2026; and M code loss cases may apply to extend to 1/2/2027. The latest dates should follow the IRD's 2025/26 Block Extension Circular. Tax filing is only one part of annual compliance; the annual return, business registration certificate renewal, and other timelines can be arranged together by referring to the Hong Kong annual compliance calendar.

How Hong Kong profits tax is calculated

Hong Kong applies the territorial source principle, so generally only profits sourced in Hong Kong are subject to profits tax. The IRD's Profits Tax page states that a limited company's two-tiered rates are 8.25% on the first HK$2,000,000 of assessable profits and 16.5% on the remainder; for unincorporated businesses the rates are 7.5% and 15%.

Example: for a limited company with assessable profits of HK$3,000,000, the tax on the first HK$2,000,000 is HK$165,000, and the tax on the remaining HK$1,000,000 is HK$165,000, totalling HK$330,000, about NT$1,254,000. A group can generally nominate only one entity to enjoy the halved two-tiered rate, and cannot claim it repeatedly for every company.

Can you use nil returns? And what is a dormant company

A nil return is not "just tick a box because there's no income." If the company has bank receipts, platform income, contracts, expenses, or any business activity, you should first keep the books, then have a professional determine whether an audit is needed and whether to report a loss or profit. The IRD circular explains that a dormant company must meet the dormancy arrangement under the Companies Ordinance; only a company that has filed a special resolution with the Companies Registry and meets the conditions may be exempt from documents such as audited financial statements.

No business does not necessarily mean no filing. Once you receive a BIR51 you must deal with it; you cannot skip filing just because no invoices were issued. Reporting a loss truthfully is also advisable, because a Hong Kong business loss can generally be carried forward to offset future profits of the same business.

Offshore exemption: it can save tax, but it is not automatic

Hong Kong taxes on a territorial-source basis, which does not mean all income of a Hong Kong company is tax-free. An offshore exemption depends on actual operations: where contracts are negotiated and signed, where customers are, where services are performed, where staff and offices are, and how logistics and platform money flows run. If contracts are signed in Hong Kong, core work is performed by staff in Hong Kong, or the documents cannot support a non-Hong Kong source, the IRD will often raise questions.

Applying for an offshore exemption usually requires completing the audit and tax computation first, then raising the claim at filing and preparing evidence such as contracts, emails, logistics, receipts, and work records. Since 2023, the Foreign-Sourced Income Exemption (FSIE) regime and economic-substance requirements have also made some passive income and cross-border arrangements more dependent on case-by-case judgement. This falls within cross-border tax advisory and document preparation, and whether it is accepted is ultimately determined by the IRD.

Penalties for late or under-reporting

Do not treat a late filing as a minor administrative matter. The IRD's Penalty Policy states that filing late without reasonable excuse, under-reporting, providing incorrect information, or failing to notify chargeability can result in a fine of HK$10,000 plus a further penalty of up to three times the undercharged tax; wilful tax evasion can be punished by a fine of HK$50,000, three times the undercharged tax, and three years' imprisonment. The actual handling and amounts still depend on the individual case and the IRD's latest announcements.

Special notes for Taiwanese and mainland-China outbound business owners

Hong Kong companies are often used for cross-border e-commerce, foreign trade, SaaS, brand expansion, and collections, but tax risk is not limited to Hong Kong. If the company's actual management, key personnel, major decisions, or customer performance all take place in mainland China or Taiwan, issues such as local tax residency, permanent establishment, controlled foreign companies, and CRS financial-account information exchange may all come up. Hong Kong's low tax rate is not a guarantee of tax exemption; the document chain and operational substance are what matter.

How to arrange your Hong Kong company's accounting and tax filing

The most reliable approach is to organise your bank flows, contracts, invoices, and platform reports every month, rather than scrambling to reconstruct the books after the BIR51 arrives. A small company can start with a cloud folder that separates bank statements, revenue, costs, expenses, contracts, company-secretary documents, and tax correspondence. Before the year-end close, confirm whether to apply for an offshore exemption, whether there are related-party transactions, and whether cross-border tax advice is needed.

Chan & Chung can help Taiwanese and Chinese-speaking business owners plan Hong Kong company formation, coordination of company secretary and annual compliance services, and cross-border tax and banking-collection arrangements; where regulated trust or company services are involved, these are provided by the licensed TCSP Intelligent Services Limited (TCSP licence no. TC010349). If you need to assess your accounting and tax-filing arrangements, it is advisable to first prepare the last 12 months of bank statements, revenue sources, transaction volume, and whether you claim offshore income, then determine the workload for bookkeeping, audit, and filing.

FAQ

Does a Hong Kong company with no business still need to file?

Yes. Filing a return is not the same as paying tax; once you receive a return you must deal with it. Only in exceptions such as a dormant company under the Companies Ordinance may some audit-document requirements be waived.

About how much does Hong Kong company accounting and tax filing cost?

For a small company, the total commonly runs about HK$5,800–13,000, or about NT$22,000–49,000. With many transactions, messy books, an offshore-exemption claim, or complex cross-border documents, the cost rises.

When is the first return due?

A newly incorporated Hong Kong company usually receives its first Profits Tax Return about 18 months after incorporation, and the first return can generally be filed within 3 months from the date of issue.

Can a Hong Kong company file nil returns?

You cannot file a nil return just because there is no profit. Whether it can be treated as inactive or dormant depends on whether the company has transactions, whether the dormancy procedure is complete, and whether the IRD requires documents to be submitted.

Are offshore company profits really tax-free?

Not necessarily. Non-Hong Kong-sourced profits can be claimed for offshore exemption, but this must be supported by evidence of contracts, performance, personnel, logistics, and receipts, and is judged case by case by the IRD.

Can you do the audit yourself?

No. A company can keep its own books, but the statutory audit must be signed off by a Hong Kong practising CPA.