Hong Kong Tax Residence Certificate: the rule, how days are counted, examples

Summary

Hong Kong issues a Certificate of Resident Status to people who need to prove to another tax authority that they are Hong Kong residents under a tax treaty. An individual qualifies by ordinarily residing in Hong Kong, or by staying in Hong Kong for more than 180 days in a year of assessment, or for more than 300 days in two consecutive years of assessment, one of which is the year in question. A year of assessment runs from 1 April to 31 March. The day count is a goal, not a trigger for Hong Kong tax. The Inland Revenue Department decides the application.

Goal, one year: More than 180 days in a year of assessment
Goal, two years: More than 300 days in two consecutive years of assessment
Period: The year of assessment, 1 April to 31 March
Other route: Ordinarily residing in Hong Kong, with no day count
Basis: The resident article of each Hong Kong tax treaty
Run by: Inland Revenue Department, Tax Treaty Section

Who it applies to

Hong Kong residents who receive dividends, interest, royalties or pensions from a country that has a tax treaty with Hong Kong.
People who work across the border in mainland China and claim relief under the arrangement between the mainland and Hong Kong.
People who moved to Hong Kong recently and want to know when they can first get a certificate.
People who travel a lot and are not sure whether they ordinarily reside in Hong Kong.
Advisers who apply for a certificate for a client.

The rule

Hong Kong taxes by source, not by residence. Salaries tax, profits tax and property tax apply to income that arises in or comes from Hong Kong, whoever earns it. For that reason Hong Kong has no general rule that makes a person liable to tax after a number of days. Residence matters for one main purpose: to claim benefits under one of Hong Kong's comprehensive double taxation agreements, which this page calls tax treaties.

A treaty partner usually asks for proof that the person is a Hong Kong resident. The proof is the Certificate of Resident Status, issued by the Inland Revenue Department. The Department lists three kinds of individual who can apply: a person who ordinarily resides in Hong Kong, a person who stays in Hong Kong for more than 180 days during a year of assessment, and a person who stays for more than 300 days in two consecutive years of assessment, one of which is the relevant year of assessment. The exact wording comes from the resident article of each treaty, so the Department tells applicants to read the treaty they want to use.

The year of assessment runs from 1 April to 31 March. The two day routes use the words more than, so 180 days are not enough for the one-year route and 300 days are not enough for the two-year route. In the two-year route, the same pair of years can support a certificate for either of the two years.

The certificate does not guarantee the benefit. The Department states that issuing a certificate will not guarantee that the claim under the treaty succeeds. The treaty partner decides whether all conditions for relief are met. A certificate is issued only where a treaty is in force with the other place and only for the purpose of claiming treaty benefits.

Why it exists

Tax treaties cut the tax that one place charges on income paid to residents of the other place. The paying country wants to give that cut only to real residents. Hong Kong has no general residence rule in its own tax system, so the treaties define a Hong Kong resident by ordinary residence or by days of stay, and the certificate is the official proof.

Counting the days

You count the days you stayed in Hong Kong inside a year of assessment, from 1 April to 31 March. This rule is a goal: you want more than 180 days in one year, or more than 300 days across two years.

Take the year of assessment for which you need the certificate, for example 1 April 2025 to 31 March 2026.
List every stay in Hong Kong in that year and add up the days.
If the total is 181 days or more, the one-year route is met.
If not, add the days of the year of assessment just before or just after it.
If the two years together have 301 days or more, the two-year route is met for either year.
If neither route is met, consider whether you ordinarily reside in Hong Kong, which has no day count.

How Countr counts it. Countr counts every day on which you were in Hong Kong for any part of the day, in the year of assessment that starts on 1 April, and shows your progress towards 181 days. It also works out the two-year route of more than 300 days. That route can support either year of the pair. Select the later year to see all the recorded days, because a view of the first year cannot use days that come after it. The app does not assess ordinary residence. The Inland Revenue Department's pages do not say how part days are treated, so keep a small margin.

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Examples

The one-year route

Claire moved to Hong Kong in March 2025. In the year of assessment from 1 April 2025 to 31 March 2026 she is in Hong Kong for 240 days and travels for the rest. That is more than 180 days. She can apply for a Certificate of Resident Status for that year, for example to claim a lower rate of tax on dividends from a company in a treaty country.

The two-year route

Daniel spends 170 days in Hong Kong in the year of assessment 2025/26 and 140 days in 2026/27. Neither year has more than 180 days. Together the two consecutive years have 310 days, which is more than 300. He meets the two-year route, and it can support a certificate for 2025/26 or for 2026/27. He cannot know this before enough days of the second year have passed.

Exactly on the numbers

Mina has exactly 180 days in Hong Kong in 2025/26 and exactly 120 days in 2026/27. She is not over 180 days in the first year, and the two years together make exactly 300 days, which is not more than 300. Neither day route is met. One more day in either year would have changed the result. She can still qualify if she ordinarily resides in Hong Kong, which depends on her home and her way of life.

Exceptions

A person who ordinarily resides in Hong Kong can get a certificate without meeting either day count.
No certificate is issued for a place that has no tax treaty in force with Hong Kong.
No certificate is issued for purposes other than claiming treaty benefits, for example as general proof of address.
Under the arrangement with mainland China, a certificate for one calendar year generally also serves as proof for the two following calendar years, unless your circumstances change.
A treaty can contain its own definition of resident and its own tie-breaker tests, and these decide the case when they differ from the general wording.

Common misconceptions

“After 180 days in Hong Kong I have to pay Hong Kong tax on all my income.”: Hong Kong taxes income by source. The number of days does not make foreign income taxable. The 180 days matter only for proving residence under a tax treaty.
“The days are counted in the calendar year.”: They are counted in the year of assessment, which runs from 1 April to 31 March.
“With the certificate, the other country must give me the lower tax rate.”: The Inland Revenue Department says the certificate does not guarantee the claim. The treaty partner decides whether all the conditions of the treaty are met.
“I need 180 days.”: You need more than 180 days, so 181. In the two-year route you need more than 300 days, so 301.

Questions and answers

How do I apply for the certificate?

You apply online through the Individual Tax Portal under eTAX, or by post or in person to the Tax Treaty Section. There is a form for claims under the mainland China arrangement, IR1314A, and a form for other places, IR1314B. There is no fee.

How long does the Inland Revenue Department take?

The Department aims to issue the certificate, or to tell you its decision, within 21 working days after it receives a properly completed application.

Can I be resident under the two-year route in a year when I was hardly in Hong Kong?

Yes, if the two consecutive years together have more than 300 days. For example, 290 days in one year and 15 days in the next make 305 days, and the route can support either year.

Does the 60-day rule for salaries tax have anything to do with this?

No. That is a separate rule in the Inland Revenue Ordinance about visitors who work in Hong Kong for 60 days or less in a year of assessment. It is about salaries tax, not about resident status under a treaty.

Can one application cover several years?

Yes. The Department says one application can cover up to three calendar years for the same treaty partner. In general only one certificate is issued for each treaty for each year.

What if the other country refuses the treaty benefit although I have the certificate?

If you think the refusal is wrong, you can ask the Hong Kong competent authority to take up the case with the treaty partner under the mutual agreement procedure in the treaty.

Sources

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This page explains the rule and how the days are counted. It is not legal or tax advice. The authority decides each case on its own facts.