How to become a tax resident of Thailand in 2026
180 days in a calendar year, tax on foreign income only when it is brought into the country, and an exemption for holders of the ten-year visa: a guide for foreigners.
In short: you become a tax resident of Thailand if you spend 180 days or more in the country in a calendar year. There are no other tests. A resident pays tax on Thai income and on foreign income earned from 2024 when it is brought into Thailand.
| Item | In 2026 |
|---|---|
| Day rule | 180 days or more in a calendar year |
| Legal basis | Section 41 of the Thai Revenue Code |
| Centre of vital interests | no such test: only days in the calendar year matter |
| Special regime | holders of the ten-year Long-Term Resident visa pay no tax on foreign income even when it is brought in; specialists at approved companies pay 17% on salary |
| Is a residence permit needed | no separate permit is needed for the status, but you can only stay 180 days on a long-stay visa |
| Residency certificate | the local Revenue Department office, after filing a return, in about a month |
| Foreign income | taxed on the 0-35% scale only when brought into Thailand and only if earned from 2024 |
Data checked 07.10.2026. Amounts in US dollars at the Central Bank of Russia rate on 7 October 2026.
Thailand defines tax residency by a single number: 180 days in a calendar year. Neither a home, nor family, nor the type of visa affects the status. So wintering from November to March does not make you resident: the days split between two years.
The key feature is tax on foreign income. A resident does not always pay it, only when the money is brought into Thailand, and only on income earned from 2024. Below: how days are counted, how to become resident step by step, where to get the certificate and what citizens of particular countries should bear in mind.
How days are counted in Thailand
All days of physical presence in Thailand in the calendar year, from 1 January to 31 December, are counted. The days need not be consecutive: trips are added up. The day of arrival and the day of departure count as days in the country.
Status is determined afresh each year. In a year when you spend fewer than 180 days in Thailand you are non-resident and pay only on Thai income, and foreign money brought in that year is not taxed. This is used in planning: large transfers are made in a year with fewer than 180 days.
| Situation | How it counts |
|---|---|
| 180 days or more in a calendar year | resident for that year |
| 179 days in a calendar year | non-resident, even with a home and family in Thailand |
| Wintering from 1 November to 31 March | 61 days in one year and 90 in the other: non-resident in both |
| Day of arrival and day of departure | count as days in Thailand |
| Several trips in a year | days are added up; they need not be consecutive |
| Foreign income brought in during a year with fewer than 180 days | no tax |
Days are proven by passport stamps and immigration records. You can count them by travel dates in our tax residency calculator.
How to become a tax resident of Thailand: step by step
The status arises by itself once you reach 180 days. What you need to arrange is not the status but the right to live in the country, a tax number and a return.
- Choose a long-stay visa. You cannot stay 180 days on visa-free entry. Options are a work visa, a retirement visa, the five-year visa for remote work and long stays, the paid programme for wealthy foreigners and the ten-year Long-Term Resident visa.
- Rent a home and register your address. A lease and the notification of residence are needed for the tax number and the certificate.
- Get a tax number. The local Revenue Department office issues it on your passport, visa and lease. You need it as soon as you have taxable income.
- Open a Thai bank account. It shows what amounts were brought into the country and when: the basis for calculating tax on foreign income.
- Plan what money to bring in. Separate income earned before 2024 from later income and decide what to bring in during a year of residency.
- File a tax return. The annual return is filed by 31 March of the following year; the online deadline is a few days later.
- Request the residency certificate. The Revenue Department issues it after the return is filed and the tax paid.
- Close residency in your previous country. Check its exit rules: 180 days in Thailand do not automatically end residency there.
Tax residency certificate and double tax treaties
The tax residency certificate is issued by the local office of the Thai Revenue Department. The application is accompanied by the filed income tax return and the payment receipt, the tax number card and the passport with stamps used to count days. Processing takes about a month, and the office may ask for further income documents. The certificate is issued only to those who spent 180 days or more in the country.
Thailand has about 61 double tax treaties. The certificate is needed to reduce withholding tax in another country and to credit in Thailand the tax paid abroad.
The treaty with Russia has applied since 2009 and was not suspended in 2023: Thailand is not on the list of countries with which Russia froze such treaties.
What changes in your taxes once you are resident
A Thai resident pays income tax on a scale from 0% to 35%: the first $4,500 of annual income after deductions is tax-free, and the top rate applies to income above about $150,000. The scale applies to all Thai income and to foreign income brought into the country. A non-resident pays only on Thai income.
Since 1 January 2024 a resident pays tax on any foreign income brought into Thailand, whatever the year it is brought in; income earned before 2024 is not taxed when brought in. Money that stays in an account abroad is not taxed by Thailand. Holders of the Long-Term Resident visa in the categories for wealthy people, pensioners and remote professionals pay no tax on foreign income even when they bring it in. Below are the resident's rates by type of income.
| Income | Tax for a resident of Thailand |
|---|---|
| Foreign income | when brought in |
| Dividends | 10% |
| Interest | 15% |
| Capital gains | 0% or scale |
| Property sales | on appraised value |
| Crypto | 0% on Thai exchanges |
Crypto sold on licensed Thai exchanges is tax-free until the end of 2029.
All rates, business taxes and worked examples are on the page taxes in Thailand.
How to avoid becoming tax resident in two countries
The Thai rule is simple, while the rules of the country you are leaving are usually more complex. Many countries keep treating a person as resident because of a home, family or centre of interests even after more than 180 days in Thailand.
If both countries treat you as resident, the treaty settles it: first where your permanent home is, then your centre of vital interests, then where you habitually live, then citizenship. A rented villa in Phuket against a family and house in your previous country will most likely lose.
The practical rule: get the Thai residency certificate, leave your previous country's residency under its rules and keep bank records of when each large item of income was earned and brought in.
Restrictions for certain nationalities
Thailand's tax residency rules are the same for citizens of every country. Only entry conditions and treaties differ.
The visa-free period depends on citizenship and was shortened for most countries in 2026, so 180 days can only be reached on a long-stay visa. Income and age requirements for visas are the same for all nationalities.
Thailand's treaty with Russia remains fully in force, unlike those of many European countries: tax paid in one country is credited in the other.
US citizens are taxed on citizenship wherever they live: the Thailand-US treaty is in force, and Thai tax is credited against US tax under its rules.
Thai tax residency means 180 days, a long-stay visa and a plan for bringing money in
The law does not stop you from becoming a Thai resident on your own. But mistakes cost more than fees: a foreign salary or dividends transferred to a Thai card in a year of residency become taxable income; no return is filed and no certificate is issued; your previous country keeps treating you as resident. Murblz support removes these risks: Murblz specialists choose the visa, count the days, obtain the tax number, plan what money to bring in and when, prepare the return and obtain the residency certificate. We guarantee professional work and a transparent process, and in most cases a result on the first filing.
The cost of support depends on the visa and the make-up of your income; a manager will calculate it in the chat.
This topic in other countries
Tax residency in other countries:
- How to become a tax resident of Georgia in 2026
- How to become a tax resident of Kazakhstan in 2026
- How to become a tax resident of the UAE in 2026
- How to become a tax resident of Armenia in 2026
- How to become a tax resident of Monaco in 2026
- How to become a tax resident of Belarus in 2026
- How to become a tax resident of Turkey in 2026
- How to become a tax resident of Cyprus in 2026
- How to become a tax resident of Portugal in 2026
- How to become a tax resident of Spain in 2026
- How to become a tax resident of Singapore in 2026
Relocation, taxes and business in this country:
- taxes in Thailand
- moving to Thailand
- how to get residency in Thailand
- Thailand residence by contribution
- Thailand remote work visa
- retiring in Thailand
- Bangkok guide
- cost of living in Thailand
- crypto tax in Thailand
Count your days and compare countries:
- tax residency calculator: 183 days by travel dates
- taxes around the world: rates compared
- the 183-day rule in plain words
FAQ
How do I become a tax resident of Thailand?
How many days do I need to live in Thailand for tax residency?
Does wintering in Thailand make me a tax resident?
Does a Thai resident pay tax on foreign income?
How do I get a Thai tax residency certificate?
Which visas exempt foreign income from tax?
Do I need a tax number if I live in Thailand on foreign income?
How do I avoid being resident in two countries at once?
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