Thailand income tax for foreigners 2026: Rates, exemptions and more

If you live and work in Thailand, or if you’re a Thai resident deriving income from another country, it’s important to understand the rules on Thailand’s income tax for foreigners. The tax you pay can depend on your situation, the amount earned, and your residency status - and rules around remitting foreign earned income to Thailand have recently been under review, which may mean further changes are afoot.

This guide runs through the basics of Thailand’s foreign worker income tax to help you get a feel for the process of filing and paying tax in Thailand as a foreigner. We'll also introduce Wise, a handy companion to make your money go further with low, transparent fees.

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Are foreigners subject to income tax in Thailand?

If you’re earning an income from employment, assets, rental or other sources while in Thailand, the chances are that you’ll need to report your income to the Thai Revenue Department (TRD)¹. Depending on your situation and the amount involved you may need to pay income tax in Thailand.

Whether or not you need to pay personal income tax (PIT)² in Thailand depends on several factors. As a foreigner in Thailand you’ll first need to establish if you’re a resident of Thailand for tax purposes, or considered non-resident. Generally you’re a resident for tax if you live in Thailand for a period or periods adding up to more than 180 days in any tax year. The Thai tax year is the same as the calendar year, January to December.

If you’re a Thai tax resident you will need to pay tax in Thailand on all income no matter where it is sourced. If you’re not considered a tax resident you’ll need to pay tax on income derived from Thailand only. You can file tax individually or as a married couple if you’d prefer³ It’s helpful to know that there have been recent changes to the rules on income earned abroad and remitted to Thailand, which we’ll look at in a moment.

Bear in mind that as a foreigner in Thailand you may have obligations outside of Thailand when it comes to tax as well. You might need to report income or pay taxes in your home country, or in any other country you earned money in, for example.

Thailand foreign income remittance tax amendment

There’s currently (January 2026) legislation being assessed in the Thai Revenue Department regarding changes to Thailand’s foreign income tax exemptions.

In January 2024, new rules were brought in which meant that any income earned overseas and remitted to Thailand may be subject to progressive taxes there. This is a change from previous laws which only taxed income remitted to Thailand in the same year it was earned.

At the time of writing, these rules are under review, and the reported changes could mean that you can remit money from overseas to Thailand in the year it’s earned, or the following year, without being subject to Thai tax. This rule would apply to Thai tax residents, and is aimed to encourage investments in the domestic economy.

As the law is being assessed, and may change or evolve in future, it's crucial you take personal advice from a tax lawyer or other specialist to understand how this may apply in your own case.

What’s the difference between income tax for foreigners and locals?

If you’re considered a tax resident in Thailand you will pay tax on globally sourced income, while foreigners who are not considered tax residents of Thailand only pay tax on income earned from Thai sources.

One important difference to note is that foreigners may be obliged to get a tax clearance certificate⁴ before being able to leave the country after working in Thailand. You must apply for this at least 15 days before you plan to leave, even if you do not owe any tax. This serves as proof you’ve fulfilled your duties in Thailand before you move away.

Penalties for failing to have a tax clearance certificate can be a fee of 20% of the tax owed, a fine or even imprisonment.

What are the personal income tax rates for foreigners?

Thailand has a progressive income tax system. The Thailand personal income tax rates in 2026 are as follows⁵:

*Data taken from PwC tax summary - Thailand - 6th January 2026

Nb this is the live info from the Thai tax authorities website, but it's for 2013/14. All other online sources seem to have updated tables, so I have used PwC as a reputable source instead, as their table reflects other secondary sources

How to calculate net income tax?

To calculate the tax you must pay in Thailand you’ll need to calculate your taxable income and then apply this to the progressive tax rates shown above.

Thailand has many deductions which can be applied to calculate your taxable income, which means you’ll need to work out your taxable income as follows:

Assessable income - deductions - allowance = taxable income

Deductions and allowances can include the following -

• Deductions for certain types of income
• Allowances for children and parents you care for
• Allowances for costs of education
• Allowances for life insurance
• Allowances for mortgage interest and pension contributions
• Allowances for charitable donations

The system of deductions and allowances, and the process to calculate your taxable income can be complicated and may not be familiar if you’re a foreigner in Thailand. Having a professional advise you on your duties and options may make the process far easier to navigate.

How to declare foreigner income tax in Thailand?

You’ll need to file a tax return to the Thai Revenue Department to confirm your income and earnings and any taxes you need to pay. There can be penalties for submitting late or incorrectly, so getting professional support is common for expats.

Requirements for income tax declaration in Thailand

The Thai tax year runs from January 1st to December 31st. You are usually required to file your taxes by the end of March in the year following the tax year in question. Slightly different rules may apply if you run a business, such as working as a freelancer for a Thai registered entity.

Are there any income tax exemptions for foreigners?

Aside from the process of using deductions and allowances to calculate your taxable income, foreigners earning income outside of Thailand may also benefit from checking if there’s a double taxation agreement⁶ between their home country (or the country they are earning money in) and Thailand.

Double taxation agreements exist to ensure you won’t pay tax on the same income twice. If you've already paid tax on foreign income in the country it was derived from, you may be able to offset any amount of tax owed in Thailand against this if there’s a double taxation treaty between the two countries. This can lower your overall tax burden. Because tax is complicated - especially when working across countries - getting professional advice can make sure the process runs smoothly and you comply with your obligations in Thailand and in any other countries you may owe taxes.

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