2026 Tax Return Filing in Thailand
Navigating Personal Income Tax Obligations for Expats in Thailand with Clarity and Compliance.
The season for filing personal income taxes in Thailand has now arrived.
Thai taxpayers have the right to report their income to the Revenue Department from 1 January to 8 April 2026. It is useful to know how much money you made in Thailand between January 1 and December 31, 2025.
Are you a tax resident in Thailand?
A person who spends 180 days or more in Thailand during a calendar year is considered a Thai tax resident according to Thai tax law. Keep in mind that each day will count as one no matter what time you enter or leave Thailand. For tax purposes, a tax year that you are a resident in is treated as a full year. Keep a copy of your passport on hand to confirm this.
Submitting your tax return
Personal income tax returns must be filed electronically by 8 April, but hard copies must be received by the Revenue Department by 31 March. The Revenue Department’s website, https://efiling.rd.go.th/rd-cms/, is where individuals can file their personal income tax returns.
In order to file a hard copy personal income tax return using form PND 90/91, taxpayers must do so at any Revenue Department Area Office along with any additional tax that is owed in cash, by cashier’s check, or by QR code, and that must be paid within 8 April. The deadline is March 31; after that, late filers will be charged an additional 1.5% monthly surcharge (or fraction thereof) on top of the unpaid tax. Those who apply will have access to interest-free installment payment plans for up to three months. The penalty for submitting documents late is THB 200.
When submitting your Personal Income Tax Returns (PND 90, 91), please make sure that the correct taxable income has been reported. This includes income from all sources in Thailand (especially those connected to your Thai employment), regardless of where it came from or whether you are a Thai resident, as well as income from abroad brought into Thailand in the same tax year.
The tax rates range from 0% to 35% for both residents and non-residents. The distinction between residents and non-residents will be discussed in more detail below.
Income from abroad
The “Residence Rule” states that if you are a Thai tax resident and bring such foreign income into Thailand in the same year it is earned, Thailand will tax you on it. It might also be related to your employment abroad.
If you plan to bring in foreign income like capital gains, rental income, or interest income into Thailand before you begin working in the Kingdom, please think it through carefully before you do. Non-residents, however, are permitted to bring in such foreign income without being subject to Thai taxation.
Deductions for dependents
An individual who has no income during a tax year is considered a dependent. Children and spouses who reside abroad can also be considered dependents.
If you are a Thai resident, you can claim a family allowance deduction for your dependent spouse and up to three dependent children.
To qualify for this allowance, you must give the Revenue Department a copy of your entire passport—from front to back, including the blank pages—that you used for travel during the tax year, as well as a marriage certificate and/or copies of any children’s birth certificates.
If you can demonstrate that your children are students—for example, by providing a copy of a tuition fee receipt—you may be able to claim them as dependents for tax purposes. For instance, it may be deducted from your taxes if your child qualifies as an incompetent person or a quasi-incompetent person and is 25 years of age or older during the tax year.
If your dependents are Thai citizens, you can still claim these deductions even if you are not a Thai resident by giving the Revenue Department copies of their entire passports, front to back, including the blank pages.
Tax reduction
Let’s look at some legal ways that foreign workers can lower their tax obligations, starting with the different deductions that will be available in 2022.
- Up to THB 60,000 can be claimed by the taxpayer.
- The taxpayer’s spouse is eligible for THB 60,000 Baht under the proviso that the union must be legally recognized and that the spouse has to be unemployed.
- Up to THB 30,000 can be claimed by the taxpayer, which is limited to 3 children.
- Due to the social security rate reduction in 2025, the social security fee shall be applied as a tax deduction based on the actual paid amount of no more than THB 9000.
- According to the actual paid amount of not more than THB 100,000, life insurance premiums and savings insurance premiums may qualify for a tax deduction under the following circumstances:
- Must have 10 years or more of insurance coverage with a Thai life insurance company, and the insurance cannot be surrendered during the first 10 years. If that is the case, it will be regarded as a breach and not eligible for a tax deduction.
The maximum tax deduction for the spouse’s insurance premiums is THB 10,000 if there is no income from the spouse.
- Investment in Thai ESG, Thai ESGX, and ThaiESGX Fund through switching from LTF units: Provide Fund Statement / Confirmation of Transaction from the asset management company within the eligible period (Maximum of 30% of income and up to 300,000 Baht).
- Pension Insurance Premiums: Contributions to pension plans may be deducted (up to 200,000 THB or 15% of income, whichever is less).
- Home Loan Interest: If applicable, provide documents showing interest paid on home loans from Thai banks, which can also be deducted.
- Shopping bill between 16 Jan – 28 February 2025: all tax invoices mention your name, address, and Tax ID.
- Domestic Travel Expenses (Main Cities / Secondary Cities) between 29 October – 15 December 2025: Please provide tax invoices or official receipts issued by a licensed accommodation provider or restaurant.
- Spouse Allowance (60,000 THB): If your spouse has no income or earns less than 30,000 THB per year, please provide a marriage certificate, copy of passport, and visa.
- Child Allowance (30,000 THB per child): If your child is under 25, studying, and has no income, please provide a birth certificate, copy of passport and visa, and marriage certificate.
- Parental Allowance (30,000 THB per parent): If your parents are over 60 years old, have no income or earn less than 30,000 THB per year, and have a Thai ID card, please provide a copy of their Thai ID card.
- Care of Disabled Persons (60,000 THB): If you care for a disabled person, please provide their disability card.
- Social Security Contributions: Please provide receipts for any contributions you’ve made to Thailand’s social security system, as these may be deducted.
Tax deduction from donations
- Donations to charitable, educational, and religious organizations that does not exceed 10% of annual net income
- Donations to state hospitals, schools, sports teams, and other charitable organizations are tax deductible up to two times the amount of the donation, but not more than 10% of gross income after other deductions.
- Donations to political parties are tax deductible up to a maximum of THB 10,000.
Tax deduction from immovable property
A tax deduction of up to THB 100,000 can be claimed for loan interest on residential property purchases.
Other tax deductions such as the government’s economic stimulus program
The Shop Dee Mee Kuen Project 2565 allows a maximum deduction of THB 30,000 for purchases of goods and services in the country between January 1 and February 15, 2565, based on the actual paid amount. Goods and services subject to Value Added Tax (VAT) such as OTOP products and books (including e-books), are examples of tax-deductible goods and services.
The following are deductible for those with a Thai dependent spouse:
1. Life insurance premiums of up to THB 10,000 per year for the spouse.
2. An amount up to THB 30,000 for each dependent parent of the spouse.
3. Up to THB 25,000 in annual health insurance premiums for you and your spouse’s parents if they are covered by a Thai plan.
Remark: If you receive income from a foreign source and bring it into Thailand, you must show a receipt proving that you already paid tax on it so that Thailand can credit your account for it.
If you have any questions related to tax in Thailand, please do not hesitate to contact us at [email protected]
Fabian Doppler
Fabian is a founding partner of FRANK Legal & Tax. He focuses his practice on corporate / commercial and real estate law, as well as litigation. He is admitted to the Bar of Stuttgart, Germany, where he actively practiced law before coming to Thailand in 2005.
