Thai Tax Residency and Property Purchase Funds: What Buyers Should Check

Updated 11 November 2026

Sending money to Thailand to buy a property involves two separate questions: what evidence is needed for the purchase, and how the source of those funds is treated for tax. Satisfying the bank or Land Office does not automatically resolve the tax question.

Identify the source and date of the funds

Keep records distinguishing savings, employment income, pensions, investment income, sale proceeds and borrowed funds. A bank transfer is not necessarily taxable income in its entirety, and describing a transfer as “savings” does not establish its treatment.

The Revenue Department's guidance distinguishes foreign income earned before 1 January 2024 from later foreign income. It also addresses residence in the year income was earned and remittance into Thailand. Have a qualified adviser apply the current rules to your circumstances, including any relevant treaty and foreign tax credit.

Count days and check the applicable tax year

Spending 180 days or more in Thailand in a calendar year generally makes an individual resident for Thai personal income tax purposes. The consequences depend on the income and applicable rules; residence does not make every transfer taxable, and non-residence does not remove tax on Thai-source income.

Treat proposals separately from effective rules

Do not schedule property payments on the assumption that a proposed exemption will become law. Ask your adviser to identify the enacted provision, effective date and conditions supporting any exemption you intend to use. A forecast, consultation or news report is not sufficient evidence.

Avoid delaying a contractual payment without first discussing the consequences with your lawyer and the seller. A possible future tax change does not alter the payment obligations you have already accepted.

LTR benefits depend on category and conditions

The Long-Term Resident programme includes different categories with different requirements and tax benefits. The BOI distinguishes overseas-income exemptions for specified categories from the employment-income concession for qualifying Highly-Skilled Professionals. LTR status is not a blanket exemption for every holder and every kind of income.

Keep a transaction file

Retain source-of-funds records, evidence of when income arose, bank transfer documents, residency-day records, tax returns, advice received and the property payment schedule. Ask your bank and lawyer which purchase documents are required before transferring the funds.

Phuket Realtor can provide available property documents and payment information. Your independent tax adviser should confirm how the funding arrangements affect you.