Personal Income Tax Payment Deadline

March is coming to an end, which means the deadline for personal income tax payment in Thailand is approaching.

Previously, we explained the progressive tax rates and how tax is calculated for those receiving salaries in Thailand. We remind you that the tax depends on the amount of income. The employer withholds tax from the employee’s salary each month and pays it to the tax authority. This is withholding tax. By March 31 of the year following the reporting year, a general tax return must be filed. This includes calculating the total tax due, accounting for withholding tax already paid, and either paying the difference or, in some cases, receiving a refund of overpaid tax.

Withholding tax applies not only to salaries but also to other types of income.

For example, when a company pays rent to an individual landlord, it must withhold 5 percent and pay it to the tax authority. At the end of the year, this withheld tax is credited toward the individual’s total tax liability, just like salary withholding.

Please note that when calculating total tax payable, all income received by an individual during the year is taken into account. Each type of income is subject to applicable deductions and allowances. This determines the taxable base to which the tax rate is applied.

For all questions related to personal taxation in Thailand, please contact +66 87 348 5703.