Thailand tax calculator 2023 (Download)
Download the free Thailand tax calculator and calculate your personal income tax accurately and with ease. No more dreading seeing your tax bill! Available for both Excel (Win, Mac) and Numbers (Mac).
The downloads are contained in a .zip file and are best downloaded on a computer rather than a mobile device. The Excel version suitable for both Windows and macOS, the Numbers only for macOS.
How to use the Thai tax calculator
Calculating your personal income tax in the calculator is easy. Here’s how to use it.
In the spreadsheet, all fields that require your input have a grey background. On the other hand, all white fields do the calculations automatically and are best left alone (unless you want to change the formulas).
The fields you will have to fill in with your information are:
Gross income
Type in your monthly income before any deductions are taken.
Withholding tax
Tax applied to employment income and can amount to 5-35% of your monthly salary. The deducted amount goes directly to the government. It counts toward your yearly tax liability, meaning you contribute to your total tax bill each month.
Social security
It is an amount paid to the Social Security Fund and makes up 5% of monthly income but no more than 750 THB.
Expenses and savings (voluntary)
With monthly expenses filled in, you can get a clear picture of where your money goes and how much you were able to save.
Deductions and allowances
These are trickier to tell and depend on your personal situation, for example, whether you are married and have kids or your income type. For completeness, you can find a list of all possible deductions and allowances in a previous post on reducing income tax.
Tax calculation
The last step – calculating your tax – happens automatically. At the bottom, you will see the total tax due and the amount your employer has withheld from you. These two numbers are then added up.
If the total is positive, you owe tax and will need to pay the remaining balance. In case of a negative result, you have overpaid. You can get your money back from the Revenue Department when filing your taxes – this is called a tax refund.
How is personal income tax calculated in Thailand?
For example, if your taxable income after all deductions was 1,400,000 THB, your tax rate table would look as follows:
| Taxable income (THB) | Tax rate | Income in the bracket | Tax (THB) |
|---|---|---|---|
| 0 to 150,000 | Exempt | 150,000 | 0 |
| 150,001 to 300,000 | 5% | 150,000 | 7,500 |
| 300,001 to 500,000 | 10% | 200,000 | 20,000 |
| 500,001 to 750,000 | 15% | 250,000 | 37,500 |
| 750,001 to 1,000,000 | 20% | 250,000 | 50,000 |
| 1,000,001 to 2,000,000 | 25% | 400,000 | 100,000 |
| Total tax | 250,000 | ||
| Effective rate | 17.86% |