Tax calculator

Thailand VAT Calculator

Add Thailand VAT to a price before tax.

Last reviewed: 14 September 2026

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Calculation result
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Calculated in your browser. Values are not sent to ThaiUtility.

Quick answer

Enter the pre-VAT price and selected rate to see VAT and the inclusive total.

Formula

VAT = price before VAT × rate ÷ 100; total = price before VAT + VAT.

Worked example

10,000 baht at 7%

VAT is 700 baht and total is 10,700 baht.

Choose this tool when

Use this page when the amount before VAT is known. If the only known figure already includes VAT, use Reverse VAT instead.

Assumptions and limitations

  • Confirm that VAT applies.
  • VAT 0%, VAT-exempt, and a non-registered seller are different statuses.
  • This is not tax advice.

Official sources

Last reviewed: 14 September 2026

Review again when the responsible authority changes the rule, rate, or effective period, or when this calculator's assumptions change.

Check the current Thai text and effective dates before relying on a result for tax, billing, employment, or legal purposes.