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Thai stamp duty estimator

Estimate Thai stamp duty for four explicitly supported instrument types.

Limited scopeHigh-impactRevenue Code stamp-duty schedule · Four instrument types
Saves this tool's name on this device only (up to 20). No form values.
Only visible result text is included. Form fields are not read. Review sensitive values before sharing.

Covers four listed instrument types only. Exemptions, timing, payment method and whether a document is legally chargeable require separate checking.

Enter values, then process to see the result.

How to use it

  1. Confirm that the stated scope applies.
  2. Enter the checked base and select the applicable option.
  3. Review the breakdown, source and exclusions.

Important limitation

A preliminary calculation only; it does not determine chargeability, exemptions, deadlines or payment method.

The interactive form is fully localized in English.

Reviewed 2026-09-16; next review 2026-12-16.

Rates, upward unit boundaries and the supported loan cap have been checked against the Revenue Department schedule. Chargeability, exemptions, timing and payment method are excluded.

Sources

บัญชีอัตราอากรแสตมป์กรมสรรพากร · opens in a new tabInstrument entries 1, 3, 4 and 5, including rates, upward units and the loan cap.Source checked 2026-09-16
Traceable review record

Review history

Site changelog

This is the recorded review history available in the repository, not an inferred release history. Dates are added only when evidence is recorded.

  1. Current review snapshot recorded

    Rates, upward unit boundaries and the supported loan cap have been checked against the Revenue Department schedule. Chargeability, exemptions, timing and payment method are excluded.

    Method version: review-2026-09-16

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