Thai withholding tax calculator
Estimate withholding tax and the net payment.
How to use it
- Identify the payment type and the rate that applies to the actual payer and recipient.
- Enter the gross payment and applicable withholding rate.
- Review the withheld amount, net payment and cited Revenue Department source.
Important limitation
You must choose the legally applicable rate from the transaction facts; this tool does not classify the income or replace tax advice.
The interactive form is fully localized in English.
Reviewed 2026-09-23; next review 2026-12-23.
The Revenue Department order and percentage arithmetic have been checked. You must still select the rate from the payer, recipient and income facts.
Review history
This is the recorded review history available in the repository, not an inferred release history. Dates are added only when evidence is recorded.
- Rejected non-finite numeric inputs
Added validation and regression coverage for NaN and Infinity while leaving rate selection to the user's transaction facts.
- Current review snapshot recorded
The Revenue Department order and percentage arithmetic have been checked. You must still select the rate from the payer, recipient and income facts.
Method version: review-2026-09-23