Set the inputs
Choose calculation from the pre-withholding fee or gross-up from a desired net amount. Enter a rate verified for the payment type.
Withholding and gross-up
Calculate withholding and gross-up with an explicitly chosen rate, separating VAT from the intended net amount.
Calculated in your browser. Income and results are not saved or transmitted.
3% and 7% are editable examples, not rates for every contract. Withholding uses the pre-VAT base. Base and tax round to satang, half up; any target difference is shown. No tax certificate is issued.
How to use this calculator
Check the terms
Separate the service base from VAT and check whether the target net includes VAT. Example rates do not apply to every payment.
Read the result
Read fee, VAT, withholding and transferred cash separately. For gross-up, check the difference caused by satang rounding.
A worked example
Illustrative calculation
A 10,000 THB fee with assumed 3% withholding and 7% VAT gives 300 THB withheld, 700 THB VAT and 10,400 THB transferred.
Compare a second scenario
Compare a 10,000 THB gross fee with a 10,000 THB net target at the same rate. Gross-up changes the fee base.
Common questions
Where does my information go?
Calculations run in your browser. Financial inputs are neither saved locally nor sent to analytics. Reloading restores the initial values.
What are this model’s limitations?
The calculator does not determine the legally applicable rate, issue a certificate or establish that withholding is final tax.