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VAT from a tax-inclusive amount calculator

Enter an amount that already includes VAT and the tax rate. The calculator extracts the tax amount itself and the amount excluding VAT.

Result

VAT amount

—

Amount excluding VAT —

Your inputs are stored in this browser, so everything is still here next time. Nothing is sent to a server.

This calculation is for informational purposes only and does not replace advice from a qualified professional. Formulas and rates may not fit your exact situation — double-check the figures before making decisions.

How it is calculated

VAT amount = tax-inclusive amount × rate ÷ (100 + rate). Amount excluding VAT = tax-inclusive amount − VAT amount. The formula differs from simply multiplying by the rate precisely because the rate here doesn't apply to a tax-exclusive base — it's already embedded inside the tax-inclusive total, so directly multiplying the total by the rate would overstate the result.

This task comes up often when you know the final price shown to a buyer (e.g. a retail price tag) and need to work out how much of it is tax versus the seller's tax-exclusive revenue.

If instead you have a tax-exclusive amount and need to add VAT on top, this formula won't work — use the separate VAT calculator, where the tax is simply multiplied by the rate and added.

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