VAT Calculator

Adds VAT on top of a net price, or works backward from a tax-inclusive price to find the net amount and the tax portion.

Enter a net price and a VAT rate to add tax. To go the other way, tick "work backwards from final price" and enter the tax-inclusive amount instead.

A net price of 100 with 20% VAT adds 20 in tax, for a gross price of 120. In reverse, entering a gross price of 120 at 20% VAT gives a net price of 100 and a tax portion of 20.

Forward: tax = net price × rate / 100, gross price = net price + tax. Reverse: net price = gross price ÷ (1 + rate / 100), tax = gross price − net price.

VAT and sales tax rates vary by country and sometimes by product category — use the rate that applies to your specific invoice, purchase or jurisdiction.

This calculator applies a single flat rate — it doesn't handle mixed-rate invoices, reduced rates on part of a purchase, or region-specific exemptions.

Calculation runs locally in your browser; the values you enter are not uploaded.