General tools
VAT and sales tax calculator
Add tax to a net price or strip it back out of a gross price, at any rate. Everything runs in your browser - nothing is uploaded.
How it works
VAT (value-added tax) and sales tax both add a percentage to a price, and this tool works in both directions. In "add tax" mode you enter a net (pre-tax) price and a rate, and it shows the tax and the gross (tax-inclusive) total. In "remove tax" mode you enter a gross price that already includes tax and it works backwards to the net price and the tax portion - the calculation you need from a receipt or an invoice that only shows the final figure.
Removing tax is not the same as subtracting the rate: a 20% gross price is the net plus 20% of the net, so the net is the gross divided by 1.20, not the gross minus 20%. The tool handles that for you. Quick chips cover common rates and you can type any rate yourself. The amounts are currency-agnostic, so the same tool works for euros, pounds, or dollars, and everything runs in your browser - nothing is sent to a server.
Example. Add 20% to a net price of 100 and you get 20 tax and a gross of 120. Switch to remove tax, enter a gross of 120 at 20%, and it returns to a net of 100 with 20 of tax - not 96, which is the common mistake of just subtracting 20%.
FAQ
How do I add VAT to a price?
Multiply the net price by the rate and divide by 100 to get the tax, then add it on. At 20%, a net price of 100 carries 20 of tax for a gross of 120. The "add tax" mode does this as you type.
How do I remove VAT from a gross price?
Divide the gross price by 1 plus the rate as a decimal: at 20% that is gross / 1.20. So a gross of 120 has a net of 100 and 20 of tax. Subtracting 20% of the gross instead would be wrong, because the tax was charged on the smaller net amount.
What is the difference between VAT and sales tax?
They achieve a similar result - a percentage added to a price - but VAT is collected in stages along the supply chain and prices are often shown tax-inclusive, while US sales tax is added at the till and prices are usually shown without it. The arithmetic in this tool is the same for both; just enter the rate that applies to you.
Is my data sent anywhere?
No. Every calculation runs locally in your browser with plain JavaScript. Nothing you enter is uploaded, logged, or stored on a server.