VAT & Sales Tax Calculator

Add or remove tax at any rate in one step. Enter an amount and your VAT or sales-tax rate, and this splits out the net, the tax and the gross — no mental maths.

Need more than the free basics? Calculating tax is the easy part; tracking what you owe and getting paid is the work. A payments tool like Melio helps you send invoices, pay bills and keep it all straight.

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Adding vs extracting tax

If you have a net (pre-tax) price and need the total, you add tax. If you have a gross (tax-included) price — like a receipt total — and need the tax portion, you extract it, which isn't just subtracting the percentage. This tool handles both. Rates and rules vary by country and product, so always confirm the correct rate for your situation.

Frequently asked questions

How do I work out VAT from a gross price?

You can't just subtract the percentage. Divide the gross by (1 + rate), e.g. gross ÷ 1.21 for 21% VAT, to get the net — this tool does it for you.

What's the difference between VAT and sales tax?

VAT is charged at each stage of the supply chain (common in Europe); US sales tax is added once at the final sale. The maths here works for both.

Which rate should I use?

It depends on your country and what you're selling. Check your local tax authority — this tool applies whatever rate you enter.

This tool is free and runs entirely in your browser. The link above is an affiliate link: we may earn a commission if you sign up, at no extra cost to you, and it never changes our honest take.