Calculate sales tax or VAT in seconds
Enter an amount and a tax rate — we show the net subtotal, the tax portion, and the tax-inclusive total. Works offline in your browser, with any currency you need.
Tax calculator
Your calculations happen entirely in your browser. No financial data is uploaded or stored on our servers.
Frequently asked questions
How do I add sales tax or VAT to a price?
Multiply the net price by the rate expressed as a decimal, then add the result to the net price.
For a net price of 10,000 and a 7.5% rate: tax = 10,000 × 0.075 = 750, so the tax-inclusive
total is 10,750. The shortcut is total = net × (1 + rate/100).
How do I remove tax from a tax-inclusive amount?
Divide the gross amount by 1 + rate/100. For 10,750 at 7.5%:
net = 10,750 ÷ 1.075 = 10,000, and the tax portion is 10,750 − 10,000 = 750.
Do not simply subtract 7.5% of the gross amount — that is 7.5% of the total
rather than of the net, and it gives a slightly wrong answer (10,750 − 806.25 = 9,943.75).
What is the difference between sales tax and VAT?
Sales tax is usually charged once, at the final retail sale, and is added on top of the shelf price (common in the United States). Value Added Tax is charged at every stage of production and distribution, with businesses reclaiming the tax they paid on inputs, and prices are normally shown inclusive of tax (common in Nigeria, the UK, the EU and much of the world). Mathematically, for a single purchase the add-tax / remove-tax arithmetic is the same.
Why does my tax-inclusive total not match the sum of the rounded figures?
Money is displayed to two decimal places, but the calculation is done at full precision and rounded once at the end. On very large amounts or rates with many decimals, the displayed tax and displayed subtotal can differ from the displayed total by one cent/one kobo. Invoices are normally reconciled line by line, so for accounting purposes follow your local rounding rules and your invoicing software.
Is my data saved anywhere?
No. This is a static page with no backend, database or user accounts. Numbers you type are processed by JavaScript running on your device and are cleared from memory when you reload the page. We only use your browser's local storage to remember two cosmetic preferences: your light/dark theme and whether you have dismissed the cookie notice. See the Privacy Policy for details, including advertising cookies.