Sales Tax / VAT Calculator
Add tax onto a tax-exclusive price, or work backward from a tax-inclusive total to see the base price and tax amount — enter any rate for any region.
To calculate sales tax or VAT, choose add or remove mode, enter your amount and tax rate — the base price, tax amount and total are calculated instantly.
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How to use Sales Tax / VAT Calculator
- 1Choose 'Add tax to price' or 'Remove tax from total'.
- 2Enter the amount and your tax/VAT rate.
- 3See the base price, tax amount and total instantly.
How it works
Add mode: taxAmount = price × rate; total = price + taxAmount. Remove mode: basePrice = totalPrice ÷ (1 + rate) — this is the correct way to extract tax from an inclusive price; simply subtracting the rate percentage from the total gives the wrong answer.
Frequently Asked Questions
Why can't I just subtract the tax rate from the total price?
Because tax is calculated on the base price, not the total — subtracting a straight percentage from the tax-inclusive total overstates the tax removed. Dividing by (1 + rate) is the mathematically correct method.
Is my financial data uploaded anywhere?
No. Every calculator on this site runs entirely in your browser — nothing you enter is sent to a server.
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