Tax Calculator
Calculate tax amount and total price for any rate and base value. Add tax to a price, extract tax from a gross amount or compare multiple rates.
🧮 Math & Finance Tools
Free
Browser-based
Common rates: 5%7.5%10%15%20% VAT21%
Tax Calculation Modes
Add Tax: You have a price excluding tax and want to know the total with tax. Remove Tax (reverse / back-calculate): You have a tax-inclusive price and want to separate the base price from the tax amount. Compare Rates: See the tax-inclusive price for a base amount across multiple common tax rates.
Common Tax Rates
| Country / Region | Tax | Rate |
|---|---|---|
| United Kingdom | VAT (standard) | 20% |
| Germany / France | VAT | 19% / 20% |
| Australia | GST | 10% |
| Canada (federal) | GST | 5% |
| USA (avg sales tax) | Sales tax | ~7–10% |
| India | GST | 5%, 12%, 18%, 28% |
Reverse Tax Formula
To extract tax from an inclusive price: Tax = Gross × Rate / (100 + Rate). For example, the VAT in a £120 price at 20%: £120 × 20 / 120 = £20 tax, £100 net.