How to calculate VAT or sales tax

Multiply the price before tax by the tax rate divided by 100. Add the tax amount to the original price to find the total price including tax.

Example:
Price before tax = $100
Tax rate = 16%

$100 × 16 ÷ 100 = $16
$100 + $16 = $116

Tax = $16
Price including tax = $116

​

When would you use a VAT or sales tax calculator?

A VAT or sales tax calculator helps you work out how much tax is added to the price of a product or service and the total amount payable after tax. It is useful for purchases, invoices, quotations, business expenses and comparing prices before and after tax.

​

For example, if an item costs $200 before tax and the tax rate is 16%, the tax amount is $32 and the total price including tax is $232.

​

Important: VAT and sales tax rates vary between countries and regions. Always use the tax rate that applies to your particular purchase or transaction.

​

Related calculation: If you want to work backwards from a price that already includes VAT or sales tax to find the original price, use our Reverse Percentage Calculator.