Sales tax and VAT calculator

Add tax to a price, or work backwards from a total. Type your tax rate and see the price before tax, the tax and the total.

I want to
Price before tax
100.00
Tax
10.00
Price including tax
110.00

Adding and removing tax

To add tax, multiply the price by 1 plus the rate. At 10%, that is 1.10. To take tax out of a total, divide by the same number.

The tax inside a total is not the rate times the total. At 10%, a $110 total holds $10 of tax, not $11.

Common questions

What is my tax rate?

It depends on where you work and what you sell. Look up the current GST, HST, VAT or sales tax rate with your tax office, and check whether a different rate applies to your type of work.

Does this work for GST, HST and VAT?

Yes. They all work the same way. Type your rate and choose whether to add tax or take it out. Where a separate local or provincial tax also applies, work that out on its own.

Do I have to charge tax?

Only if you are registered, or required to register, where you work. Registration thresholds differ by country, so check with your tax office. Our guides cover the rules for Canada and Australia.