Sales Tax Calculator

Add tax to a price, or take it out of a total. Works for VAT, GST, HST and sales tax.

Result

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Before tax
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Tax
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With tax
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How this was calculated
Runs in your browser. Nothing you type is sent anywhere.
Run on many
Add or remove tax on a whole list of amounts at once. Upload a CSV with an amount on each row. Free for up to 10 amounts; Pro runs up to 10,000 at once.
Download a sample CSV to see the format.
Your file never leaves your device. Every row is calculated in your browser.
About the Sales Tax Calculator
Sales Tax Calculator adds tax to a price, or takes it out of a total that already includes tax. It works the same for VAT, GST, HST and US sales tax: only the rate changes.
Removing tax is where people often go wrong. You can't just subtract 13% from the total, because the tax was 13% of the smaller pre-tax amount.
How to use it
  1. Enter the amount.
  2. Enter the tax rate, such as 5% GST, 13% HST or 20% VAT.
  3. Say whether the amount already includes tax.
  4. Read the amount before tax, the tax and the total.
Example
Adding 13% HST to $100.00 gives $113.00, of which $13.00 is tax. Removing 13% from $113.00 gives back $100.00 before tax.
Questions
How do I remove tax from a total?
Divide by (1 + rate). For 13%: $113.00 ÷ 1.13 = $100.00. Subtracting 13% of $113 would give the wrong answer, $98.31.
Which rate should I use?
It depends on where the sale happens. In Canada, for example, it's 5% GST in Alberta and 13% HST in Ontario. Check your own tax authority for the rate that applies.
Can I do a whole list of amounts?
Yes. Run on many takes a CSV of amounts and adds or removes tax on every row.