GST / Sales Tax Calculator
10 toolsAdd or remove tax from a price.
Runs in your browser — your files and text stay on your device
Add tax to a price or remove it from a tax-inclusive price, using GST or a sales tax rate you enter. Use it to find the pre-tax amount from a receipt or the total you'll pay. Tax rules vary, so check the rate that applies to you.
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Base amount
1,000
Tax amount
180
Total
1,180
How to use this tool
- 1Choose Add tax or Remove tax.
- 2Enter the amount and tax rate (e.g. GST, VAT, sales tax).
- 3See the base, tax, and total update instantly.
Frequently asked questions
What's the difference between add and remove?
Add tax takes a pre-tax amount and adds tax on top. Remove tax takes a tax-inclusive amount and works backward to find the base.
Does this work for any tax rate, not just GST?
Yes — enter any percentage for VAT, sales tax, or GST in any country.