Sales Tax, VAT & GST Calculator - Add or Reverse
Calculate sales tax, VAT, or GST - add tax to a net amount or reverse it out of a gross amount
How it works
- 1Pick add or reverse
Add tax to a net amount, or reverse-calculate net and tax from a gross amount.
- 2Enter amount and rate
Type your amount and the tax rate (or tap a preset like HST 13%, VAT 20%, GST 10%).
- 3Read net, tax, and gross
All three values update instantly.
About Sales Tax, VAT & GST Calculator - Add or Reverse
Free sales tax, VAT, and GST calculator with two modes. Add mode: enter a net amount and rate to see the tax and gross total. Reverse mode: enter a gross (tax-inclusive) amount and rate to extract the net and tax portions. Includes presets for common rates worldwide - Canadian GST/HST, UK VAT, EU VAT, Australian GST, and Indian GST. Runs entirely in your browser. Sales Tax, VAT & GST Calculator - Add or Reverse on 712 Tools runs entirely inside your browser using modern JavaScript APIs - no server ever sees your data. That means instant results, complete privacy, and no upload limits.
Whether you need to calculate sales tax, vat, or gst - add tax to a net amount or reverse it out of a gross amount for a debugging session, a quick sanity check, or a production incident, this tool is free to use as many times as you need. There are no watermarks, no sign-up, and no ads inside the tool itself.
Frequently asked questions
What's the difference between GST, HST, VAT, and sales tax?
They are all consumption taxes on goods and services. Names vary by country: US uses sales tax (state-by-state); Canada uses GST and HST; the UK and EU use VAT; Australia and India use GST. The math is the same.
How do I calculate reverse tax?
Net = Gross ÷ (1 + rate ÷ 100). Tax = Gross − Net.
Is my data uploaded?
No. All calculations run entirely in your browser.
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