Sales Tax Calculator

Add sales tax to a price, or extract the tax already baked into a total.

100% in your browser · No uploads
Price before tax$100.00
Tax amount$8.88
Total with tax$108.88

What this does

Sales Tax Calculator adds tax to a pre-tax price, or extracts the tax already baked into a tax-inclusive total. Works with any sales tax rate — VAT, GST, HST, or US state rates.

When to use it

  • Adding tax to a quote before sending it to a customer
  • Working out the pre-tax cost from a receipt that shows only the total
  • Comparing prices in countries where tax is included vs. added at checkout
  • Verifying the tax amount on an invoice matches the rate you expect

Frequently asked

How do I find my local tax rate?

Search '[your city] sales tax rate' — US rates vary by state, county, and city. EU VAT and Canadian GST/HST are usually a single national or provincial rate.

Does it support compound tax (tax-on-tax)?

No — the calculator assumes a single rate. For jurisdictions with stacked taxes (e.g. Quebec GST + QST), run the tool twice in sequence.