Sales Tax Calculator

Add or remove sales tax from any amount

$
Total price
$0
$0 tax

Sales Tax Calculator — guide & how to use

What it does

This sales tax calculator works both ways: add tax to a price to get the total, or remove tax from a tax-inclusive total to find the pre-tax price. It shows the subtotal, the tax amount, and the total for any tax rate — calculated privately in your browser, free.

How to use it

  1. Enter the amount and your sales tax rate.
  2. Pick a mode: add tax to the amount, or treat the amount as tax-inclusive.
  3. Read the total, with the subtotal and tax in the breakdown.

How to embed this tool on your website

No account, no coding. Copy the embed code and paste it where you want it to appear:

<iframe src="https://snaptoolsuite.com/sales-tax-calculator/?embed=1"
  style="width:100%;max-width:560px;height:820px;border:0;"
  title="Sales Tax Calculator" loading="lazy"></iframe>
<p>Free <a href="https://snaptoolsuite.com/sales-tax-calculator/">Sales Tax Calculator</a> by Snap Tool Suite</p>
2 Paste it on your page
3 It just works

See it live: view a real embed example →

Frequently asked questions

How do you calculate sales tax?

Tax = price × rate; total = price + tax. 8.5% on $100 is $8.50, total $108.50.

How do I remove sales tax from a total?

Use "Amount includes tax" — it divides the total by (1 + rate) to find the pre-tax price.

Is it really free?

Yes. 100% free, everything runs in your browser.

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🔒 Everything is calculated in your browser. We don't store or sell your data.