Sales Tax Calculator
Add tax to a pre-tax price, remove tax from a total, or find the tax rate between two prices. Supports any tax rate. 3 modes in one clean calculator.
✅ Free 🧾 3 Modes ⚡ Instant 🔒 Private
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Sales Tax CalculatorAdd Tax to Price
Remove Tax from Price
Find Tax Rate
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3 Tax Modes
Add tax to price, remove tax from total, or calculate the rate from two prices.
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Instant Results
Tax amount and totals shown as you type.
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Any Tax Rate
Works for US sales tax, VAT, GST or any percentage-based tax.
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Private
Calculations run in your browser. Nothing stored.
⭐ User Reviews
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Alex T.
Yesterday
⭐⭐⭐⭐⭐
Exactly what I needed — clean inputs, instant results, and the breakdown shows the working so I can double-check. Bookmarked.
Calculator ToolsS
Sara K.
2 days ago
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I use this every week for my freelance invoicing. The copy buttons save so much time when pasting into spreadsheets.
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Dan M.
1 week ago
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No ads cluttering the page, no sign-up wall. Just enters the numbers and get the answer. Refreshingly simple.
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Laura B.
2 weeks ago
⭐⭐⭐⭐⭐
The formula explanation below the result is a great learning aid. I now understand the maths behind what I was calculating.
Calculator Tools📖 How to Use
1
Choose mode
Select Add Tax, Remove Tax, or Find Rate.
2
Enter amounts
Fill in the price and tax rate (or both prices for rate-finding).
3
Read results
Pre-tax, tax amount and total displayed with copy buttons.
4
Switch modes
Use the tabs to switch between the three calculation types.
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❓ FAQ
How do I calculate sales tax on a price?+
Sales tax amount = Pre-tax price × (Tax rate ÷ 100). Total = Pre-tax price + Tax amount. For $100 at 8.5% tax: tax = $8.50, total = $108.50.
How do I remove tax from a price to find the pre-tax amount?+
Pre-tax price = Total price ÷ (1 + Tax rate ÷ 100). For $108.50 including 8.5% tax: pre-tax = $108.50 ÷ 1.085 = $100.
What is the difference between sales tax and VAT?+
US sales tax is added at the point of sale and shown separately. VAT (Value Added Tax) in Europe is included in the displayed price. Both use similar percentage calculations but differ in how they appear on invoices and receipts.
What states have the highest sales tax?+
Combined state + local sales tax rates vary widely in the US. Louisiana (~9.5%), Tennessee (~9.5%) and Arkansas (~9.4%) rank among the highest. Some states have no sales tax (Oregon, Montana, New Hampshire, Delaware, Alaska).
Is sales tax the same as GST?+
They are similar concepts. GST (Goods and Services Tax) is used in Canada, Australia, India, New Zealand and others. US sales tax and GST/VAT all involve adding a percentage to prices — the calculation method is the same.