Country presets are standard EU/UK VAT rates for reference; confirm the exact rate and treatment for your jurisdiction. Amounts stay in this browser.
Calculation details
Planning estimate only. Platform fees, taxes, payment costs, and policies can change; verify current terms before pricing.
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Use this result
Share the current inputs or ask ChatGPT to explain the calculation in context.
What does this calculator estimate?
$100 at 8 percent sales tax totals $108; 100 euros at 20 percent VAT includes 20 euros of tax. Add tax: total = price x (1 + rate); remove tax: pre-tax = total / (1 + rate).
- Sales tax is added at the register in most US states (Wikipedia).
- VAT is usually included in the displayed price in the EU and UK.
- Remove-tax math divides by (1 + rate), not multiplies by (1 - rate).
How sales tax and VAT differ
Sales tax (US) is added at checkout on top of the listed price; VAT (EU/UK and many countries) is usually included in the displayed price. The calculator handles both directions — adding tax to a price or extracting the tax already in a total.
Limitations to watch for
Rates change and vary by jurisdiction — the reference rates are a starting point; verify current rates for your location. Some states tax some items differently (grocery exemptions, prepared food). VAT rates vary by country and category.
How to use it in practice
For US purchases, enter the price and your state's rate to get the checkout total. For EU/UK prices, use the remove direction to find the pre-tax base. Check rate tables for updates.
['Enter the amount.', 'Choose add or remove tax.', 'Enter the rate; read the result.']
How this calculator works
Formula
Add tax: total = price × (1 + rate). Remove tax: pre-tax = total ÷ (1 + rate). The tool includes US state rates and EU/UK VAT references.
Worked example
$100 at 8% sales tax: $108 total. €100 at 20% VAT: €20 tax included.
Assumptions to verify
- The entered rate is current for the jurisdiction.
- One rate applies to the whole purchase.
- No exemptions or category variations apply.
Frequently asked questions
How do I calculate sales tax?
Multiply the price by (1 + rate): $100 × 1.08 = $108 at 8%.
How do I remove tax from a total?
Divide by (1 + rate): $108 ÷ 1.08 = $100 pre-tax.
What's the difference between sales tax and VAT?
Sales tax (US) is added at checkout; VAT (EU/UK) is usually included in displayed prices.
What are current VAT rates?
EU standard rates run 17–27% (Germany 19%, UK 20%) — the tool includes reference values.
Are all items taxed the same?
No — many states exempt groceries or tax prepared food differently.
Why does my receipt differ?
Local taxes (county/city) stack on state rates, and category rules vary.
How do I price with tax included?
Use the remove direction to find the pre-tax base for a target total.
Cite this tool
BoringToolsKit. “Sales Tax and VAT Calculator.” boringtoolskit.com/sales-tax-vat-calculator/ (reviewed 2026-08-25). Free to reference in articles, syllabi, and answer posts with a link.
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