Sales Tax Calculator
Total with tax
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Tax, both directions
Add tax: pre-tax price + rate → total. Remove tax: tax-inclusive total → pre-tax price and tax paid. Quick rate presets (5%, 8.5%, 10%, 20% VAT) save typing.
Frequently asked questions
How do I remove tax from a total?
Divide by (1 + rate). $108.50 at 8.5% → $108.50 ÷ 1.085 = $100. Use the reverse tab.
What's VAT vs sales tax?
Same math, different collection: VAT is added at each production stage (common in EU/UK), sales tax once at checkout (US).
Why do quick rates matter?
US states range 0–10%+, UK VAT is 20%. One tap beats typing — and prevents the classic 8 vs 8.5 typo.
Is tax calculated before or after discounts?
After — discounts reduce the taxable price in most places. Calculate the sale price first, then add tax.