250 plus 8.25% sales tax
Input Price before tax 250, rate 8.25%, add mode.
Result Tax 20.63, total 270.63.
Sales Tax Calculator
Money & BusinessAdd sales tax to a price or strip it out of a total, with a built-in table of US state base rates.
Your inputs
Result
Total with tax
—
- Tax amount —
- Price before tax —
Change any input and the result updates instantly.
Formula and rules
- Add tax: tax = price × rate ÷ 100, then total = price + tax
- Reverse tax: base = total ÷ (1 + rate ÷ 100), then tax = total − base
- The state table holds statewide base rates; picking a state overrides the rate box
Worked examples
108.25 including 8.25% tax
Input Total including tax 108.25, rate 8.25%, reverse mode.
Result The price before tax is 100.00 and the tax inside the total is 8.25.
FAQ
Does this calculator know my local sales tax rate?
It knows the statewide base rate for all 50 states and DC, but not county or city add-ons. Pick your state to fill the base rate, then replace it with the combined rate printed on your receipt if local taxes apply.
Why is the tax not exactly the rate times the total in reverse mode?
Tax was added to the base price, so the total is 108.25% of the base when the rate is 8.25%. Dividing by 1.0825 recovers the base; multiplying by 8.25% would overstate the tax.
Can I use it for VAT or GST?
Yes. VAT, GST and most consumption taxes use the same percentage maths. In tax-inclusive countries you usually want the reverse mode so the listed price stays as the total.
Disclaimer: This tool is an estimate based on published rates and common rules. Fees, tax rates and platform policies change often, and the result is not tax, financial or legal advice. Always confirm with official sources or a qualified professional.