Business calculator
Sales Tax Calculator
Calculate sales tax for invoices, receipts, and quotes. Enter a subtotal and tax rate to see the tax amount and final total.
Sales tax$20.63
Total after tax$270.63
Effective tax rate8.25%
Remove sales tax from a total
Use this when a receipt already includes sales tax and you need the pre-tax amount.
Pre-tax amount$250.00
Tax included$20.63
Frequently Asked Questions
How do I calculate sales tax?
Multiply the taxable subtotal by the sales tax rate, then add the tax amount to the subtotal.
Can sales tax vary by location?
Yes. Rates and taxability can vary by state, city, county, and product category. Verify the rate before sending a final document.
Is this tax advice?
No. This calculator is a general business tool and does not replace tax, accounting, or legal advice.