Free 2026 Sales Tax Calculator

1. Enter the purchase amount before tax.
2. Enter the combined sales-tax rate for the location.
3. Enter any exempt amount if part of the purchase is not taxable.

Better inputs create better estimates. The calculator is designed to accept common formatting such as commas, dollar signs, decimals, and blank optional fields without breaking the result.

Subtract exempt purchases from the purchase amount, multiply the taxable amount by the entered sales-tax rate, then add sales tax back to the purchase amount for the total.

A $250 purchase with an 8.25% sales-tax rate produces $20.63 of sales tax before rounding to a practical receipt-style result.

Year scope: Use the year selector or year note on the calculator itself when comparing thresholds, rates, deductions, or credit limits.

This page is most useful when the user needs a planning estimate before using official forms, payroll systems, filing software, or professional guidance.

• Employees
• Students
• Small business owners

Estimate only. Exact sales tax can depend on city, county, special districts, product type, exemptions, and retailer sourcing rules.

The estimate may differ from a filed return or payroll result when exact worksheets, timing, local taxes, special credits, phaseouts, account-specific IRS notices, or state rules apply.

This calculator is maintained against official IRS, SSA, state-agency, or other authoritative references where applicable. Review the sources page and editorial methodology page to verify update practices.

• https://www.streamlinedsalestax.org/for-businesses/sales-tax-rates
• https://taxadmin.org/state-tax-agencies/

Calculate a simple sales tax amount using a purchase price, any exempt amount, and the rate entered by the user for the relevant state or local jurisdiction.

Estimate only. Exact sales tax can depend on city, county, special districts, product type, exemptions, and retailer sourcing rules.