Sales Tax Calculator — Free Online Tax & Total Price Calculator
Calculate sales tax with US state rates, custom rates, and support for multiple items. All calculations happen locally — nothing leaves your browser.
How to Use the Sales Tax Calculator
- Select a state — choose from the dropdown to auto-fill the tax rate, or enter a custom rate.
- Add items — enter item names and prices. Add as many items as needed.
- View breakdown — see subtotal, tax amount, and total.
- Copy summary — save the breakdown to your clipboard.
Understanding Sales Tax
Sales tax is a consumption tax imposed by state and local governments. Rates vary significantly by state and even by city. Five states have no statewide sales tax: Oregon, Montana, New Hampshire, Delaware, and Alaska.
Some states have base rates that can be increased by local jurisdictions. The rates shown here are state-level rates and may not include local additions.
Frequently Asked Questions
These are state-level base rates. Actual rates may be higher due to local county/city taxes. For the most accurate rate, check your state's Department of Revenue website or your receipt.
Tax is typically calculated on the final sale price, not the original price. First use the Discount Calculator to find the sale price, then enter that amount here.
This calculator doesn't save custom rates between sessions. For frequently used rates, note them or use a spreadsheet. You can manually enter any rate in the tax rate field.
Use Cases
Total Price Calculation
Calculate the total price including sales tax for any purchase to know exactly what you will pay at checkout.
Cross-State Price Comparison
Compare prices across different tax jurisdictions to find the best deals when shopping across state or city lines.
Large Purchase Estimation
Estimate total tax on big-ticket items like cars, electronics, or furniture before heading to the store.
Effective Tax Rate Understanding
Understand the effective tax rate you pay on purchases to make better budgeting decisions for recurring expenses.
Tax-Inclusive Budgeting
Plan budgets with tax-inclusive pricing to avoid surprises when final bills arrive at the register.