US Sales Tax Calculator
Work out the sales tax on any purchase in any US state — and the total you will actually pay. Pick your state and we use its average combined state and local rate, or type in an exact rate of your own.
Price before tax
$100.00
Sales tax (9.03%)
$9.03
Total with tax
$109.03
California: state rate 7.25% + average local rate 1.78% ≈ 9.03% average combined, as of July 1, 2026. Your exact local rate may differ.
Rates: Tax Foundation — State and Local Sales Tax Rates, Midyear 2026, as of July 1, 2026. Averages — your exact local rate may differ. Need to remove tax from a total instead?
1. Enter the price
Type the price before tax — the sticker price of the item or your basket total.
2. Pick the state
Choose where the purchase happens. The calculator loads that state's average combined state + local rate automatically.
3. See tax and total
You get the tax amount and the full total instantly. Switch to a custom rate any time you know the exact rate from a receipt.
How sales tax is calculated
The formula is simple: tax = price × rate, and total = price + tax. A $100 purchase at an 8.25% rate adds $8.25 of tax, for a $108.25 total. The tricky part in the US is knowing which rate applies — there is no single national sales tax. Forty-five states charge a statewide tax, and thousands of counties, cities and special districts add their own on top.
That is why this site uses each state’s average combined rate: the state rate plus a population-weighted average of its local rates, published by the Tax Foundation. It is the fairest single estimate for a state — but for an exact figure on a specific purchase, use the custom rate option with the rate for the exact location, or check our guide to how US sales tax works.
Sales tax rates by state (averages)
Full table & sources| State | State rate | Avg. local rate | Max. local rate | Avg. combined |
|---|---|---|---|---|
| Alabama (AL) | 4.00% | 5.46% | 8.00% | 9.46% |
| Alaska (AK) | 0.00% | 1.82% | 7.85% | 1.82% |
| Arizona (AZ) | 5.60% | 2.94% | 5.30% | 8.54% |
| Arkansas (AR) | 6.50% | 2.98% | 6.13% | 9.48% |
| California (CA) | 7.25% | 1.78% | 5.25% | 9.03% |
| Colorado (CO) | 2.90% | 4.99% | 9.10% | 7.89% |
| Connecticut (CT) | 6.35% | 0.00% | 0.00% | 6.35% |
| Delaware (DE) | 0.00% | 0.00% | 0.00% | 0.00% |
| District of Columbia (DC) | 6.00% | 0.00% | 0.00% | 6.00% |
| Florida (FL) | 6.00% | 0.98% | 2.00% | 6.98% |
Showing the first 10 states alphabetically. Louisiana has the highest average combined rate at 10.13%; Delaware, Montana, New Hampshire and Oregon have no sales tax at all.