Sales Tax Calculator

Add sales tax to a price using each US state's average combined state and local rate, or enter your own exact rate.

Your numbers

Price before tax

State

Use my own rate instead

Your result · updates as you type

Sales tax in Texas

$7.38

$89.99 plus 8.2% tax comes to $97.37.

Tax amount: $7.38
Total with tax: $97.37
Rate used: 8.2%

This uses the Tax Foundation's population-weighted average local rate for the state, current as of 1 Jul 2026. Your exact city or county rate can be higher or lower, and it also depends on what you're selling. Shopify Tax and WooCommerce's automated tax both calculate the precise rate by address, which is what you should charge at checkout.

Breakdown

Texas: state rate: 6.25%
Texas: average local rate: 1.95%
Texas: average combined rate: 8.2%
Price before tax: $89.99
Sales tax: $7.38
Total: $97.37

How the tax is worked out

Sales tax = price before tax × combined state and local rate

Example: the default numbers (Texas)

Price before tax: $89.99
Texas: state rate + average local rate: 6.25% + 1.95% = 8.20% combined

Sales tax = 89.99 × 8.20% = $7.38. Total = $97.37.

Where the rates come from

Combined rates are the Tax Foundation's population-weighted average local rate added to each state's own rate, effective 1 Jul 2026. It's an average: your exact city or county rate, and what's actually taxable, can differ. Five states (Alaska, Delaware, Montana, New Hampshire and Oregon) have no statewide sales tax, though Alaska allows local sales taxes in some areas.

Using it on your store

For a specific order, don't rely on this alone. Shopify Tax and WooCommerce's automated tax both calculate the precise rate by delivery address, which is what you should actually charge at checkout.
For quotes, estimates and budgeting, the state average combined rate is usually close enough.
Selling into a state you have nexus in? Check the economic nexus calculator to see if you're required to collect there at all.

Questions people ask

Which US state has the highest sales tax?

As of the Tax Foundation's midyear 2026 data, Louisiana has the highest average combined state and local rate, at about 10.13%.

Which states have no sales tax?

Alaska, Delaware, Montana, New Hampshire and Oregon have no statewide sales tax. Alaska still allows some local jurisdictions to charge their own sales tax.

Why does my actual checkout show a different rate than this calculator?

This uses each state's average local rate. Your specific city, county or special district can be higher or lower, which is why Shopify Tax and WooCommerce's automated tax calculate the exact rate by address.

Do I have to collect sales tax in every state I ship to?

Only where you have nexus, either physical or economic (from passing a state's sales or transaction threshold). Check the economic nexus calculator to see where you might owe.

Last reviewed 30 September 2026.

Sources: Tax Foundation: State and Local Sales Tax Rates, Midyear 2026