How to use this sales tax calculator
- Enter before-tax price and tax rate to find the total — leave after-tax blank.
- Know the receipt total? Enter after-tax price and rate to back out the pre-tax amount.
- Shopping across jurisdictions? Enter both prices to discover the effective rate applied.
What is sales tax?
Sales tax is a consumption levy added at the point of sale. In the United States it is primarily administered by states and localities, so the rate on a receipt may combine state, county, city, and special-district components. Unlike VAT, U.S. sales tax is usually shown separately on the receipt rather than embedded in shelf prices.
Forward and reverse formulas
When you know the final total, work backward:
Sample U.S. state rates
Five states have no statewide sales tax (Alaska, Delaware, Montana, New Hampshire, Oregon), though local taxes may still apply in some areas. The table highlights a cross-section of state and approximate combined local maximums:
| State | State rate | Max with local |
|---|---|---|
| Alabama | 4% | 13.5% |
| Alaska | 0% | 7.5% |
| Arizona | 5.6% | 11.2% |
| Arkansas | 6.5% | 12.625% |
| California | 7.25% | 10.75% |
| Colorado | 2.9% | 11.2% |
| Florida | 6% | 8% |
| Georgia | 4% | 9% |
| Illinois | 6.25% | 11% |
| New York | 4% | 8.875% |
| Texas | 6.25% | 8.25% |
| Washington | 6.5% | 10.4% |
Sample rates for orientation only — verify current figures with your state revenue department before filing or pricing.
Sales tax vs VAT vs GST
Value-added tax (VAT) is common in Europe and many other regions — tax is assessed at each production stage but ultimately borne by the consumer. Goods and services tax (GST) in countries like Canada, Australia, and India follows a similar credit-invoice model. U.S. sales tax is simpler at the register but varies sharply by ZIP code.
Tax deductions (U.S.)
Taxpayers who itemize may deduct state and local sales tax or income tax (subject to SALT caps and IRS rules). Keep receipts for major purchases if you elect the sales-tax method. This calculator is for estimation — consult a tax professional for filing decisions.
Examples and use cases
Worked example
A $200 item in a jurisdiction with 8.25% combined sales tax:
- Tax amount = $200 × 0.0825 = $16.50
- Total at register = $216.50
- Reverse check: $216.50 ÷ 1.0825 = $200 pre-tax
Real-world use cases
- Cross-border shopping: A buyer near a state line compares receipts to see whether driving to a lower-tax county saves enough on a large appliance purchase.
- Small business pricing: An Etsy seller adds the correct combined local rate to handmade goods so shelf prices match what customers pay at checkout.
- Expense reporting: An employee enters the after-tax total from a receipt and backs out the pre-tax amount for a reimbursement form that excludes tax.