Add sales tax to a price, or remove it from a tax-included total. Pick your US state or enter any rate.
Sales tax is added at checkout — this tool shows the exact total before you pay.
Calculator
Sales tax is a percentage of the price added at the point of sale. The direction matters: adding tax multiplies the price by the rate; removing it requires dividing — because the total already contains the tax baked in.
Tax = Price × (Rate ÷ 100)
Total = Price + Tax
Example: a $100 item at 7.25% — Tax = $7.25, Total = $107.25.
Price = Total ÷ (1 + Rate ÷ 100)
Tax = Total − Price
Example: $107.25 at 7.25% — Price = 107.25 ÷ 1.0725 = $100.00. A common mistake is taking 7.25% of $107.25 ($7.78) — that over-counts.
These are approximate combined averages (state + typical local rate). Five states have no statewide sales tax: Alaska, Delaware, Montana, New Hampshire and Oregon.
| State | ~Combined rate | State | ~Combined rate |
|---|---|---|---|
| Alabama | 9.25% | Tennessee | 9.55% |
| California | 8.85% | Texas | 8.20% |
| Illinois | 8.86% | New York | 8.53% |
| Florida | 7.00% | Washington | 9.38% |
| Oregon | 0.00% | Pennsylvania | 6.34% |
Verify your exact local rate with your state Department of Revenue before filing. Use the dropdown above to load any state instantly.
Shopping and budgeting. Know the real checkout total before you buy — especially for big purchases like electronics or furniture. Expense reports. The remove-tax mode splits a receipt total into the pre-tax amount and the tax your spreadsheet needs. Small business invoicing. The add-tax mode shows the total to charge customers on invoices.
Multiply the price by the tax rate as a decimal. At 7.25%, a $100 item has $100 × 0.0725 = $7.25 in tax, for a total of $107.25.
Divide the total by 1 plus the rate as a decimal. For a $107.25 total at 7.25%, the pre-tax price is 107.25 ÷ 1.0725 = $100.00. Do not just take a percentage of the total — that over-counts.
Five states have no statewide sales tax: Alaska, Delaware, Montana, New Hampshire and Oregon. Alaska and Montana may still have local rates in some towns.
No. The total you pay is usually the state rate plus a local city and county rate. This calculator uses combined state averages; check your exact ZIP code rate for precise figures.
Not always. Many states exempt or reduce tax on groceries, prescription medicine and sometimes clothing.
Sales tax is charged once at the final retail sale (common in the US). VAT is collected at each stage of production, is used in the UK and EU, and is usually already included in the displayed price.