Sales Tax Calculator
Your purchase
Leave the rate blank to use your state's base sales tax rate. County and city tax is not included, so treat the result as an estimate — if you know your combined local rate, type it in the rate box instead.
Example: $100.00 at 7.25% → $7.25 tax, $107.25 total.
Behind the numbers
How sales tax is calculated
Sales tax is a percentage of the price before tax. Multiply the item price by the quantity to get the subtotal, then multiply the subtotal by the tax rate as a decimal. The total you pay is the subtotal plus the tax. The rate used here is your state's base rate — most towns add county and city tax on top, so the tax on a real receipt is often a little higher.
A $100.00 item in California at 7.25%: tax = $100.00 × 7.25% = $7.25, total = $100.00 + $7.25 = $107.25. A $49.99 item in Florida at 6%: tax = $49.99 × 6% = $2.9994, rounded to $3.00, total $52.99.
Examples
Example sales tax amounts
| Item | State & rate | Tax | Total |
|---|---|---|---|
| $100.00 × 1 | California, 7.25% | $7.25 | $107.25 |
| $49.99 × 1 | Florida, 6% | $3.00 | $52.99 |
| $200.00 × 1 | Oregon, 0% | $0.00 | $200.00 |
| $59.99 × 3 | Texas, 6.25% | $11.25 | $191.22 |
| $1,000.00 × 1 | New York, 4% | $40.00 | $1,040.00 |
Tips before you check out
Use the full combined rate — state plus county plus city — if you know it: type it in the rate box and the calculator uses it instead of the state rate.
Groceries and clothing are tax-free or taxed at a lower rate in some states, so the rate on a receipt can differ from the standard rate used here.
Oregon, Montana, Delaware and New Hampshire have no statewide sales tax, and Alaska has no state sales tax either, though some Alaska towns charge a local tax.
Online orders usually charge the tax rate of the delivery address, not the store's address — use the state you are shipping to.
Good to know
Frequently asked questions
Is the tax charged on the price before or after a discount?
After the discount. The store applies the coupon or sale price first, then charges tax on the lower price. A $100 item on sale for $80 at 7.25% is taxed on $80, which is $5.80.
Why does my receipt show more tax than this calculator?
This calculator uses the state base rate only. Most receipts also include county and city tax, which can add several percent. Type your full combined rate in the rate box to match the receipt.
Which states have no sales tax?
Oregon, Montana, Delaware and New Hampshire have no statewide sales tax, and Alaska has no state sales tax, though some Alaska towns charge a local tax. Every other state charges at least its base rate.
How is sales tax rounded?
Tax is rounded to the nearest cent at the end of the calculation. A tax of $2.9994 becomes $3.00, and the total is the subtotal plus that rounded tax.