Add sales tax to a price, or work backward from a receipt total to find the price before tax. Enter an amount and the tax rate that applies where you buy, then choose whether the amount is before tax or already includes tax. The page shows the price before tax, the tax amount, and the total. With the default $120.00 at 8.25%, the tax is $9.90 and the total is $129.90. Tax rates vary by country, state, county, and city and change over time, so enter the current rate from your local tax authority; this page does not supply rates. This is an everyday estimate only, not tax, legal, or accounting advice.
To add tax, multiply the price by the rate divided by 100 to get the tax, then add it to the price. At 8.25%, a $120.00 price has 120 × 8.25 ÷ 100 = $9.90 tax, so the total is $129.90.
To remove tax from a total that already includes it, divide the total by 1 plus the rate as a decimal. At 8.25%, a $108.25 total is 108.25 ÷ 1.0825 = $100.00 before tax, and the tax is the difference, $8.25. Do not simply take 8.25% off the total: 8.25% of $108.25 is $8.93, which is too much, because the tax was charged on the lower pre-tax price. In a tax-inclusive total, the tax share is rate ÷ (100 + rate), so at 8.25% the tax is 7.62% of the total.
The page keeps full precision while it calculates and rounds each figure to cents only for display, half-up, so a half cent rounds up. Sellers may round tax per item or per receipt, and some items are taxed at different rates or are exempt, so a real receipt can differ by a cent or more. Rates vary by location and change, so this page does not list them. Check your state, provincial, or national tax authority for the current rate.
A $120.00 price at 8.25%. Tax = 120 × 8.25 ÷ 100 = 9.90, so the tax is $9.90 and the total is 120 + 9.90 = $129.90. In reverse, a $108.25 total at 8.25% is 108.25 ÷ 1.0825 = $100.00 before tax, with $8.25 tax. This is an everyday estimate only, not tax, legal, or accounting advice.
Add tax: tax = price × rate ÷ 100; total = price + tax. Remove tax: price before tax = total ÷ (1 + rate ÷ 100); tax = total − price before tax. Tax share of a tax-inclusive total = rate ÷ (100 + rate) × 100%. Display: each figure rounded half-up to cents once, from full precision
Everyday estimate only, not tax, legal, or accounting advice. This page applies the single rate you enter to the amount you enter and rounds each figure to cents for display. It does not know local rates, exemptions, item-specific rates, or how a seller rounds. Tax rates vary by location and change over time; check your local tax authority for the current rate.
Multiply the price by the tax rate divided by 100. At 8.25%, a $120.00 item has 120 × 0.0825 = $9.90 tax. Add the tax to the price for the total: $129.90. For several items taxed at the same rate, you can add the prices first and apply the rate once.
Divide the total by 1 plus the rate as a decimal. At 8.25%, divide by 1.0825: a $108.25 total was $100.00 before tax, and the tax was $8.25. This is what a reverse sales tax calculator does. Choose Remove tax on this page and enter the total.
Because the tax was charged on the pre-tax price, not on the total. Taking 8.25% off a $108.25 total removes $8.93, but the real tax was $8.25. In a tax-inclusive total the tax is rate ÷ (100 + rate) of the total: at 8.25% that is 7.62%, and at 20% it is 16.67%.
Use the combined rate for the place where the sale is taxed. In the US that can include state, county, city, and special-district parts, and it can differ for food, clothing, or other items. Rates change, so this page does not list them. Check your state, provincial, or national tax authority, or the rate printed on a recent receipt.
Yes, the arithmetic is the same. Enter the VAT or GST rate and choose Add tax for a net price or Remove tax for a price that already includes it. For example, a 60.00 price including 20% VAT is 50.00 before VAT, with 10.00 VAT. Business rules such as reverse charge or input-tax credits are not covered.
It keeps full precision while calculating and rounds each displayed figure to cents once, half-up, so a half cent rounds up: 10.10 at 5% has 0.505 tax, shown as 0.51. When you add tax to a price in whole cents, the displayed price plus tax always equals the displayed total; when you remove tax, the rounded parts can differ from the total by one cent. Sellers may round per item or per receipt, so a real receipt can differ by a cent.