Your results will appear here.
Enter your values and press Calculate.
In add mode the calculator multiplies your price by the tax rate to get the tax, then adds it for the total with tax. In remove mode it divides the total you paid by one plus the rate to recover the exact pre-tax price, then the tax is the difference between the total and that price. When you enter a quantity, the unit figures stay the same and the quantity total is the total multiplied by the quantity. Money figures are rounded to cents. Results are estimates for checking receipts and planning purchases, not tax advice.
Sales tax is a percentage added to the price of most goods and some services at the point of sale. In the US the rate is set by state, county and city together, so two towns in the same state can charge different rates. The same arithmetic powers value-added tax (VAT) in Europe and goods-and-services tax (GST) in many other countries: a rate is applied to a pre-tax price, and the buyer pays the tax on top.
Pick a direction: add tax to a pre-tax price, or remove tax from a total you already paid (reverse sales tax). Enter the price, the tax rate as a percentage, and optionally a quantity for bulk purchases. The calculator instantly shows the price before tax, the tax amount, the total with tax, and the grand total for the quantity. Results are estimates for planning and checking receipts, not tax advice.
Adding tax: tax = price × rate / 100, and total = price × (1 + rate / 100). Removing tax reverses it: price before tax = total / (1 + rate / 100), and tax = total - price before tax. For a quantity, everything scales: quantity total = total × quantity. The division in the reverse direction is the step people miss; it is what makes the reverse calculation exact.
A $80 item at a 7.25% combined rate: tax = 80 × 0.0725 = $5.80, total = 80 × 1.0725 = $85.80. A $1.75 item at 7%: tax = 1.75 × 0.07 = $0.12, total = $1.87. Larger numbers work identically: an $18,000 purchase at 20% carries $3,600 of tax for a $21,600 total. The arithmetic does not care whether the percentage is a sales tax, a tariff or a markup.
You paid $107 and the local rate is 7%. Divide, do not subtract: 107 / 1.07 = $100.00, so the tax was $7.00. Another: a $108.25 total at 8.25% gives 108.25 / 1.0825 = $100.00 before tax, $8.25 tax. This reverse direction is what you need when a tax-inclusive receipt total already includes the tax and you want the pre-tax figure for expense reporting or bookkeeping, or the net price from a gross total.
Removing tax requires division because the tax was charged on the smaller pre-tax figure, not on the total. Subtracting 7% of a $53.50 total gives $49.75, which is wrong; the correct pre-tax price is 53.50 / 1.07 = $50.00 with $3.50 tax. At a 20% rate the mistake is bigger: $600 minus 20% gives $480, but the true net is 600 / 1.20 = $500. Remember: always divide by (1 + rate).
Sales tax, VAT and GST are different names for a consumption tax, and the arithmetic is identical: tax = price × rate. US sales tax is charged once at the final retail sale, while VAT (Europe) and GST (many Commonwealth countries) are collected at each stage of the supply chain but still add the same percentage to the consumer price. This calculator handles any of them; just enter the applicable rate. Common VAT rates: UK 20%, Germany 19%, France 20%, Australia GST 10%.
Yes, usually. Sales tax applies to the amount after discounts, so discount first, then tax the reduced amount. A $50 item with a 10% discount becomes $45, and at 8% tax the total is 45 × 1.08 = $48.60. If the store had taxed the original price you would pay $54.00, so the order of operations saves you money here.
Enter the quantity and the calculator scales everything: unit tax, unit total and the grand total. The equivalent shortcut is to sum the pre-tax prices of all items, then apply the rate once: total = subtotal × (1 + rate / 100). Four units at $50 with 8% tax: unit total $54.00, grand total $216.00.
To reverse tax in Excel or Google Sheets, use =A2/(1+B2/100) for the pre-tax price from a tax-included total in A2 with the rate in B2, and =A2-(A2/(1+B2/100)) for the tax amount. To add tax, use =A2*(1+B2/100). These are exactly the formulas this calculator runs, so your spreadsheet and this page always agree.
Using a stale local rate: combined state, county and city rates change and vary by location, so confirm the current rate before relying on it. Subtracting the percentage instead of dividing (covered above). Taxing the pre-discount price instead of the discounted one. Rounding: tax is rounded to cents per line or per receipt, so totals can differ by a cent or two; that is normal. And remember a displayed rate button on some other site is an example, not official rate data for your address.
Multiply the pre-tax price by the tax rate as a decimal: tax = price × rate / 100, then total = price + tax. For a $100 item at 7.5%, tax is 100 × 0.075 = $7.50 and the total is $107.50. The shortcut total = price × (1 + rate/100) does it in one step.
Divide the tax-included total by one plus the rate as a decimal: price = total / (1 + rate/100). Then tax = total - price. For a $107.50 total at 7.5%, the pre-tax price is 107.50 / 1.075 = $100.00 and the tax was $7.50. This reverse calculation is handy for receipts and expense reports, and it is the correct way to back out the sales tax from a total.
Because the tax was charged on the smaller pre-tax price, not on the total. Subtracting 7% from $53.50 gives $49.75, but the true pre-tax price is $50.00. Always divide the total by (1 + rate/100) instead.
They are different names for a consumption tax and the arithmetic is identical: tax = price × rate. US sales tax is collected once at retail; VAT (Europe) and GST (many other countries) are collected along the supply chain. Enter any of their rates in this calculator and it works the same.
Usually yes. Stores tax the discounted amount: discount first, then apply tax. A $50 item marked down 10% to $45 with 8% tax totals $48.60, not $54.00.
Add up the pre-tax prices, then apply the rate once: total = subtotal × (1 + rate/100). Or enter a quantity in this calculator and it scales the unit tax, unit total and grand total for you.
With the total in A2 and the rate in B2, use =A2/(1+B2/100) for the pre-tax price and =A2-(A2/(1+B2/100)) for the tax amount. To add tax instead, use =A2*(1+B2/100).
Use the combined state, county and city rate that applied where the sale happened. Rates change periodically and vary by location, so confirm the current local rate rather than trusting a remembered figure. This calculator accepts any rate you enter.
Estimate your monthly mortgage payment with taxes and insurance.
Find percentages, percentage change and reverse percentages instantly.
Split the bill and calculate the perfect tip in seconds.
Sale price and savings, instantly.
Divide a restaurant check with tip and tax, evenly or by what each person ordered.