Sales Tax Calculator

Add sales tax on top of a price, pull the tax back out of a tax-inclusive total, or total a shopping list and see how much of the bill is tax.

What do you need to work out?
Calculation mode
Advanced: example values and currency
Quick examples
Total price including tax
0
Enter a price and a tax rate to see the result.
Pre-tax price0
Tax amount0
Total price0
How the bill splits into price and tax
Pre-tax price 0 Tax 0

The green part is the money for the goods themselves; the red part is the sales tax added on top. Together they make the total price.

Receipt breakdown
Item Unit price Qty Line subtotal

In single-price modes the receipt shows one line. Switch to the itemised list to total a full shopping list with per-line quantities.

For beginners: how to read this result
Adding taxTax equals the pre-tax price multiplied by the rate divided by 100. The total is the pre-tax price plus that tax.
Extracting tax is not subtractionTo pull tax out of a tax-inclusive total you divide, not subtract: pre-tax price equals the total divided by one plus the rate over 100. The tax is whatever is left.
The itemised listEach line is unit price times quantity. All lines add up to a combined subtotal; the rate is applied once to that subtotal to give the tax and grand total.
The rate is yours to setCombined sales tax rates differ by state, county and city and change over time, so the calculator never assumes one. Always type in the rate that applies to you.
This is an arithmetic estimate based on the price and tax rate you enter. It does not look up jurisdiction rates and does not handle layered state-and-local taxes, tax-exempt items, shipping rules, discounts or rounding rules specific to any region. Confirm the correct sales tax rate and rules for your location before relying on these figures.

Pick a calculation mode, enter a sales tax rate and the price or list of items, and the calculator returns the figure you came for: the total price, the pre-tax price, or the grand total for a shopping list. The tax rate is always something you type in, because combined sales tax rates differ by state, county and city and change over time.

The three modes

The mode toggle reshapes the input panel so only the relevant fields are shown.

  • Add tax to a price — you enter a pre-tax price and the rate. The headline answer is the total price including tax, and the breakdown shows the tax amount.
  • Extract tax from a total — you enter a tax-inclusive total and the rate. The headline answer is the pre-tax price, and the breakdown shows the tax portion that was inside the total.
  • Itemised list — you add several lines, each with a description, unit price and quantity. The receipt table shows every line subtotal, the combined subtotal, the tax and the grand total.

The formula in plain English

Adding tax: the tax equals the pre-tax price multiplied by the rate divided by 100, and the total is the pre-tax price plus that tax. Extracting tax is not subtraction — you divide: the pre-tax price equals the tax-inclusive total divided by one plus the rate over 100, and the tax portion is whatever is left over. For the itemised list, each line subtotal is unit price times quantity, all line subtotals add up to a combined subtotal, and the rate is applied once to that combined subtotal to give the tax and the grand total.

The receipt breakdown and split bar

Below the headline, a two-colour bar shows what share of the total is the price of the goods and what share is tax, and a receipt-style table lists the figures the way a real receipt is laid out: line items, subtotal, tax, grand total. The receipt is filled in for every mode, so single-price modes show a one-line receipt and the itemised list shows the full breakdown.

What is not included

This is a price-and-tax arithmetic tool. It does not look up a jurisdiction’s rate from a ZIP code or address, and it does not handle separate state-and-local tax lines, tax-exempt items, shipping or handling tax rules, discounts, coupons or rounding rules specific to any region. Confirm the correct rate and rules for your location before relying on the result.