Free calculator for receipt totals

Reverse Sales Tax Calculator

Find the original price before tax from the total on your receipt.

51 states Updated rates

Enter the total amount shown on your receipt.

The state rate is a starting estimate. For a receipt check, enter the combined state and local rate shown on the receipt.

If you do not know the local rate, choose your state and use the filled rate as a starting estimate. State base rates verified September 2026.

Pre-tax price$0.00
Tax amount$0.00
Total$0.00
HOW THE CALCULATION WORKS

What is reverse sales tax?

Reverse sales tax removes the tax from a final receipt total so you can see the original price and the tax amount separately.

This is also called a back out sales tax calculator, a backwards tax calculator, or a remove sales tax calculator.

This is a tax inclusive calculator. Enter a tax-inclusive total and it gives the price before tax and the tax amount.

Net means the price before tax. Gross means the total with tax included. This calculator turns a gross total into the net price before tax.

A simple way to read your receipt

When a receipt shows one final amount, the price and the tax are already combined. Enter the total and the rate to separate them.

01
Start with total paid

Use the amount printed as the final receipt total.

02
Use the right rate

A combined state and local rate gives the closest receipt check.

03
Read both amounts

The result shows the price before tax and the tax included in the total.

Worked example: a $107.25 receipt at 7.25%

Why you cannot just subtract the rate

Taking the rate off the total gives the wrong answer. 7.25% off $107.25 is $99.47, not $100.00 ($107.25 times 0.0725 is $7.78; $107.25 minus $7.78 is $99.47). Always divide by 1 plus the rate as a decimal.

Rounding check: $50.51 times 8.875% is $4.48, and $50.51 plus $4.48 is $54.99.

Formula107.25 divided by 1.0725 equals 100.00
Rate noteA state rate is a starting estimate. Use the combined rate on the receipt when possible.

Remove sales tax calculator

Enter a total that already includes tax, and this calculator gives the price before tax and the tax amount.

This tool is also called a tax removal calculator or a tax remover calculator.

How it works

Three short steps take you from a receipt total to the amount before tax.

1

Enter the total

Type the tax-inclusive amount printed on the receipt.

2

Confirm the rate

Use a state estimate or enter the combined rate from the receipt.

3

Read the result

See the price before tax, the tax amount, and the total.

In short: to back out sales tax from a total, divide the total by 1 plus the tax rate as a decimal.

The reverse sales tax formula

Use the same calculation by hand or in a spreadsheet.

Pre-tax price = Total price divided by (1 plus tax rate)

Example: $107.25 divided by 1.0725 gives $100.00 before tax.

Divisor table: a $100 total at common rates

For a $100 total, divide by 1 plus the rate to get the price before tax.

RateDivisorPrice before taxTax inside the $100 totalTax as a share of the total
4%1.04$96.15$3.853.85%
5%1.05$95.24$4.764.76%
6%1.06$94.34$5.665.66%
7%1.07$93.46$6.546.54%
7.25%1.0725$93.24$6.766.76%
8%1.08$92.59$7.417.41%
9%1.09$91.74$8.268.26%
10%1.10$90.91$9.099.09%

How to calculate sales tax

To calculate sales tax, multiply the price before tax by the tax rate as a decimal. For $100.00 at 7.25%, multiply $100.00 by 0.0725 to get $7.25 tax, for a total of $107.25.

GST and VAT

The same maths works for GST and VAT. Divide by 1 plus the rate.

At 10% GST, $110 divided by 1.10 is $100.

At 15% GST, $115 divided by 1.15 is $100.

At 20% VAT, £120 divided by 1.20 is £100.

At 15% GST, use the 3/23 fraction: $575 gives $75 GST and $500 before GST.

This site covers US sales tax. The GST wording here is the same maths applied to a GST total.

Other tools

Use a second tool when your question is about adding tax, comparing states, or checking a receipt.

Reverse tax lookup

Pick a state, read the rate, then use that rate in the calculator. Use the state picker at the top of this page to choose your state.

Examples by state

These examples use state rates. Local rates can change the result.

California

State rate 7.25 percent

$107.25 divided by 1.0725 = $100.00

Enter the combined rate from your receipt when local tax is included.

Texas

State rate 6.25 percent

$106.25 divided by 1.0625 = $100.00

Local rates can raise the combined rate above the state rate.

New Jersey

State rate 6.625 percent

$106.625 divided by 1.06625 = $100.00

Check the transaction details when a special local rule may apply.

New Jersey reverse sales tax calculator: state rate 6.625%. $106.625 divided by 1.06625 = $100.00 before tax.

Price before tax calculator

To find the price before tax, divide the total by 1 plus the tax rate as a decimal — $107.25 divided by 1.0725 is $100.00 before tax at 7.25%.

Check a receipt

Compare the tax charged with the rate you enter. This is a general check, not a tax decision.

Find the tax rate from a total

Start with the total and the price before tax. For a $107.25 total with $100.00 before tax, the tax amount is $7.25. Divide the tax amount by the pre-tax price: $7.25 divided by $100.00 is 0.0725, which is 7.25%.

Tax rate equals tax amount divided by pre-tax price, times 100, as a percentage.

This tool is also a reverse tax rate calculator.

QUICK ANSWERS

Frequently Asked Questions

Short answers to the questions people ask before using the calculator.

How do I remove sales tax from a total?
Divide the tax-inclusive total by one plus the tax rate written as a decimal. The result is the price before tax.
Should I use a state rate or a combined rate?
Use the combined state and local rate on the receipt when you need to check a specific purchase. A state rate is a starting estimate.
What is the formula?
Pre-tax price equals total price divided by one plus the tax rate. Tax amount equals total price minus the pre-tax price.
Can I use the calculator for a business receipt?
Yes. Enter the tax-inclusive total and the rate that applies to the transaction. Keep the receipt and confirm the rate before using the result for formal records.
Why can my result differ by a few cents?
Merchants may round tax at the item level or at the order level. A small difference does not always mean the rate is wrong.
Which states have no statewide sales tax?
Alaska, Delaware, Montana, New Hampshire, and Oregon have no statewide sales tax. Some local areas may still charge a local tax.
Can I use the result as tax advice?
No. The calculator provides a general estimate. Confirm rates with the relevant tax authority or a qualified professional for formal decisions.
How can I save the result?
Use Save Result to download the calculation, or use Print and Copy Link when those options fit your task.
How do I back out sales tax from a total?
Divide the total by 1 plus the tax rate as a decimal. For $107.25 at 7.25%, divide $107.25 by 1.0725 to get $100.00 before tax.
How do I back out sales tax from the total price?
Divide the total price by 1 plus the tax rate as a decimal. For $107.25 at 7.25%, divide $107.25 by 1.0725 to get $100.00 before tax, and $7.25 of tax.
How do I calculate sales tax?
Multiply the price before tax by the tax rate as a decimal. For $100.00 at 7.25%, multiply $100.00 by 0.0725 to get $7.25 tax, for a total of $107.25.
How do I subtract sales tax from a total?
Divide the total by 1 plus the tax rate as a decimal. Do not subtract the tax rate from the total. For $107.25 at 7.25%, divide $107.25 by 1.0725 to get $100.00 before tax.
What is the formula to remove tax from a total?
Pre-tax price equals total price divided by one plus the tax rate. Tax amount equals total price minus the pre-tax price. For $107.25 at 7.25%, divide $107.25 by 1.0725 to get $100.00 before tax.
How do I figure out the tax percentage from a total?
Divide the tax amount by the pre-tax price, then multiply by 100. For a $107.25 total with $100.00 before tax, the tax is $7.25, so $7.25 divided by $100.00 is 0.0725, which is 7.25%.
How do I calculate sales tax backwards from a total?
Divide the total by 1 plus the tax rate as a decimal. For $107.25 at 7.25%, divide $107.25 by 1.0725 to get $100.00 before tax.
How do I calculate the price before tax?
Divide the total by 1 plus the tax rate as a decimal. For $107.25 at 7.25%, divide $107.25 by 1.0725 to get $100.00 before tax.
How do I find the price before tax?
Divide the total by 1 plus the tax rate as a decimal. For $107.25 at 7.25%, divide $107.25 by 1.0725 to get $100.00 before tax.
How do I remove tax from a total?
Divide the total by 1 plus the tax rate as a decimal. For $107.25 at 7.25%, divide $107.25 by 1.0725 to get $100.00 before tax.
How do I calculate the tax percentage from a total?
Divide the tax amount by the pre-tax price, then multiply by 100. For a $107.25 total with $100.00 before tax, the tax is $7.25, so $7.25 divided by $100.00 is 0.0725, which is 7.25%.
What is a tax-inclusive total?
A tax-inclusive total is the final amount on a receipt, with the tax already inside it.
Is this a net to gross calculator?
No, it works the other way round from a net to gross calculator. It turns a gross total into the net price before tax.

Check the rate behind your result.

Use these references when you need to understand a rate or confirm the information around a calculation.

Tax FoundationState rate reference Internal Revenue ServiceSales and use tax information State tax administrationState rate reference
About this calculatorPlain-language tools for checking receipt totals.

Guides and state calculators

Short, plain-language explainers for the questions that come up once you have your number.

Start here

Understand your receipt

Selling and pricing

Calculators by state

About this page

This page is written and kept up to date by the ReverseSalesTax.com team.

Last updated: 14 November 2026.

Sources: state rates on each state calculator page; combined state and local averages on the rates page use Tax Foundation figures, midyear 2026 (July 1, 2026).

What changed

13 November 2026 — Added five new sections (including a divisor table), a worked receipt example, and 11 new questions (FAQ 8 to 19).

14 November 2026 — Added a New Jersey example, a GST and VAT block, a reverse tax lookup block, tax-inclusive and net/gross notes, and 2 new questions (FAQ 19 to 21).

FOR BUSINESS PLANNING

Turn a sales target into a plan.

Once you know the total on a receipt, the next question may be how much you need to sell to cover your costs.

Open Break Even CalculatorModel costs and sales targets

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Important Disclaimer

The tools and information on ReverseSalesTax.com are for general informational and educational purposes only. They do not constitute professional tax, legal, or financial advice. Sales tax rates change frequently; always verify with your state’s Department of Revenue or a qualified tax professional before making financial decisions. ReverseSalesTax.com is not affiliated with any government agency.

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