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Sales Tax Calculator

Sales Tax Calculator

sales tax calculator Add or remove sales tax and estimate the tax amount for a retail price.

Use this free sales tax calculator to add or remove sales tax and estimate tax amount before setting a retail price.

Free tool

Use the Sales Tax Calculator

No signup required

Pre-tax price

100.00

Tax amount

8.25

Final price

108.25
A sales tax calculator helps you estimate tax amount and final price without doing the math by hand each time. This is useful for retail pricing, ecommerce planning, and quick order checks when tax needs to be added or separated from a total.

The basic workflow is simple. Enter the item price, add the sales tax rate, and choose whether you want to add sales tax to a pre-tax amount or remove it from a tax-inclusive total. The tool then shows the pre-tax price, tax amount, and final price together.

This is especially helpful for sellers who need a fast pricing check before publishing a product, running a promotion, or reviewing order totals. Even when the formula is easy, small manual mistakes can stack up when prices change often or when multiple rates are involved.

This page is best used as a quick calculation tool, then paired with margin and pricing checks elsewhere on the site. Tax changes the amount a customer pays and the way prices are displayed, so it should be reviewed alongside discounts, shipping cost, and profit assumptions.

How to use it

Step 1

Enter the item price you want to evaluate.

Step 2

Add the sales tax rate that applies to the order.

Step 3

Choose whether to add tax or remove it from a total, then review the tax amount and final price.

FAQ

How do you calculate sales tax?

Multiply the pre-tax price by the sales tax rate to find the tax amount, then add that tax to the original price.

Can I remove sales tax from a total price?

Yes. If the total already includes tax, divide the total by one plus the tax rate to estimate the pre-tax price.

Why use a sales tax calculator?

A sales tax calculator helps you avoid manual errors and quickly compare totals when prices or tax rates change.

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