Sales Tax Calculator

The Sales Tax Calculator by SEO Tools System is a free online tool that adds or removes sales tax from a price. Enter an amount and a tax rate, and the tool shows the tax and the total useful for shopping, invoicing, and bookkeeping.

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Result

Net Amount
Tax Rate
Gross Amount
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The Sales Tax Calculator by SEO Tools System is a free online tool that adds or removes sales tax from a price. Enter an amount and a tax rate, and the tool shows the tax and the total useful for shopping, invoicing, and bookkeeping.

What is a Sales Tax Calculator?

A sales tax calculator works out the tax on a price and the resulting total. It can add tax to a pre-tax amount or work backward to find the pre-tax price from a total that already includes tax. This makes it handy for both buyers and sellers.

Sales Tax Formulas

Tax amount: price × (tax rate ÷ 100).

Total with tax: price + tax amount.

For example, $100 at 8% tax adds $8, for a total of $108.

How Does the Sales Tax Calculator Work?

You enter the amount and the tax rate, and the tool calculates the tax and total. To remove tax, it works backward from a tax-inclusive total to find the original price.

Features of SEO Tools System's Sales Tax Calculator

Add or Remove Tax — Calculate totals or work back to the pre-tax price.

Any Tax Rate — Enter the rate that applies to you.

Instant Results — Get the tax and total immediately.

No Software Needed — Runs in your browser.

Free to Use — No signup required.

How to Calculate Sales Tax using SEO Tools System?

  • Open the Sales Tax Calculator on SEO Tools System.
  • Enter the price amount.
  • Enter the sales tax rate.
  • Choose to add or remove tax.
  • View the tax amount and total.

Sales Tax Calculator FAQs

How do I add 8% sales tax to a price?

Multiply the price by 0.08 to get the tax, then add it to the price. The calculator does this for you.

Can it find the price before tax?

Yes. Enter a tax-inclusive total and the rate, and the tool works backward to the original pre-tax price.

Can I apply a discount first?

Yes. Use our Discount Calculator to get the sale price, then add tax here.

Is the Sales Tax Calculator free?

Yes. It is free to use with no account required.

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