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Sales tax inclusive

Split a tax-inclusive total into the pre-tax price and the sales tax.

Built and maintained by The NumberPrism Editorial TeamEditorial policy

Your details

Results update as you type. The formula and assumptions are explained below the calculator.

Price before tax

$100.00

Sales tax$8.00
Price per item before tax$100.00
Tax per item$8.00
Tax share of total7.4%

Estimate only: assumes one rate applies to the whole total. Exempt goods, rounding rules and local rates can change the result.

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What does this tool do?

When a price already includes sales tax, dividing by 1 plus the tax rate recovers the net price. The difference is the tax collected.

The Formula

Net price = Total ÷ (1 + Tax rate ÷ 100)

Frequently Asked Questions

Why is the tax not simply 8% of the total?

The tax is 8% of the net price, not of the tax-inclusive total. Dividing by 1.08 reverses the addition correctly.

Does this work for VAT?

Yes, the same reverse calculation applies. Use the VAT rate and see the VAT reverse calculator for a dedicated version.