How do you back tax out of a price?

Divide the gross price by (1 + rate/100). For example, a gross of 120 at a 20% rate gives a net of 120 ÷ 1.20 = 100, so the tax portion is 20.

What is the difference between net and gross price?

The gross price includes tax, while the net price is the amount before tax is added. This tool finds the net from the gross.

Is my data sent anywhere?

No — every calculation runs locally in your browser and nothing is uploaded.

Reverse Sales Tax Calculator

Strip VAT, GST or sales tax out of a tax-inclusive price.

Reverse sales tax calculator

Already know the tax-inclusive (gross) total and need to find the price before tax? Enter the gross amount and the tax rate, and this calculator backs the tax out for you — showing both the net price and the exact tax portion.

The formula is simply gross ÷ (1 + rate ÷ 100). Everything runs in your browser, so no figures ever leave your device.