Reverse Sales Tax Calculator

$3.13 + 3% tax= $3.04 Original Price (before tax)

See exactly how we calculated the pre-tax price from your tax-inclusive amount. Our step-by-step breakdown shows the precise mathematics behind removing sales tax from a total price.

Quick Reference

Final Price (with tax)$3.13

Tax Rate (%)3%

Tax Amount$0.09

Original Price (before tax)$3.04

Calculation Steps

Final price with tax: $3.13

Convert tax rate to decimal: 3% ÷ 100 = 0.030

Calculate divisor (1 + tax rate): 1 + 0.030 = 1.030

Divide final price by divisor: $3.13 ÷ 1.030 = $3.04

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How It Works

To find the original price before tax, divide the tax-inclusive amount by (1 + tax rate as decimal). This calculator handles the math for you, showing each step of the process.

The Formula

Original Price = Final Price ÷ (1 + Tax Rate%/100)

Example Calculation

For a final price of $3.13 with 3% tax rate, divide $3.13 by (1 + 3/100) to get the original price of $3.04. The tax amount is $0.09.