Reverse Sales Tax Calculator

$2.50 + 28% tax= $1.95 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)$2.50

Tax Rate (%)28%

Tax Amount$0.55

Original Price (before tax)$1.95

Calculation Steps

Final price with tax: $2.50

Convert tax rate to decimal: 28% ÷ 100 = 0.280

Calculate divisor (1 + tax rate): 1 + 0.280 = 1.280

Divide final price by divisor: $2.50 ÷ 1.280 = $1.95

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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 $2.50 with 28% tax rate, divide $2.50 by (1 + 28/100) to get the original price of $1.95. The tax amount is $0.55.