Reverse Sales Tax Calculator

$3200.00 + 10% tax= $2909.09 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)$3200.00

Tax Rate (%)10%

Tax Amount$290.91

Original Price (before tax)$2909.09

Calculation Steps

Final price with tax: $3200.00

Convert tax rate to decimal: 10% ÷ 100 = 0.100

Calculate divisor (1 + tax rate): 1 + 0.100 = 1.100

Divide final price by divisor: $3200.00 ÷ 1.100 = $2909.09

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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 $3200.00 with 10% tax rate, divide $3200.00 by (1 + 10/100) to get the original price of $2909.09. The tax amount is $290.91.