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Sales Tax Calculator

Quickly compute state or local sales tax amounts, total cost at checkout, or back-calculate pre-tax item prices.

Interactive Sales Tax Calculator

Financial

Checkout Total

$108.50
Tax Amount: $8.50

How to Use the Sales Tax Calculator

  • Enter price amount and sales tax percentage rate.

Formula & Calculation Methodology

Total = Pre-Tax Amount × (1 + Sales Tax Rate)

Our mathematical algorithms adhere to standard scientific and financial guidelines to deliver maximum accuracy.

Frequently Asked Questions

How do I calculate pre-tax price from total price?

Pre-tax price = Total Price / (1 + Tax Rate decimal).

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