Reverse Sales Tax Calculator
Calculate the original price before tax
Calculator
Results
How to Use This Calculator
Enter the Final Price
Input the total amount you paid, including sales tax, into the "Final Price" field.
Enter the Tax Rate
Input the sales tax percentage for your location into the "Tax Rate" field (for example, enter 8.25 for 8.25%).
Calculate
Click the "Calculate" button and view the results in the Results section.
Interpret Results
The calculator will show you the original price before tax and the exact amount of tax you paid. The visualization bar shows the proportion of your payment that went to tax.
Reset (Optional)
To start a new calculation, click the "Reset" button to clear all fields.
Understanding the Formula
The Reverse Sales Tax Calculator uses the following formula to determine the original price before tax:
Original Price = Final Price รท (1 + Tax Rate/100)
Once the original price is calculated, the tax amount is determined by:
Tax Amount = Final Price - Original Price
This calculator is useful when you need to determine how much of your purchase was the actual item cost versus tax, particularly helpful for:
- Business expense tracking and tax deductions
- Reimbursement calculations
- Budget analysis
- Price comparisons between locations with different tax rates