Reverse Sales Tax Calculator
Calculate the original price before tax from a total amount including tax
Results
How this was calculated:
Example Calculations
| Total Amount | Tax Rate | Pre-tax Amount | Tax Amount |
|---|---|---|---|
| $108.90 | 8.9% | $100.00 | $8.90 |
| $235.20 | 20% | $196.00 | $39.20 |
| $527.34 | 7.5% | $490.55 | $36.79 |
Formula Used
Pre-tax Amount = Total Amount / (1 + (Tax Rate / 100))
Tax Amount = Total Amount – Pre-tax Amount
How to Use the Reverse Sales Tax Calculator
Step 1: Enter the Total Amount
Input the total price paid (including tax) in the “Total Amount” field. This is the final price that appears on your receipt or invoice.
Step 2: Input the Sales Tax Rate
Enter the applicable sales tax rate as a percentage in the “Sales Tax Rate” field. If you don’t know the exact rate, you can look up the current sales tax rate for your location online.
Step 3: Click the Calculate Button
Press the “Calculate” button to process your inputs. The calculator will instantly determine the original price before tax and the tax amount.
Step 4: Review the Results
Examine the calculated results showing the pre-tax amount, tax amount, and total amount. The explanation section will show you exactly how these values were calculated.
Step 5: Use the Clear Button for New Calculations
If you need to perform another calculation, click the “Clear” button to reset all fields and start fresh with new values.