Money tool
Sales Tax Calculator
Add or reverse sales tax and see the subtotal, tax amount, and final total.
Runs in your browserResult
- Subtotal
- $100.00
- Sales tax
- $7.00
- Total
- $107.00
- Effective multiplier
- 1.07
Enter the combined rate that applies to the exact location and taxable item. This does not determine nexus, exemptions, or filing obligations.
How to use this sales tax calculator
- Enter the original amount and the percentage, tax rate, discount, split, or comparison values that apply.
- Review the calculated totals, units, and assumptions. Check the inputs and units before relying on the result.
- Change one input at a time to compare another case, then copy or save the result you plan to use.
About this sales tax calculator
The Sales Tax Calculator lets you add or reverse sales tax and see the subtotal, tax amount, and final total. The controls cover only the inputs needed for the result.
You can also use it to compare results after changing one input.
Example
Add 7 percent tax to a $100 subtotal, or reverse a $107 tax-inclusive total to recover the original subtotal.
Common uses
- → add or reverse sales tax and see the subtotal, tax amount, and final total
- → compare results after changing one input
- → save an estimate for planning or comparison