Enter values and select Calculate to see your result.
Add sales tax or recover the pre-tax price from a total
Enter the applicable combined tax rate for your location.
How to use the Sales Tax Calculator
Add sales tax to a price or recover the pre-tax amount from a tax-inclusive total.
- Enter amount and combined sales-tax rate.
- Choose Add tax or Remove tax.
- Calculate tax and before-or-after-tax amount.
Sales Tax Calculator formula
Tax added = net × rate; net removed = total ÷ (1 + rate).
Worked example
Inputs: $100 with an 8% sales-tax rate using Add tax.
What to expect: Estimated tax is $8 and the tax-inclusive total is $108.
How to read your result
Use the combined rate for the purchase location; item exemptions can change real tax.
Frequently asked questions
Can I remove tax from a receipt?
Yes. Choose Remove tax and enter the tax-inclusive total.
Does it know local exemptions?
No. It applies only the rate and mode entered.