Calculators
Sales Tax Calculator
Find sales tax, final price, pre-tax price, or tax rate.
Pre-tax price is required.
About This Tool
Use the sales tax calculator for checkout estimates, receipts, or invoices. Choose whether you know the pre-tax price and rate, the tax-included total and rate, or the pre-tax and final amounts.
How To Use It
- Choose the calculation mode that matches the amounts you know.
- Enter the price, total, or tax rate requested by the labels.
- Review the tax amount, pre-tax price, final price, and effective rate.
Examples
8.25% sales tax on 120
Enter 120 as the pre-tax price and 8.25 as the tax rate. The tax is 9.90 and the final price is 129.90.
Reverse tax from a 54.13 total
Enter 54.13 as the tax-included total and 8.25 as the rate to estimate the original pre-tax price and tax portion.
Useful Notes
Reverse sales tax
When the total already includes tax, the pre-tax price is total divided by 1 plus the tax rate as a decimal.
Local estimate
Calculations run in your browser and do not look up city, county, or state tax rules automatically.
FAQ
Does this know my local sales tax rate?
No. Enter the rate that applies to your purchase, receipt, or invoice.
Can I remove tax from a total?
Yes. Choose the tax-included total mode and enter the total plus the tax rate.
How do I find the effective tax rate?
Choose the rate from pre-tax and final price mode. The calculator divides the tax difference by the pre-tax amount.
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