Everyday Money Utility
Sales Tax Calculator
Calculate a tax amount and total price from a subtotal and a tax rate that you enter.
Calculate sales tax
Formula
Tax amount = subtotal × tax rate ÷ 100.
Total = subtotal + tax amount.
Worked example
A subtotal of 100 with an entered tax rate of 8.5% produces a tax amount of 8.50 and a total of 108.50.
Why this calculator asks you for the rate
Tax rates and taxable treatment can vary by jurisdiction, product, service, date, exemptions, and local rules. This version deliberately does not claim to know a current rate for your location. Enter the rate that applies to the calculation you are performing.
Limitations
This is arithmetic, not a determination of tax liability. It does not decide whether an item is taxable, whether an exemption applies, how combined state and local rates are sourced, or whether a published rate is current. No jurisdiction-specific tax database is used.
Privacy
The subtotal and rate are processed locally in your browser.
Common questions
Can the rate be 0%?
Yes. A zero rate produces zero tax and leaves the total equal to the subtotal.
Does the tool round?
The displayed money results are rounded to two decimal places.