About this calculator
Calculate sales tax and total using your own tax rate.
Tax rates vary by jurisdiction and item, so enter the current applicable rate.
Formula
Tax = amount × rate%. Total = amount + tax.
Example
100 at 8.25% tax = 108.25 total.
Accuracy
NUMTX shows the assumptions next to the calculation so you can replace defaults with values that match your situation. For measurements, supplier rates, fees, interest, tax or regulated work, confirm important figures with the appropriate official or professional source.