A familiar situation
At checkout, a listed price may not include local sales tax. Enter the pre-tax amount and rate to estimate the tax portion and total, then verify the rate for the actual location.
How to use this calculator
- Enter price before tax, tax rate.
- Select Calculate to see the answer and its breakdown.
- Keep a scenario, change an input and compare the results.
Use consistent units and check the assumptions below before applying the result.
How sales tax is calculated
Tax is calculated as a percentage of the entered net price. The rate must match the location and transaction; exemptions, reduced rates and tax-inclusive pricing are outside this estimate. Formula: Tax = price × rate; total = price + tax. Use the displayed details to inspect the intermediate amounts and replace example assumptions with terms from your own quote or records.
Tax = price × rate; total = price + tax.At 8% tax, a $50 item costs $54 and includes $4 of tax.
Assumptions & useful context
The result depends on the values you enter and the method described above. Displayed numbers may be rounded; calculations use the unrounded values. Check that this model matches your situation before relying on it.
Financial projections use your assumptions. Actual returns, lender terms, fees and tax rules can differ; these results do not guarantee a future outcome.
Frequently asked questions
Sales Tax Calculator: what does the result include?
Enter the combined rate that applies to the transaction and product in the relevant jurisdiction. Reduced rates and exemptions require a different rate or a separate calculation.
Sales Tax Calculator: which assumptions matter most?
This version starts from a net price before tax. To recover a net price from a gross amount, divide by one plus the applicable rate.