Tax Calculator

Add sales tax to a price. Enter the amount and your tax rate to see the tax and the total.

Total with Tax
Price plus tax.

Usage Tip

For a quick estimate, round the rate: at about 8%, every $25 adds roughly $2 in tax. To go from a tax-included total back to the pre-tax price, divide by 1 plus the rate (divide by 1.08 for 8%).

THE MATH
Tax = price × tax rate%
Total = price + tax
Sales tax is added at the register on top of the listed price (in the US). The rate is the sum of state, county, and local taxes for that address.
Some items such as groceries and prescriptions are taxed differently or exempt in many states.
US prices are usually shown pre-tax, so the total at checkout is higher than the sticker.
Combined rates differ by city and even by street; online sellers charge tax based on the shipping address.
Certain goods are exempt or taxed at a reduced rate depending on the state.
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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.