Sales Tax Calculator
Find the sales tax and total price for a purchase, or work backward from a receipt total to the price before tax.
How to use the Sales Tax Calculator
- Choose the i know the.
- Enter the amount.
- Enter the sales tax rate – Combined state + local rate.
- Press Calculate. The result updates automatically as you type.
About the Sales Tax Calculator
US sales tax is set by states, counties, cities and special districts, so the rate at the register is often a combination. Five states (Alaska, Delaware, Montana, New Hampshire and Oregon) have no statewide sales tax, though some Alaska localities charge one. Combined rates elsewhere commonly range from about 4% to over 10%.
Use the reverse mode to back sales tax out of a receipt for expense reports or bookkeeping. A common mistake is subtracting the rate from the total (multiplying by 0.9275); the correct way is to divide by 1 plus the rate.
Many states exempt or reduce tax on groceries, prescriptions or clothing. Check your local rules; results are estimates.
Formula
Tax = Price × Rate
Total = Price × (1 + Rate)
Price before tax = Total ÷ (1 + Rate)
Example: $100 at 7.25% has $7.25 tax for a $107.25 total. A $107.25 receipt divided by 1.0725 gives back $100.
Example calculation
Using the default values:
- I know the = Price before tax
- Amount = $100
- Sales tax rate = 7.25%
the calculator returns:
- Total price with tax: $107.25
- Price before tax: $100.00
- Sales tax: $7.25
Frequently asked questions
How do I calculate sales tax?
Multiply the price by the tax rate as a decimal. For 8% tax on $50, the tax is 50 × 0.08 = $4 and the total is $54.
How do I remove sales tax from a total?
Divide the total by 1 plus the rate. $54 ÷ 1.08 = $50 before tax.
Is sales tax charged on shipping?
It depends on the state. Some tax shipping charges when the item is taxable, others do not if shipping is listed separately.
Last updated: · Category: Financial calculators