Tax & Business
Sales Tax Calculator
Quickly calculate sales tax from the pre-tax price or reverse-calculate the original price from the total.
Guide
How to use the Sales Tax Calculator
The Sales Tax Calculator helps you make a quick estimate, compare scenarios, and understand the numbers behind the result. It is designed for fast planning, with enough context to make the answer useful instead of just a number.
- Enter the amount, jurisdiction, filing details, or business figures that match your situation.
- Review the estimated tax, net amount, rate, or return shown in the result panel.
- Compare scenarios before making a purchase, payroll, investment, or tax planning decision.
Method
How this calculator works
It multiplies the taxable amount by the tax rate or reverses the formula to back tax out of a total.
This calculator is useful for estimating checkout totals and reverse-calculating pre-tax prices.
Because assumptions matter, try a few values that represent optimistic, typical, and conservative cases.
Tax and business results are estimates. Rules vary by jurisdiction and can change, so verify important decisions with official guidance or a qualified professional.
Example
Worked example
A $250 purchase in a jurisdiction with an 8.25% combined rate carries $20.63 of tax, for a $270.63 total. Working backwards: a $270.63 receipt divided by 1.0825 recovers the $250 pre-tax price — handy for expense reports that need the net amount.
FAQ
Common questions
How do I back out sales tax from a total?
Divide the total by 1 plus the rate. A $107.25 receipt in a 7.25% jurisdiction works back to a $100.00 pre-tax price and $7.25 of tax. Reverse mode in this calculator does exactly that division.
Which US states have no sales tax?
Delaware, Montana, New Hampshire, and Oregon have no state or local sales tax; Alaska has no state tax but allows local rates. Everywhere else, the combined state-plus-local rate is what you actually pay, and it varies by city and county.
Why doesn't my receipt match the state tax rate?
Counties, cities, and special districts stack their own rates on top of the state rate. Two stores a few miles apart can charge noticeably different combined rates — always use the local combined rate, which is what this calculator expects.
What information do I need for the Sales Tax?
You usually need price, sales tax rate, and whether the price already includes tax. You can change the inputs and recalculate as many times as needed.
How does the Sales Tax calculate the result?
It multiplies the taxable amount by the tax rate or reverses the formula to back tax out of a total.
Are the results exact?
Tax and business results are estimates. Rules vary by jurisdiction and can change, so verify important decisions with official guidance or a qualified professional.
Related
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Sources