Business
Sales tax calculator
Enter a price and your local tax rate. The page has no tax tables, because rates change and differ by city, county, and state.
What this means
- At 8.25%, tax is $8.25 on a $100.00 price.
- To remove tax, divide by 1 plus the rate. Subtracting the rate from the total gives the wrong answer.
What if
About this calculator
What this calculator does
It multiplies a price by the tax rate to add tax, or divides a tax-included total by one plus the rate to find the price before tax.
How it is calculated
add: tax = price * rate, total = price * (1 + rate)
remove: price = total / (1 + rate), tax = total - price
How to read the result
Rounding can differ by a cent from a receipt, because stores may round per item.
Sources and method
Standard arithmetic with no outside data. The formula is shown under How it is calculated, and unit tests check worked examples, including edge cases.
This page uses arithmetic only, with no outside data.
Questions
What rate should I use?
Your combined local rate. Check your state or city revenue department.
Why not subtract 8% from the total?
Tax was 8% of the lower pre-tax price, so you must divide by 1.08 instead.
Is VAT the same?
The math is the same for adding or removing a flat rate, though VAT rules differ.
Are some items tax-exempt?
Often, such as some groceries. Rules vary by place.