Finance
Sales Tax Calculator
Calculate sales tax with US state rate presets, reverse tax mode, and bulk item support.
Enter price and tax rate, then click Calculate
How is this calculated?
Normal Mode:
Tax Amount = Price × (Tax Rate / 100)
Total = Price + Tax Amount
Reverse Mode:
Pre-Tax Price = Total / (1 + Tax Rate / 100)
Tax Amount = Total - Pre-Tax PriceFAQ
Frequently asked questions about sales tax
How do I calculate sales tax?
Multiply the item price by the tax rate (as a decimal). For example, a $100 item with 8.25% tax: $100 × 0.0825 = $8.25 tax, total = $108.25.
What is reverse sales tax calculation?
Reverse calculation finds the pre-tax price from a total. Divide the total by (1 + tax rate). For example, $108.25 ÷ 1.0825 = $100 pre-tax price.
Which US state has the highest sales tax?
Tennessee, Louisiana, and Arkansas have some of the highest combined state and local sales tax rates, often exceeding 9%. California has the highest state-level rate at 7.25%.
Which states have no sales tax?
Five US states have no state sales tax: Alaska, Delaware, Montana, New Hampshire, and Oregon. However, some Alaska localities charge local sales tax.
Is sales tax included in the listed price?
In the US, sales tax is typically added at checkout and not included in the listed price. In many other countries, VAT/GST is included in displayed prices.
Is this sales tax calculator free?
Yes, completely free with no sign-up required. All calculations happen in your browser — your data is never sent to any server.