Sales Tax Calculator
Calculate sales tax on purchases
About this calculator
A sales tax calculator helps you determine the exact amount of tax you'll pay on purchases and calculate the total cost including tax. This tool is essential for budgeting, comparing prices across different tax jurisdictions, and understanding the true cost of purchases. Whether you're shopping online, planning major purchases, or running a business, knowing the sales tax amount beforehand helps you make informed financial decisions and avoid surprises at checkout.
How to use
Enter the purchase amount and your local sales tax rate (as a percentage) into the calculator. The tool will instantly calculate the tax amount and display the total cost including tax. Some calculators also allow you to work backwards by entering the total amount to find the pre-tax price.
Frequently asked questions
How do I find my local sales tax rate?
Check your state's tax website, recent receipts, or search online for your city and state tax rates. Rates vary by location.
Can I calculate tax for multiple items at once?
Yes, simply add up all item prices first, then apply the sales tax rate to the total purchase amount.
Do all purchases have sales tax?
No, some items like groceries, prescription medicines, and services may be exempt from sales tax depending on your location.