Sales Tax Calculator
Enter an amount and a tax rate to see the sales tax added and the final total. The results update as you type.
About Sales Tax Calculator
Sales tax is added on top of a price at checkout, and the rate varies by place. This calculator takes a pre tax amount and a rate and shows both the tax and the total you will pay.
It is handy for budgeting a purchase, checking a receipt, or quoting a price that includes tax.
How to Use
- Enter the amount before tax.
- Enter the sales tax rate as a percentage.
- Read the tax amount and the total with tax.
Frequently Asked Questions
How is sales tax calculated?
Multiply the amount by the tax rate and divide by 100 to get the tax, then add it to the amount. The tool does both steps instantly.
What tax rate should I use?
Use the combined rate that applies where the sale happens, since rates differ by state, county, and city. Enter whatever rate you need.
Is the tool private?
Yes. The calculation runs in your browser and nothing is uploaded.
About Matt George
I'm Matt George, a software engineer in the startup space. I run my own shop building software for early-stage founders, and I love making free tools and experiences that people actually use. Enjoy using Sales Tax Calculator!