You must enter the sales tax rate of your area.
The state
sales tax rate is the rate that is charged on the tangible personal property
(and sometimes services) across the state. These usually range from 4-7%. For
example, the state rate in New York is 4% while the state sales tax rate in
Tennessee is 7%.
I am attaching
the following attached tools for your reference. Enter your zip code to obtain the information.
https://www.taxjar.com/sales-tax-calculator/
https://apps.irs.gov/app/stdc/