Selling a product that is taxed? No problem! πΈ Head on over to Settings > Product, Invoice and Payment Settings > Tax Rates:
Select + Add a Tax Rate. From here, you will be prompted to select the Tax Rate Type:
Federal
State
County
Other
After that, type the rate in the Tax Rate. You can also choose to set this Tax Rate as a default for either all Products or all Services going forward if turned on, which will eliminate the need for you to add these Rates in manually.