TaxJar provides real-time tax rates for U.S and international addresses. The following fields are required:
To ensure complete accuracy in tax calculation, we recommend that all your configured tax methods are set to use TaxJar exclusively and you're not mixing between custom rules and other tax providers.
Under Configuration > Taxes menu, click Add new to create a new tax method and select "TaxJar" as your tax type. Give it a name (e.g. "Products"). If you need to define a special tax category (e.g. you need to tax differently for shipping), you can enter a TaxJar tax code otherwise leave the tax code empty and click Save.
Click on Test connection to make sure your credentials work. Then Save.
Please note you can define as many different tax methods as needed. Any of your product variants, handling or shipping can now associate to these tax methods and will be treated as taxable.
A customer may be exempt from taxes if they have a valid tax exemption number. You can enter the tax exemption number for a customer under the People > Customers menu.