Amazon began calculating, collecting, and remitting sales and use tax for all orders shipped to customers in Iowa and Alabama on January 1, 2019.
Here is the full list to date from Amazon Seller Central:
|State||Effective Date||State Resource|
* Digital products purchased by customers with a Pennsylvania billing address will continue to follow your existing Tax Calculation Service settings.
** Amazon will collect Minnesota sales tax on behalf of all sellers for sales shipped to customers in Minnesota.
Click here to visit Amazon's Marketplace Tax Collection FAQ.