On June 21, 2018, the U.S. Supreme Court issued its decision in the South Dakota v. Wayfair, Inc. case which ruled that states may charge tax on purchases made from out-of-state sellers, even if the seller does not have a physical presence in the taxing state. Each state has their own different requirements on when online retailers begin reporting tax to them, aka the Remote Seller Tax Nexus.

In accordance with these laws, any RIVALS group / Merchline.com powered storefront is collecting sales tax for orders shipping to any of the following states:  

California
Colorado
Florida
Georgia
Illinois
Indiana
Michigan
Minnesota
North Carolina