There's an existing interstate tax system called streamlined sales tax that could be used [1]. This is the system that computes and pays state sales tax on int

There's an existing interstate tax system called streamlined sales tax that could be used [1]. This is the system that computes and pays state sales tax on internet purchases and was implemented around 2008. 1. https://www.streamlinedsalestax.org/ https://www.streamlinedsalestax.org/