I've looked at Avatax, and at Taxjar. They're both cost prohibitive at this time. If my sales ever spike to over half a million a year per state they might be options.
Right now the sales tax situation with the states is random and crazy, and they're writing new laws and then fining retroactively for noncompliance. The only sensible option is to block states until they get their **** sorted out.
So just to be clear: if I remove a state from the address zone, it is not possible to place an order with a shipping address in that state - or is it not possible to place an order with the credit card address in that state?
I'd be interested in a modification that would allow me to turn states on/off, like countries, instead of removing them.