I'm working with a client that has lived in Taiwan for the last 10 years and meets the bona fide residency test. He does IT work and has an Scorp registered in Wyoming. None of the larger payroll processing providers would take him on without designating a State. In my opinion, he shouldn't have to file anything with a State since he's not a resident of one. I plan to help him with payroll but want to make sure we're not missing anything. 

Also, my understanding is that his W2 income from the Scorp will be considered foreign earned income for the foreign exclusion but not the income from the K1.