how are the services provided? do you have a physical presence in the state where and when providing these services? if the answer to the second question is yes, I suggest you not even try to use Turbotax. it's not designed to handle your multistate taxation issue. seek the help of a tax pro. your presence in a state when providing services probably subjects you to that state's income tax laws (just like ballplayers who have to file income tax returns in every state they play a game in that has a personal income tax - that's right some have to file state income tax returns in 20 or more states)
