Still, you should dig thru and check each of those state's websites. Might take a couple hours to find the correct details
1) A few states allow you to NOT file at all in that state, if your income in just that non-resident state was less than some $$ amount. i.e. they don't want to bother processing tax files if your non-resident income was below some level.
2) BUT, most states I've seen, use the full Federal Gross as the determining factor, even if they only end up taxing a small portion.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
