Q. Do I need to file taxes in New York?
A. Yes, probably. But, "nobody" does. See http://money.cnn.com/2013/06/28/pf/taxes/business-traveler-tax-threat/ If you live in a state without an income tax (e.g. FL), it’s more likely you should file in the work state, if you meet the filing threshold. You can't use the "it all comes out even" rationale for not filing.
