The general rule is: your report all your income on your home state return, even the income earned out of state. You file a non-resident state return for the state you worked in (or had income from) and pay tax to that state. Your home state will give you a credit, or partial credit, for what you paid the non-resident state. But as others have said, it depends on the states and the details of the income.
Q. How do I separate Income from 2 states so that State filings are accurate?
A. In the TurboTax interview, for the non resident state, you will be given screens to allocate portions of each income item (wages, rent, interest, etc). For some states, wages are allocated at the W-2 screen in the federal section (box 15 has the state abbreviation).
