Usually, you will need to file a nonresident tax return for the state where you worked and a resident tax return for the state where you lived.
Make sure you complete your nonresident return first.
When you complete your resident return, you will get a credit for the tax that you paid to the nonresident state.
The exception is that your resident state may have a tax reciprocity agreement with the nonresident state. If that's the case, you won't need to file a return in the nonresident state.
