Since you lived in Illinois all year, you were correct to file your Illinois return as a resident. But is Illinois your main, permanent home, or do you have a home in another state?
The issue is this: even though you lived in Illinois all year, if you were there temporarily while your main home was in Oklahoma, then your income would be taxable by both states. That's why I'm asking.
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
