Form 309 is asking you to confirm the income you earned in Arizona that is also being picked up on your resident (California) return.
Since you were a full-year resident of California, you are taxed on all income regardless of source. Your other state tax credit on your California return will offset the taxes paid to Arizona, so you are not paying taxes twice.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
