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Definition of gross income (Arizona state tax filing requirements)
Disclaimer: I am not a tax professional. Please don't rely on this answer in lieu of professional advice. If your sole source of Arizona income is your commercial property, use the number on line 17 of your federal form 1040. This number is derived from your federal Schedule E. If you have multiple properties (or other business income from S corporations or LLCs), use only the Schedule E amount pertaining to the AZ property.