All forms are in PDF format and are fillable (you can type in them). We recommend that you type the information so the documents are legible.Which Corporations Must File a Return? Arizona income tax return for multi-state corporations. Electronic filing of Arizona corporate income tax returns is required for the 2020 taxable year. This Act requires corporations, partnerships and other business entities to submit a form providing certain Beneficial Ownership Information (BOI). Search our website for available business names and resources to help you through the filing process. OFFICERS - list the name and business address of all principal Officers of the corporation.