1. How do I form a corporation? 2. How do I form a nonprofit corporation?How to File as an S Corp in Arizona in 7 Steps. Filing for S corporation status in Arizona requires meeting certain eligibility requirements. This guide will help you file formation documents, get tax identification numbers, and set up your company records. Corporations, partnerships, S corporations, and fiduciaries can now electronically file their income taxes to the Arizona Department of Revenue (ADOR). Electronically filed returns. The electronic filing threshold for corporate returns required to be filed on or after January 1, 2024,. Conducting a successful annual meeting requires knowledge of the association's documents, planning, organization, preparation and execution of the plan. Consider Electing S-Corp or C-Corp Taxation.