Arizona income tax return for S corporations. Arizona income tax return for multi-state corporations.Electronic filing of Arizona corporate income tax returns is required for the 2020 taxable year. 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. To start an Arizona S corporation, you'll need to have either a limited liability company (LLC) or a C corporation if you don't already. In this video I'm going to show you how to start a S Corporation in Arizona using ink file and I'm also going to review their service. This kit gives clear, comprehensive instructions to direct you as you complete the steps of forming your own S corporation. 1. Choose a business name for the corporation and check for availability.