Select from the list below to create a checklist pertinent to your particular business that will direct you to most of the business forms you may need. How to start a business in Arizona in 8 steps, from legally registering your business, to maximizing profit from your first sale.Each student needs to meet a minimum of 120 total credits. For most small businesses, registering your business is as simple as registering your business name with state and local governments. To register, you'll need to fill out and file a Joint Tax Application (JT-1). Step 2: Understand the Arizona Rental Property Laws and Create a Legal Contract for Clients. The Arizona Commerce Authority offers a wide range of programming to support small businesses around the state such as the Small Business Checklist. Businesses are also subject to corporate income tax. Director of Operations: Powering Massive Growth in a Fast-Paced Company. The Carin Nguyen Team with Real Broker.