Normally, to take advantage of an exemption, nonprofits must provide the business with an exemption certificate (i.e. You are automatically exempt as a 501c3 tax exempt organization, but will need to submit a copy of your IRS Letter of Determination.Churches may qualify as nonprofits for property tax exemptions under Arizona law even if they do not have a 501(c)(3) letter from the IRS. To receive taxexempt status, an organization must meet a specific description and, for Section 501(c)(3) status, complete and submit an application. This guide covers the required filings to maintain a nonprofit corporation in Arizona. Show All Answers. 1. Nonprofits with no physical presence need to publish unless their registered agent is located in Pima or Maricopa county. File Initial Report. You do not form a tax exempt corporation – you form a nonprofit corporation and then apply to the IRS for tax exempt status. In the United States there are approximately 1,600,000 nonprofit organizations of which about 800,000 are charities.