1. Complete the non-profit application (Form 1005). 2. Attach a copy of the 501(c) (3) documentation to the application. 3. Attached completed signed IRS form W-9. 4. Attach copy of certified articles of incorporation. 5. Attach list of all officers and directors of the non-profit organization. 6. Attach applicable certificate of exemption for state sales tax. 7. In order to be exempt from sales tax, the non-profit must submit documentation from the organization’s state department, and more.