This website contains a collection of forms and precedent legal documents relating to nonprofit organizations. This guide will help you understand the specifics of these templates, their benefits, and how to use them effectively.Complete if the organization is a section 501(c)(3) organization or a section 4947(a)(1) nonexempt charitable trust. Attach to Form 990 or Form 990-EZ. Since 2013, the IRS has released data culled from millions of nonprofit tax filings. Many standard forms are available below. All forms are categorized into their respective departments. Complete If the organization is a section 501(c)(3) organization or a section 4947(a)(1) nonexempt charitable trust. These guidelines below are to help you determine if your non-profit organization may be eligible for a property exemption. The purpose of Form W9 is to provide the necessary tax information for contracting organizations to complete Form 1099.