501(c)(3) exemptions apply to corporations, and any community chest, fund, cooperating association or foundation, organized and operated exclusively for religious, charitable, scientific, testing for public safety, literary, or educational purposes, to foster national or international amateur sports competition, to promote the arts, or for the prevention of cruelty to children or animals. These bodies are often referred to in shorthand form as "Friends of" organizations.
Another provision, 26 U.S.C. § 170, provides a deduction, for federal income tax purposes, for some donors who make charitable contributions to most types of 501(c)(3) organizations, among others. Regulations specify which such deductions must be verifiable to be allowed (e.g., receipts for donations over $250). Due to the tax deductions associated with donations, loss of 501(c)(3) status can be highly challenging to a charity's continued operation, as many foundations and corporate matching programs do not grant funds to a charity without such status, and individual donors often do not donate to such a charity due to the unavailability of the deduction.
Testing for public safety is described under section 509(a)(4) of the code, which makes the organization a public charity and not a private foundation, but contributions to 509(a)(4) organizations are not deductible by the donor for federal income, estate, or gift tax purposes.
The two exempt classifications of 501(c)(3) organizations are as follows:
A public charity, identified by the Internal Revenue Service (IRS) as "not a private foundation," normally receives a substantial part of its income, directly or indirectly, from the general public or from the government. The public support must be fairly broad, not limited to a few individuals or families. Public charities are defined in the Internal Revenue Code under sections 509(a)(1) through 509(a)(4).
A private foundation, sometimes called a non-operating foundation, receives most of its income from investments and endowments. This income is used to make grants to other organizations, rather than being dispersed directly for charitable activities. Private foundations are defined in the Internal Revenue Code under section 509(a) as 501(c)(3) organizations, which do not qualify as public charities.
Before donating to a 501(c)(3) organization, a donor may wish to review IRS Publication 78, which lists organizations currently exempt under 501(c)(3). Donors may also verify 501(c)(3) organizations on the web-based, searchable IRS list of charitable organizations as well as on lists maintained by the states, typically on states' Departments of Justice websites. Churches, however, have specific requirements to obtain and maintain tax exempt status; these are outlined in IRS Publication 1828: Tax guide for churches and religious organizations. This guide clearly outlines activities allowed and not allowed by churches under the 501(c)(3) designation. A private, nonprofit organization, GuideStar, also provides reputable and detailed results for web-based searching to verify information on 501(c)(3) organizations.
Consumers may file IRS Form 13909 with documentation to complain about inappropriate or fradulent (i.e., fundraising, political campaigning, lobbying) activities by any 501(c)(3) tax-exempt organization.