To simplify compliance for grantors and contributors to tax-exempt organizations, the IRS recently issued an updated revenue procedure (Rev. Proc. 2018-32) that combines previously scattered guidance on deductibility and reliance issues. The new revenue procedure explains when grantors and contributors may rely on a listing of an organization on an IRS database of organizations eligible to receive contributions under Sec. 170 for purposes of determining whether the grants or contributions may be deductible under Sec. 170.
The IRS maintains and updates two different publicly available databases on organizations eligible to receive tax-deductible contributions under Sec. 170. The first lists organizations that are eligible to receive tax-deductible charitable donations (eligible organization list), and the second is an extract of certain information concerning tax-exempt organizations from the IRS electronic Business Master File (the EOB MF Extract).
Historically, the eligible organization list was maintained in print form in IRS Publication 78.