Tax-exempt organizations other than those organized under 501(c)(3) or political organizations (under Section 527) will soon be able to leave off donor names and addresses from their Form 990s. The change to the annual tax filings will apply to tax years ending on or after Dec. 31, 2018, according to IRS Rev. Proc. 2018-38. Requirements for 501(c)(3) and Section 527 organizations remain the same. These organizations will continue to report the names and addresses of donors that meet certain threshold requirements as part of their Form 990, Schedule B.