The IRS recently issued Rev. Rul. 2009-18 declaring certain guidance documents as now obsolete due to the issuance of the comprehensive 403(b) regulations issued back in 2007:
The following IRS documents are declared obsolete "except to the extent described":
- Notice 90-73 (1990-2 CB 353)
- Notice 92-36 (1992-2 CB 364)
- Notice 89-23 (1989-1 CB 654) (except to the extent described in the last paragraph of “Treatment of Controlled Groups that Include Tax-Exempt Entities” section of the preamble to Treasury Decision 9340 at 72 FR 41138, and 2007-2 CB 499)