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SECTION 4. EFFECT ON OTHER
Internal Revenue Bulletin 1999-15 · 2026-10-03 edition · updated 2026-10-04 · United States
REVENUE PROCEDURES
.01 Rev. Proc. 98–28, 1998–15 I.R.B. 14, is obsolete except as provided in section 5.02 of this revenue procedure.
.02 This revenue procedure does not affect the effective date provisions of Rev. Rul. 86–124, 1986–2 C.B. 27. Those effective date provisions will remain operative at least until the Service publishes a new revenue ruling that conforms the approach to effective dates set forth in Rev. Rul. 86–124 to the general approach taken in this revenue procedure.
26 CFR 601.201: Rulings and determination letters. (Also Part I, sections 25, 103, 143; 1.25–4T, 1.103–1, 6a.103A–2.)
Rev. Proc. 99–22
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