26 CFR § 1.638-2 - Effective date.

---
identifier: "/us/cfr/t26/s1.638-2"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "26 CFR § 1.638-2 - Effective date."
title_number: 26
title_name: "Internal Revenue"
section_number: "1.638-2"
section_name: "Effective date."
chapter_name: "INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY"
subchapter_number: "A"
subchapter_name: "INCOME TAX"
part_number: "1"
part_name: "INCOME TAXES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "26 U.S.C. 7805, unless otherwise noted."
regulatory_source: "T.D. 6500, 25 FR 11402, Nov. 26, 1960; 25 FR 14021, Dec. 21, 1960; T.D. 9989, 89 FR 17606, Mar. 11, 2024, unless otherwise noted."
cfr_part: "1"
---


# 1.638-2 Effective date.

The specific requirements and limitations of § 1.638-1 apply on and after December 30, 1969.

[T.D. 7277, 38 FR 12742, May 15, 1973]