25 CFR § 1000.1820 - When will the retrocession become effective?

---
identifier: "/us/cfr/t25/s1000.1820"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "25 CFR § 1000.1820 - When will the retrocession become effective?"
title_number: 25
title_name: "Indians"
section_number: "1000.1820"
section_name: "When will the retrocession become effective?"
chapter_name: "OFFICE OF THE ASSISTANT SECRETARY, INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR"
part_number: "1000"
part_name: "ANNUAL FUNDING AGREEMENTS UNDER THE TRIBAL SELF-GOVERNMENT ACT AMENDMENTS TO THE INDIAN SELF-DETERMINATION AND EDUCATION ACT"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "25 U.S.C. 5373"
regulatory_source: "89 FR 100245, Dec. 11, 2024, unless otherwise noted."
cfr_part: "1000"
---


# 1000.1820 When will the retrocession become effective?

The retrocession becomes effective on the date that is mutually agreed to by the parties in writing. In the absence of a mutually agreed upon effective date, the retrocession becomes effective on the earlier of:

(a) One year after the date the Tribe/Consortium submits its notice of retrocession; or

(b) The date the funding agreement expires.