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Effective Dates for Sections of Title 10 of the Code of Federal Regulations in 2026

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Current Section

Effective Date

Federal Register Notice

Parts 1, 2, 10, 11, 19, 21, 25, 26, 30, 40, 50, 51, 53, 70, 72, 73, 74, 75, 95, 140, 150, 170, and 171

April 29, 2026

03/30/2026

Part 51

April 29, 2026

03/30/2026

Part 50

April 24, 2026

04/24/2026

Part 72

April 13, 2026
[Confirmation of the effective date of April 13, 2026, for the direct final rule that was published January 28, 2025 (91 FR 3635)]

03/18/2026

Part 50

April 8, 2026

04/08/2026

Part 72

April 13, 2026
[Unless significant adverse comments are received by February 27, 2026]

01/28/2026

Part 9

March 6, 2026

03/06/2026

Part 72

February 23, 2026
[Confirmation of the effective date of February 23, 2026, for the direct final rule that was published December 8, 2025 (90 FR 56657)]

01/30/2026

Part 50

January 26, 2026
[Confirmation of the effective date of January 26, 2026, for the direct final rule that was published September 26, 2025 (90 FR 46319​)]

01/27/2026

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Page Last Reviewed/Updated Tuesday, April 28, 2026

Page Last Reviewed/Updated Tuesday, April 28, 2026