: the day when a law, rule, contract, etc., starts to be used
Examples of effective date in a Sentence
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The law’s effective date was retroactive to January 2024, so many beneficiaries received last year a one-time retroactive payment that may have amounted to thousands of dollars and higher monthly benefits, starting in 2025.—Medora Lee, USA Today, 20 Feb. 2026 Deputy City Manager Rosalynn Hughey said staff would return to the City Council in the coming months to postpone the ordinance’s effective date again, likely by another 12 months.—Devan Patel, Mercury News, 28 Jan. 2026 In November 2025 the Money Services Business Association, which signed the Senate letter in May, asked Treasury to outright postpone the January 1 effective date of the tax to at least June 1.—Carrie Brandon Elliot, Forbes.com, 20 Jan. 2026 As an example, the new effective date for the measure is now May 1, 2025.—Lori Weisberg, San Diego Union-Tribune, 14 Jan. 2026 See All Example Sentences for effective date