effective date

American  

[i-fek-tiv dayt, ee-fek-tiv] / ɪˈfɛk tɪv ˈdeɪt, iˈfɛk tɪv /

noun

1. the date at which a law, treaty, or regulation comes into effect.

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Example Sentences

See Examples For:

effective date

But on Monday, a federal district court judge in Massachusetts postponed the effective date on the grounds that—and I am paraphrasing here—the rule is mind-bendingly stupid and would create a needless, self-inflicted economic catastrophe.

From Slate ● Sep. 17, 2026

Students already in the U.S. will move to the new system automatically, with their stays capped at four years from the rule’s effective date during the fall semester.

From Los Angeles Times ● Jul. 17, 2026

The company also plans to pay professional fees of more than $245 million in full, while as much as $223 million in administrative expenses would remain unpaid as of the bankruptcy plan’s effective date.

From The Wall Street Journal ● May 14, 2026

But administration officials told the company in December of a new, later effective date for the policy, leading to fewer gains from the credits than anticipated.

From BBC ● Feb. 10, 2026

As discussed in the Notice of Policy Decision and Public Meeting, the Copyright Office has concluded that the effective date of copyright restoration is January 1, 1996.

From Supplementary Copyright Statutes, US Copy. Office by Library of Congress. Copyright Office