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.

---

Example Sentences

See Examples For:

effective date

The transaction has an effective date of July 1 and is expected to close around year-end.

From The Wall Street Journal ● Oct. 8, 2026

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

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

The latest of several laws and decrees published in this context appeared in June 1972 with an effective date of January 1, 1973.

From Area Handbook for Bulgaria by Violeta D. Baluyut