The ACT is offered in September, October, December, February, April, and June in the United States, and in September, October, December, April, and June outside of the United States.

Test Dates Sep 10, 2016 Oct 22, 2016 Dec 10, 2016 Feb 11, 2017* Apr 8, 2017 Jun 10, 2017
U.S./International Registration Deadline Aug 7, 2016 Sep 16, 2016 Nov 4, 2016 Jan 3, 2017* Mar 3, 2017 May 5, 2017
Late Registration Deadline (U.S. only) Aug 19, 2016 Sep 30, 2016 Nov 18, 2016 Jan 14, 2017* Mar 17, 2017 May 19, 2017

*February registration information is only pertinent to U.S. test-takers.