The ACT National Test Dates
| Test Date | Registration Deadline | (Late Fee Required) |
|---|---|---|
| September 9, 2017 | August 4, 2017 | August 5–18, 2017 |
| October 28, 2017 | September 22, 2017 | September 23–October 6, 2017 |
| December 9, 2017 | November 3, 2017 | November 4–17, 2017 |
| February 10, 2018 | January 12, 2018 | January 13–19, 2018 |
| April 14, 2018 | March 9, 2018 | March 10–23, 2018 |
| June 9, 2018 | May 4, 2018 | May 5–18, 2018 |
| July 14, 2018 | June 15, 2018 | June 16-22, 2018 |