Enrollment extensions for two key dates under the Affordable Care Act (ACA) were announced last week. 1 – Enrollment Deadline for January 1, 2014 Health Insurance Plans You now have eight extra days — until December 23, 2013 (originally December 15) — to enroll** and pay for* coverage with an effective date of January 1, 2014. *Update: 12/13/13: According to an HHS ruling, you now have until December 31, 2013