The 2027 Open Enrollment Period (OEP) begins November 1, 2026, and ends January 15, 2027, in 27 states.1 The chart below shows the 2027 OEP dates for the states that use the federal Health Insurance Marketplace. Coverage begins January 1. If you have a Special Enrollment Period, coverage will begin the first day of the month after you sign up. For example, if you sign up on February 15, your cover