- The MEDICARE Open Enrollment period starts on October 15, 2024, and continues through December 7, 2024, for coverage beginning January 1, 2025.
- The Affordable Care Act (ACA) Open Enrollment period for 2025 health plans starts November 1, 2024, and runs through January 15, 2025, in most states. However, for coverage beginning January 1, 2025, you must enroll by December 15, 2024. The last day to enroll in or change Marketplace plans for the year with coverage starting February 1 is January 15, 2025.
- States that use their own marketplaces and enrollment platforms can establish different end dates for the annual enrollment period as long as they conclude on or after December 15, 2024. Other states may also be subject to an extension in 2025. States with state-run exchanges can issue last-minute extensions, and the federal government can issue an extension for all states using the federal marketplace.