The short answer
November 1 through January 15. That is the yearly window HealthCare.gov lists for enrolling in, renewing, or changing a Marketplace health plan. Their guide says to enroll by December 15 if you want coverage that can start January 1. Enroll from December 16 through January 15 and coverage can start February 1. Full dates are on the HealthCare.gov dates and deadlines page.
Why these dates matter if you work for yourself
If you are a freelancer, contractor, or solo business owner, this is usually the main calendar to watch for individual Marketplace coverage. You are not waiting on an employer open season. You are working off the federal Marketplace window.
Outside that window, HealthCare.gov describes another path called a Special Enrollment Period for certain life changes. Their examples include losing other coverage, getting married, having a baby, or moving. Medicaid and CHIP are different. HealthCare.gov says you can apply for those any time of year. I do not decide those rules for you. I point you to the official pages and help you compare options in plain words.
The two deadlines most people mix up
December 15 is the date tied to a January 1 start. Miss it and you are not done for the season. HealthCare.gov still lists January 15 as the end of Open Enrollment. Coverage for later enrollments can start February 1 after you pick a plan and pay any first premium the carrier requires.
Job-based plans often run on their own calendar. If your spouse has coverage at work, that open season may not match the Marketplace dates. Check both.
What to gather before November 1
I tell people to write down household size, estimated income for the coverage year, doctors you want to keep, and prescriptions you take. Self-employed income can bounce around. HealthCare.gov asks for estimated net self-employment income for the year you want coverage, not last year's tax return alone. Their self-employed coverage guide walks through that.
During the application, the Marketplace also checks whether savings such as premium tax credits may apply, based on income and household size. I do not quote dollar amounts here because every household is different, and I never promise a result.
How many people use this window
A lot of households rely on this same season. CMS reported that about 23.1 million people selected or were automatically re-enrolled in Marketplace coverage during the 2026 Open Enrollment Period. That is why the dates matter. Millions of people, including self-employed workers, move through the same calendar.
If you already have coverage and want to understand the tax side after you enroll, I wrote about how self-employed people can deduct health insurance premiums. For the basics of how I work with families and small teams, see the services section on my site.
FAQ
When does Marketplace Open Enrollment start?
It starts November 1 each year. That is the first day listed for enrolling in, renewing, or changing a Marketplace plan for the coming coverage year.
When does Open Enrollment end?
It ends January 15. After that date, HealthCare.gov says you enroll or change Marketplace plans only through a Special Enrollment Period when one applies.
What if I miss the December 15 deadline?
You can still enroll through January 15 according to HealthCare.gov. Coverage for those later enrollments can start February 1 once you pick a plan and pay any required first premium.
Can self-employed people use the Marketplace?
HealthCare.gov says freelancers, consultants, independent contractors, and other self-employed workers with no employees can shop the individual Marketplace. If you have employees, their small-business pages cover a different path.
What if I lose job coverage outside Open Enrollment?
HealthCare.gov lists losing other health coverage as a life event that may open a Special Enrollment Period. Confirm the details for your situation on HealthCare.gov or with a licensed agent. I do not make eligibility decisions.