Open Enrollment for 2027 Marketplace health insurance starts November 1. It is tempting to let an existing plan roll over, but a short review before enrollment opens can prevent an unpleasant surprise in January. Premiums, provider networks, prescriptions, household income, and plan availability can all change from one year to the next.
This 2027 Marketplace Open Enrollment checklist helps you prepare before you log in, compare plans on more than the monthly premium, and meet the deadlines that matter.
Know the 2027 enrollment deadlines
For Marketplace coverage, Open Enrollment generally runs from November 1 through January 15. To have coverage begin January 1, enroll in or change your plan by December 15 and pay the first premium by your insurer’s deadline. Applications completed from December 16 through January 15 can generally start coverage February 1.
Do not assume an automatic renewal is the best choice. If your current plan changes, disappears, or has a different network, reviewing your options during Open Enrollment is the time to act. Outside this window, you usually need a qualifying life event to make a change.
1. Update your household and expected income
Marketplace savings are based on the income and household you expect for the year you are applying for—not last year’s tax return alone. Before you compare plans, make a list of expected changes for 2027:
- A raise, job change, reduced hours, self-employment income, retirement, or unemployment
- A marriage, divorce, birth, adoption, or a dependent moving in or out
- Changes in who will file taxes or who you will claim as a dependent
- An offer of job-based coverage for you or another household member
Use your best good-faith estimate and keep supporting records. An inaccurate estimate can mean receiving too much advance premium tax credit and owing money back at tax time, or missing savings you could have received. If your income changes during the year, update your Marketplace application promptly.
2. Gather the information you will need
A little preparation makes enrollment much easier. Have names, birth dates, identification details where applicable, recent income information, employer coverage details, current plan information, and a list of doctors, hospitals, pharmacies, and prescriptions nearby.
3. Compare total annual cost, not just the premium
The lowest monthly premium is not always the lowest-cost choice. Review your premium after any savings, deductible, copays and coinsurance, out-of-pocket maximum, provider network, and prescription coverage. Estimate both a routine year and a year with a major medical need. This gives you a more realistic view than the premium alone.
For a deeper walkthrough, see our guide to choosing a Marketplace plan without overpaying.
4. Check for cost-sharing reductions
If your household qualifies for cost-sharing reductions, a Silver plan may offer lower deductibles, copays, and out-of-pocket costs than you would otherwise receive. Those extra savings apply only when you enroll in an eligible Silver plan, so compare full plan details before choosing based on premium alone.
5. Review your renewal notice—and then shop anyway
Read renewal information carefully, especially the premium, deductible, provider network, prescription coverage, and whether your plan remains available. Automatic re-enrollment can be convenient, but it does not replace a comparison of available 2027 plans.
If you have access to employer coverage, compare it against Marketplace coverage using total household cost and benefits—not assumptions. Our Marketplace vs. employer coverage comparison explains the factors to review.
6. Finish enrollment and pay the first premium
Submitting an application is only part of the process. Save your confirmation, watch for insurer communications, and pay the first premium directly to the insurance company by its deadline. Coverage does not begin until that payment requirement is met.
The bottom line
Update your information, check your doctors and prescriptions, compare total costs, and aim for the December 15 deadline if you want coverage to start January 1. For official enrollment dates, eligibility, and application guidance, visit HealthCare.gov.
This article is general educational information, not tax, legal, or insurance advice. Plan options, costs, and eligibility vary by state and household. Review your Marketplace application and plan documents carefully.
