2027 Open Enrollment: Dates, Deadlines & How to Prepare

After the 2026 premium increases, the worst thing you can do is auto-renew without looking. Getting ready early for 2027 Open Enrollment is the simplest way to avoid overpaying. Here are the expected dates, key deadlines, and a prep checklist to make enrollment painless.

2027 health insurance open enrollment calendar and deadlines

By Health Insurance Network Team

Quick Answer: 2027 Open Enrollment

In most states, 2027 Open Enrollment is expected to run November 1, 2026 – January 15, 2027. Enroll by about December 15, 2026 for coverage starting January 1, 2027; enroll after that (through mid-January) and coverage usually starts February 1. Some state exchanges have longer windows. Miss the window and you'll generally need a Special Enrollment Period. Confirm your state's final dates, and don't auto-renew without re-checking your subsidy and comparing plans.

Key Dates to Know

Milestone	Expected date
Open Enrollment begins	November 1, 2026
Deadline for Jan 1 start	~December 15, 2026
Open Enrollment ends	~January 15, 2027
State exchanges	May run longer — check your state

Dates are based on recent years and may shift; verify the finalized 2027 schedule for your state.

Your 2027 Prep Checklist

Estimate your 2027 household income (for your subsidy).
Gather SSNs/document numbers for everyone applying.
List your doctors and prescriptions to check networks and formularies.
Review this year's plan — premium, deductible, and what changed.
Note any employer coverage offers (they affect subsidy eligibility).

Smart Moves for 2027

Re-check your subsidy. Don't assume last year's amount carries over.
Compare every carrier. The 2026 repricing changed which plans are cheapest.
Enroll early. Beat the December rush and lock in a January 1 start.
Match the plan to your care. Confirm your doctors and drugs are covered.

Don't wait until January

Enrolling early avoids website slowdowns and long call waits, and it secures a January 1 start so you're not left with a coverage gap.

Frequently Asked Questions

When is Open Enrollment for 2027 health insurance?

For most states using HealthCare.gov, Open Enrollment for the next plan year typically runs from November 1 to January 15, with coverage starting January 1 if you enroll by mid-December. Several state-run exchanges set their own (often longer) windows. Confirm your state's exact 2027 dates as they're finalized.

What's the deadline to have coverage start January 1, 2027?

In most HealthCare.gov states, you generally need to enroll by around December 15, 2026 for a January 1, 2027 start. Enroll between then and the mid-January deadline and coverage usually starts February 1. State exchanges may differ.

What happens if I miss the 2027 Open Enrollment deadline?

You generally can't enroll in a Marketplace plan until the next Open Enrollment unless you qualify for a Special Enrollment Period after a life event such as losing coverage, moving, marriage, or having a baby. Medicaid and CHIP enrollment stay open year-round.

Why does preparing early matter this year?

After the 2026 premium increases and subsidy changes, auto-renewing into last year's plan can be costly. Preparing early lets you re-check your subsidy, compare every carrier, and avoid the December rush when call wait times and website traffic peak.

What documents do I need to enroll?

Have your household income estimate for 2027, Social Security numbers or document numbers for applicants, current plan details, a list of your doctors and medications, and information about any employer coverage offers. This lets you complete the application and accurately calculate your subsidy.

Should I just auto-renew my current plan?

Usually not without checking. Plans, prices, and your subsidy can change year to year, and the 2026 repricing reshuffled which plans are cheapest. Re-shopping each Open Enrollment is one of the most reliable ways to save.

Can I change plans after Open Enrollment ends?

Only with a qualifying life event that triggers a Special Enrollment Period. Otherwise you're locked into your plan choice until the next Open Enrollment, so it's worth getting the decision right.

Will I still get a subsidy for 2027?

Premium tax credits still exist, though the enhanced amounts were scaled back for 2026. Eligibility depends on your income and household size. Check each year, because both your situation and the rules can change.