ACA Open Enrollment for 2026 coverage runs from November 1, 2025 through January 15, 2026. This is your annual window to enroll in, switch, or update your health insurance marketplace plan. In 2025, over 21.3 million Americans enrolled through HealthCare.gov, a record high (CMS.gov). If you miss Open Enrollment and don't qualify for a Special Enrollment Period, you'll have to wait until the next year to get coverage.
What Are the Key Open Enrollment Dates for 2026?
| Date | What Happens |
|---|---|
| November 1, 2025 | Open Enrollment begins, you can enroll, switch, or renew plans |
| December 15, 2025 | Deadline for coverage starting January 1, 2026 |
| January 15, 2026 | Final deadline, coverage starts February 1, 2026 |
Important: Some states with their own marketplaces (California, New York, etc.) may have different deadlines. Check your state marketplace for exact dates.
What Can You Do During Open Enrollment?
- Enroll for the first time if you're currently uninsured
- Switch plans or carriers, even if you're happy with your current plan, premiums and networks change annually
- Change metal levels, move from Bronze to Silver, Gold to Bronze, etc.
- Update your income and household size to adjust your premium tax credits
- Add or remove dependents from your plan
What's New for the 2026 ACA Marketplace?
- Enhanced subsidies continue: The Inflation Reduction Act extended enhanced premium tax credits, keeping the 8.5% income cap on premium contributions
- Record enrollment: Following 21.3 million enrollees in 2025, insurers are offering more plan options in many markets
- Premium changes: Average premiums are shifting, some areas see decreases while others see 5 to 10% increases. Shopping is more important than ever
- New insurers: Several markets are gaining new carriers, increasing competition and potentially lowering prices
What Is a Special Enrollment Period (SEP)?
Outside Open Enrollment, you can only enroll if you experience a qualifying life event (QLE) that triggers a 60-day Special Enrollment Period:
- Losing health coverage, job loss, COBRA expiring, aging off a parent's plan. See our guide to losing employer coverage
- Getting married or divorced
- Having or adopting a child
- Moving to a new state or county (with different plan options)
- Losing Medicaid eligibility
- Turning 26 and aging off a parent's plan
You must provide documentation of the qualifying event. Don't wait, the 60-day clock starts from the event date, not when you realize you need coverage.
What Are the Biggest Open Enrollment Mistakes?
- Auto-renewing without shopping: Plans change every year. Your 2025 plan may cost more or cover less in 2026. According to KFF, active shoppers save an average of $300 to $600/year compared to auto-renewers
- Comparing only premiums: A $50/month premium with a $9,000 deductible costs more than a $200/month premium with a $2,000 deductible if you use any healthcare. Compare total annual costs
- Not checking your doctor's network: Carrier networks change annually. Confirm your doctors and hospitals are still in-network before enrolling
- Ignoring prescription formularies: Your medication may move to a higher tier or be dropped entirely. Check the plan's drug list
- Not updating your income: If your income changed, your subsidy amount changed too. Failing to update can result in owing money at tax time
- Waiting until the last day: Technical issues and long wait times are common on deadline day. Enroll early to avoid problems
How Should You Shop for an ACA Plan?
- Estimate your total annual cost: (12 × monthly premium) + likely out-of-pocket expenses based on your healthcare use
- Check your doctors and hospitals: Use the plan's provider directory to confirm in-network status
- Review the drug formulary: Search for your specific medications and check which tier they're on
- Consider your healthcare usage: Rarely see a doctor? Bronze may work. Regular prescriptions or planned procedures? Silver or Gold is likely cheaper overall
- Apply for subsidies: Even if you think you earn too much, check, the income cap is higher than most people realize
- Work with a licensed agent: Agents can compare all available plans, explain the fine print, and help you enroll, at no cost to you. Schedule a free consultation
Frequently Asked Questions About Open Enrollment
What happens if I miss Open Enrollment?
You cannot enroll in an ACA marketplace plan until the next Open Enrollment period unless you qualify for a Special Enrollment Period through a qualifying life event.
Do I have to re-enroll every year?
No, your plan will auto-renew. However, you should actively shop and compare because premiums, networks, and formularies change annually. Auto-renewers often overpay.
Can I change plans mid-year?
Only with a qualifying life event. Otherwise, you're locked into your plan until the next Open Enrollment.
Is there a penalty for being uninsured?
The federal individual mandate penalty was reduced to $0 in 2019. However, some states (California, Massachusetts, New Jersey, Rhode Island, DC) have their own penalties.