ACA Open Enrollment Guide: What You Need to Know
ACA Open Enrollment runs November 1 through January 15. Premium tax credits cap the benchmark Silver plan at 8.5% of household income for those earning 100-400%+ of the Federal Poverty Level, and about 85% of enrollees receive subsidies. Outside this window, you need a qualifying life event.
What Is Open Enrollment?
Open Enrollment is the annual period (November 1 through January 15 in most states) when you can sign up for health insurance through the ACA Marketplace. Outside of this window, you can only enroll or change plans if you qualify for a Special Enrollment Period due to a life event like marriage, having a baby, losing other coverage, or moving to a new area.
Who Qualifies for Subsidies?
Premium tax credits are available to individuals and families with household incomes between 100% and 400%+ of the Federal Poverty Level. In 2026, the enhanced subsidies cap premiums at 0-8.5% of income, meaning no one pays more than 8.5% of their household income for the benchmark Silver plan. About 85% of Marketplace enrollees receive subsidies, making coverage significantly more affordable than the sticker price.
Choosing the Right Metal Tier
Marketplace plans come in four metal tiers: Bronze (lowest premium, highest deductible — good for healthy people), Silver (moderate premium, moderate deductible — the most popular choice, and the only tier where cost-sharing reductions apply), Gold (higher premium, lower out-of-pocket — good if you use healthcare frequently), and Platinum (highest premium, lowest out-of-pocket). Most people choose Silver or Bronze plans.
Special Enrollment Periods
You can enroll outside Open Enrollment if you have a qualifying life event: losing health coverage, getting married or divorced, having or adopting a child, moving to a new ZIP code, or experiencing changes in income that affect subsidy eligibility. You typically have 60 days from the event to enroll. Documentation may be required to verify your eligibility for a Special Enrollment Period.
Avoiding Common Mistakes
Don't just pick the plan with the lowest premium — estimate your total costs including deductibles, copays, and prescription coverage. Check that your doctors and preferred hospitals are in-network. If you take regular medications, look up the plan's drug formulary to avoid surprises. And don't forget to update your income estimate each year — underestimating can lead to repaying subsidies at tax time.
Frequently Asked Questions
When is ACA Open Enrollment in 2026?
Open Enrollment runs from November 1 through January 15 in most states. For coverage starting January 1, you generally need to enroll by December 15. A few states with their own marketplaces (like California, Massachusetts, and New York) have slightly different deadlines. After the window closes, you need a qualifying life event to enroll.
Who qualifies for ACA subsidies in 2026?
Premium tax credits are available to households earning between 100% and 400%+ of the Federal Poverty Level. The enhanced subsidies (extended through 2026) cap the benchmark Silver plan premium at 0-8.5% of household income, so most people pay far less than the sticker price. About 85% of Marketplace enrollees currently receive subsidies.
What is the best ACA plan tier to choose?
It depends on your health needs. Bronze plans have the lowest premiums but highest deductibles — best if you rarely need care. Silver plans balance cost and coverage, and are the only tier where cost-sharing reductions apply for lower-income households. Gold and Platinum plans have higher premiums but lower out-of-pocket costs — better if you use healthcare frequently.
Can I enroll outside Open Enrollment?
Yes, if you have a qualifying life event: losing other coverage, getting married or divorced, having or adopting a child, moving to a new ZIP code, or income changes affecting subsidy eligibility. You typically have 60 days from the event to enroll, and you may need to provide documentation. Outside these windows, enrollment isn't allowed.