ACA open enrollment for 2027 coverage starts November 1, 2026, and this year the math matters more than usual. The enhanced premium tax credits that kept many marketplace premiums low expired at the end of 2025, so the old income “cliff” is back. If you buy your own health insurance, a few hours of planning now can be worth hundreds or even thousands of dollars next year.
This ACA open enrollment guide skips the generic “just shop around” advice. Instead, it walks through the dates, the subsidy cliff, a real-number example, and a clear test for who should change plans and who can safely stay put.
ACA Open Enrollment 2027 Dates You Can’t Miss
On HealthCare.gov, the window runs from November 1, 2026 to January 15, 2027. If you want coverage that starts January 1, pick a plan by December 15. Enroll between December 16 and January 15, and your coverage starts February 1.
State-run exchanges set their own schedules. Several, including California, New Jersey, New York and DC, run through January 31, while Idaho ends early on December 15. Check your state exchange directly, because a few deadlines have shifted this year.
| Date | What happens (HealthCare.gov states) |
|---|---|
| Nov 1, 2026 | Open enrollment opens for 2027 plans |
| Dec 15, 2026 | Last day to choose a plan for Jan 1 coverage |
| Jan 15, 2027 | Open enrollment ends |
| Feb 1, 2027 | Coverage starts for Dec 16 – Jan 15 sign-ups |
You can confirm the federal dates on the official HealthCare.gov dates and deadlines page.
What Changed for 2027: The Subsidy Cliff Is Back
From 2021 through 2025, there was no hard income cap on premium tax credits. Congress did not extend those enhancements into 2026, so eligibility once again stops at 400% of the federal poverty level (FPL).
For 2027 coverage, marketplaces use the 2026 poverty guidelines: $15,960 for one person and $21,640 for a two-person household in the 48 contiguous states. Multiply by four and the cliff lands at about $63,840 for a single person and $86,560 for a couple. Alaska and Hawaii use higher figures.
KFF found that average net premium payments jumped 58%, from $113 to $178 a month, in 2026 after the enhancements expired. Insurers proposed a median increase of roughly 15% for 2027, and carriers are leaving the marketplace in more than 20 states. Rising premiums alone are a reason to take ACA open enrollment seriously this year.
A Real-Number Example: How a Few Thousand Dollars Can Save Your Subsidy
Meet Jordan, a 40-year-old freelance designer in a HealthCare.gov state. Jordan expects about $65,000 of income in 2027, roughly 407% FPL. At that level, Jordan gets zero premium tax credit and pays full price.
Say the full-price silver premium in Jordan’s area is $620 a month, or $7,440 a year (a hypothetical number; your quote will differ). Now suppose Jordan puts $2,000 into a traditional solo 401(k) and $1,500 into an HSA paired with a bronze plan. Those pre-tax contributions lower MAGI to about $61,500, under the $63,840 line.
Back under the cliff, Jordan qualifies for a premium tax credit again. Depending on age, ZIP code and the benchmark plan price, that credit can be worth thousands of dollars a year. Jordan also keeps the $3,500 as retirement and health savings, which makes this one of the most valuable ACA open enrollment moves for self-employed people near the line.
One catch: your subsidy is based on the income you estimate on your application, then reconciled on your tax return. If your actual income lands above 400% FPL, you may have to pay back the advance credit. Estimate carefully, and report income changes to the marketplace during the year.
Who Should Shop During ACA Open Enrollment, and Who Can Skip It
Auto re-enrollment is convenient, but it’s risky this year. Hundreds of thousands of enrollees have plans ending because their insurer is exiting, and the marketplace may move them into a plan they never compared.
Who this is for (shop actively):
- Your income is within about $5,000 of the 400% FPL cliff, above or below it
- Your insurer is leaving your state or your plan is being discontinued
- You take regular prescriptions or see specific doctors, so the 2027 network and drug list matter
- You’re self-employed or a gig worker, or you expect a raise, job change or move in 2027
- Your income is under 250% FPL, where silver plans with cost-sharing reductions can cut deductibles sharply
Who should skip it (or spend 15 minutes, not 3 hours):
- You’ll have affordable job-based coverage starting January 1
- You’ll turn 65 and move to Medicare during 2027
- You’re on Medicaid and your income hasn’t changed
- You already compared 2027 plans, and your current plan still wins on premium, network and drugs
5 Smart Moves Before December 15
- Update your income estimate. Use your best 2027 projection, not this year’s number.
- Compare total cost, not just the premium. Add the premium to your likely deductible and copays. The 2027 out-of-pocket maximum for marketplace plans is $12,000 for an individual, up from $10,600 in 2026.
- Look at a bronze plan with an HSA. Marketplace bronze and catastrophic plans remain HSA-eligible in 2027. You can contribute up to $4,500 for self-only coverage or $9,000 for family coverage; see our guide to HSA contribution limits for 2027.
- Check your doctors and prescriptions. Use each plan’s provider directory and formulary, then call the office to confirm.
- Don’t rely on auto-renewal. Before ACA open enrollment closes for January coverage, actively choose a plan so you start the year with coverage you picked.
Is there still a federal penalty for going uninsured? No, the federal fee ended after 2018. However, California, Massachusetts, New Jersey, Rhode Island and DC have their own coverage mandates, so check your state’s rules.
FAQ
When does ACA open enrollment end for 2027 coverage?
On HealthCare.gov, ACA open enrollment ends January 15, 2027. Choose a plan by December 15, 2026 if you want coverage to begin January 1. Some state exchanges run later, often through January 31.
Can I get a subsidy if I earn more than 400% of the poverty level?
Not for 2027 under current law. If your household income is above 400% FPL (about $63,840 for a single person), you won’t qualify for a premium tax credit. Lowering your MAGI with pre-tax retirement or HSA contributions may bring you back under the line.
What happens if I miss the deadline?
You’ll generally need a qualifying life event, such as losing job-based coverage, moving, getting married or having a baby, to use a Special Enrollment Period. Otherwise, you’ll wait until the next open enrollment window.
This article is for general educational purposes only and isn’t tax, legal or insurance advice. Dates, premiums and subsidy rules vary by state and can change; confirm details on HealthCare.gov or your state exchange before you enroll. Information current as of October 2026.