Open enrollment for 2027 health coverage opened on November 1, 2026, and in most states you have until January 15, 2027 to pick a plan, with December 15, 2026 as the hard cutoff if you want coverage starting January 1. This year the stakes are higher than usual. The enhanced premium tax credits that kept Affordable Care Act plans cheap since 2021 expired at the end of 2025, and KFF estimates that a subsidized enrollee's average annual premium share jumped 114%, from $888 in 2025 to $1,904 in 2026. Federal enrollment data already shows roughly 1.4 to 2 million fewer people signed up compared with the same point last cycle, well below the 10-million-person drop some forecasters originally feared, but still a real shift in who can afford coverage.
None of that is useful to you unless you know what to actually do with it before your window closes. This guide walks through how to shop for a 2027 plan without wrecking your budget, how to legally lower the income number the marketplace uses to judge your subsidy, and what the equivalent moment looks like if you live in the UK, Canada, Australia, New Zealand, or Western Europe, where "open enrollment" in the American sense doesn't exist but your own annual coverage decisions still do.
What Actually Changed for 2027 Open Enrollment
From 2021 through 2025, pandemic-era law removed the income cap on who could get ACA subsidies and capped everyone's premium contribution at 8.5% of income regardless of how much they earned. That cap is gone now. The old rule is back: if your household income sits above 400% of the federal poverty line, you get zero premium tax credit, full stop, even if you're a single dollar over the line. KFF's own modeling shows what that does in practice — a person earning around $28,000 a year who previously paid roughly 1% of their income toward a benchmark silver plan is now looking at close to 6%, because the subsidy formula that cushioned lower earners also got stingier.
A three-year extension of the enhanced credits passed the House in January 2026, but it stalled in the Senate, and there's no guarantee it comes back before your 2027 plan takes effect. Budget as if the current rules hold, and treat any future legislative fix as a pleasant surprise rather than something to count on.
Who Feels This Most
Self-employed workers, early retirees not yet on Medicare, gig workers, and anyone whose income hovers near that 400%-of-poverty cutoff are the ones who'll notice the biggest swing. If your state runs its own exchange, check it directly — New Mexico and Vermont currently use state funds to backfill some of what the federal subsidies no longer cover, so your actual number may look better than the national averages above.
Key Numbers to Know for 2027 Open Enrollment
| Metric | 2025 Cycle | 2026-2027 Cycle | What It Means for You |
|---|---|---|---|
| Avg. subsidized enrollee's annual premium share | $888 | $1,904 | Budget for roughly double your old monthly premium if you still qualify for help |
| Subsidy eligibility cutoff | No income cap (2021-2025 rule) | 400% of federal poverty line restored | Earning even slightly above the line means no premium tax credit at all |
| Example: $28,000 earner's premium share | ~1% of income | ~6% of income | Lower earners near the line should re-check eligibility every year, not assume it stays the same |
| Marketplace sign-ups vs. last cycle | Record highs (~24M nationally) | Down ~1.4M-2M so far | Fewer people are getting help; shop early rather than assuming your old plan auto-renews at a fair price |
| Deadline for Jan. 1, 2027 coverage | — | December 15, 2026 (most states) | Enroll by this date or your coverage won't start until February 1 |
Step-by-Step: How to Shop for a 2027 Plan Without Blowing Your Budget
- Re-estimate your 2027 income first, not your plan. The subsidy calculation runs off projected modified adjusted gross income (MAGI), and getting that number right before you compare plans keeps you from picking something you can't actually afford or missing help you qualify for.
- Use the official marketplace calculator before you touch a private comparison site. Healthcare.gov (or your state exchange) runs the real subsidy math against your household size and income. Private brokers can be useful for comparing plan details afterward, but the subsidy number has to come from the source.
- Compare total annual cost, not just the monthly premium. A lower premium with a $9,200 out-of-pocket maximum can cost more over a bad year than a higher premium with a $4,500 maximum. Add premium plus a realistic estimate of deductible and copay use.
- Check whether your doctors and prescriptions are still in-network. Insurers reshuffle networks every year, and a plan that looked identical to last year's can quietly drop your specialist or your pharmacy's preferred tier.
- Enroll before December 15, 2026 if you want coverage on January 1. Waiting until the January 15 final deadline pushes your start date to February 1 in most states, leaving a gap you'd have to cover out of pocket.
How to Lower Your MAGI and Qualify for More Subsidy Help
Because the subsidy cliff is now a hard line again, small, legal reductions to your projected income can be the difference between getting meaningful help and getting none. Consider these before you lock in your 2027 estimate:
- Max out pre-tax 401(k) or traditional IRA contributions, which lower your MAGI dollar for dollar.
- Contribute to an HSA if you're on a high-deductible plan — HSA contributions reduce MAGI the same way retirement contributions do, and the money still belongs to you.
- If you're self-employed, make sure you're deducting the self-employed health insurance premium and claiming every legitimate business expense before you estimate next year's income.
- Time large one-off income events, like a Roth conversion or the sale of an asset, for a year when you don't need marketplace subsidies, if you have any control over the timing.
- Re-check your estimate mid-year once actual income comes in. If you underestimated and end up near the cliff, a late-year retirement contribution can still pull you back under the line before you file taxes.
Common Mistakes to Avoid During Open Enrollment
- Letting your plan auto-renew without checking the price. Auto-renewal protects your coverage from a gap, not your wallet — insurers routinely raise premiums on existing plans more than on new ones.
- Guessing at your income instead of calculating it. An overestimate costs you subsidy money all year; an underestimate means a surprise repayment at tax time.
- Ignoring the total out-of-pocket maximum. A cheap premium on a plan with a sky-high maximum is a bet, not a budget decision.
- Assuming last year's doctors are still covered. Confirm network status directly with the plan, not from memory.
- Waiting until the final week. Marketplace call centers and websites slow down as the December 15 deadline approaches; starting early gives you room to fix errors in your application.
If You Live Outside the US: What This Means for You
"Open enrollment" in this sense is a US-specific mechanism tied to how the Affordable Care Act structures subsidies and private marketplace plans — it doesn't have a direct equivalent in the UK, Canada, Australia, New Zealand, or most of Western Europe, where basic coverage is funded through general taxation or mandatory social insurance rather than an annual shopping period. In the UK, NHS coverage is automatic and doesn't require you to pick a plan each year; the decision you actually face is whether to add private supplementary insurance, which you can typically start or switch at any point in the year. Canada's provincial health plans work the same way — coverage for core medical care is automatic, though workplace extended health and dental benefits often do have their own enrollment windows worth checking around year-end. Australia and New Zealand both run universal public systems (Medicare and the public health system, respectively), with private health insurance as an optional add-on; in Australia specifically, the better-known annual pressure point is the Lifetime Health Cover loading tied to turning 31, not a November-January window.
Germany is the closest parallel worth knowing about: residents on the statutory health insurance system (GKV) can switch insurers once a year with two months' notice, and many time that switch to take effect January 1 — functionally similar timing to the US deadline above, even though the underlying system and subsidy mechanics are completely different. If you're outside the US, the actionable takeaway from this guide isn't "enroll in an ACA plan," it's "use this same calendar window to review whatever supplemental coverage, workplace benefits, or private top-up insurance you do have, since many employers and insurers worldwide cluster their own renewal periods around the same November-to-January stretch."
What to Do Next
If you're in the US and haven't touched your marketplace account yet, start this week. Pull your most recent pay stubs, estimate 2027 income as accurately as you can, and run the subsidy calculator before you compare a single plan. If you're near the 400%-of-poverty cliff, spend twenty minutes checking whether a retirement or HSA contribution moves you back under the line — it's one of the few places in personal finance where a routine savings decision also changes a bill you'll pay every month next year. And whichever country you're in, treat this season as your annual prompt to actually read your renewal notice instead of letting it auto-pilot into next year.