What changed for ACA coverage in 2026

Smaller subsidies, and the cliff returns

The headline change is the one that touches the most people. The enhanced premium tax credits that made coverage cheaper from 2021 through 2025 expired on January 1, 2026, and the credit reverted to its pre-2021 form. That brought back the 400%-of-poverty subsidy cliff — above that income line, there’s no premium tax credit at all — and it raised the share of income that everyone else is expected to pay. By analysts’ estimates, premium payments for subsidized enrollees roughly doubled on average. Our subsidies guide covers who still qualifies.

No more cap on paying credits back

The subsidy you take during the year is an advance based on your estimated income, and it gets reconciled at tax time. Through 2025, if your income stayed under 400% of poverty, the amount you might have to repay was capped. Starting with the 2026 tax year, that cap is gone — so if you underestimate your income and receive too much credit, you can owe the full difference back. The practical effect is that estimating your income carefully, and updating it mid-year if it changes, matters more than it used to.

A shorter Open Enrollment

The annual sign-up window narrowed. In most states, Open Enrollment now runs from November 1 to December 15 — shorter than the previous mid-January deadline — and every plan selected during the window takes effect January 1, with no later start date. Some state-run exchanges set their own dates, a few opening in mid-October and others extending the deadline toward the end of December, so it’s worth confirming your state’s schedule rather than assuming.

Tighter eligibility and renewal

Several rule changes tightened the edges of the program. Income and eligibility verification got stricter, the year-round special enrollment period that let the lowest-income applicants sign up any time was paused, and people with Deferred Action for Childhood Arrivals status are no longer eligible for Marketplace coverage. Auto-renewal changed too: if you’re automatically re-enrolled in a plan with a $0 premium and don’t confirm your information, a small monthly charge now applies until you do — one more reason to log in and actively renew each fall.

One bright spot: HSAs

Not every change made coverage costlier. As of 2026, Bronze and Catastrophic Marketplace plans count as HSA-eligible high-deductible plans, which means you can pair their low premiums with a tax-advantaged Health Savings Account — contributing pre-tax dollars, letting them grow, and spending them on qualified medical costs. For a healthy shopper who wanted a low premium anyway, that’s a genuine new benefit.

What to do about it

None of this requires panic, but it does reward attention. Don’t let your plan auto-renew without reviewing it — prices and the benchmark that sets your subsidy shifted. Estimate your income carefully for the year, and if you’re near the 400% line, look at whether modest moves could keep you under it. Check whether you still qualify for help at all, since the cliff may have changed your answer. And compare plans on total cost, because a Bronze plan — now HSA-eligible — may make more sense than it did before. Congress could still restore some version of the enhanced credits, so watch for updates, but plan around today’s rules.