Will 2026 ACA subsidy limits change after the 2025 American Rescue Plan extensions expire?

Checked on December 17, 2025
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Executive summary

If Congress takes no further action, the enhanced ACA premium tax credits enacted under the American Rescue Plan and extended by the Inflation Reduction Act will expire Dec. 31, 2025, and 2026 subsidy rules will revert to the pre‑ARP framework — reinstating a 400% FPL income cap and less generous “applicable percentages” that raise enrollees’ required contribution (for example, required contributions would move toward 2%–9.96% bands described for 2026) [1] [2]. Analysts and policy shops project large premium increases, enrollment declines and a renewed “subsidy cliff” unless Congress extends or alters the policy [3] [4] [5].

1. What the law would do next: a reversion to the pre‑ARP subsidy formula

Available sources make a single central point: absent new legislation, 2026 rules revert to the ACA’s original subsidy formula — eligibility generally limited to households between 100% and 400% of the federal poverty level and smaller subsidies based on statutory “applicable percentages” that rise with income [2] [1]. That reversion means households above 400% FPL who were receiving aid under ARP/IRA protections could lose eligibility entirely [2] [3].

2. How the numbers change: contribution caps and costs for consumers

Analysts quantify the change. Under the enhanced credits Congress enacted previously, some enrollees paid far less than under the original law; the 2026 reversion would limit subsidies so required contributions again rise to the pre‑enhancement bands — examples cited include contribution percentages that translate into benchmark premiums capped at roughly 2% of income at the low end up to about 9.96% for higher middle incomes under the non‑enhanced 2026 formula described by CRFB [1]. KFF and other groups estimate average marketplace premium payments would more than double for many subsidized enrollees if enhancements expire, and note average annual premium payments were $888 under enhanced credits in recent years [6] [4].

3. The cliff and enrollment impacts: millions at risk

Multiple policy shops warn of a “subsidy cliff” and substantial coverage losses. If the enhancements expire, households just above the 400% FPL threshold stand to lose subsidies abruptly; CBO, KFF and others project marketplace enrollment to fall and millions to face steep premium increases — estimates include up to several million losing coverage and large average dollar increases in annual premiums [3] [7] [5].

4. Insurers and premiums: how markets react ahead of policy certainty

Insurers filed rates anticipating less generous subsidies and potential enrollment shifts; filings and trackers show insurers proposed larger rate increases for 2026 in part to offset the expected exit of healthier enrollees and higher post‑subsidy premiums [8]. KFF and the Peterson‑KFF tracker indicate uncertainty itself drives higher requested rate increases, creating a feedback loop if Congress doesn’t act [8] [6].

5. Political options and tradeoffs: extensions, offsets, and reform proposals

Policymakers have proposed multiple paths: full extension, targeted extensions with income cutoffs or program‑integrity offsets, or letting the expiration stand. Full extension carries a substantial budget score (CRFB cites large multi‑year costs), and several proposals tie extensions to offsets or reforms such as tighter eligibility checks or temporary rather than permanent extensions [9] [10]. Legislative efforts in late 2025 included partisan votes and failed measures, underscoring political friction over cost, coverage and related policy riders [11].

6. Practical consequences for consumers in 2026 open enrollment

If enhancements expire, many shopping the marketplace will encounter higher displayed premiums and could decline coverage; CBPP and KFF note how early‑season price signals influence enrollment decisions and that delayed legislative action can leave consumers exposed during open enrollment windows [12] [13]. Separate changes in 2025 reconciliation law also affect repayment caps and immigrant eligibility rules beginning in 2026 — meaning some households could face larger tax‑time reconciliations and new coverage gaps independent of subsidy amounts [13].

7. What reporting does and does not say

Reporting consistently states that, under current law without new congressional action, subsidy generosity will decrease and the 400% FPL limit will return; the sources do not assert last‑minute administrative workarounds that would preserve 2025 subsidy levels without legislation [2] [5]. Available sources do not mention any enacted, legally binding extension for 2026 that would maintain the enhanced rules beyond Dec. 31, 2025 [14] [15].

Bottom line: unless Congress enacts an extension or a replacement, 2026 ACA subsidy limits will change materially — returning to pre‑ARP eligibility and smaller subsidies, producing higher required contributions for many enrollees, a revived subsidy cliff above 400% FPL, and likely enrollment and premium effects reflected in insurer rate filings and public‑policy analyses [2] [6] [8].

Want to dive deeper?
What happens to premium tax credits after the 2025 American Rescue Plan extensions end?
Will low- and middle-income households face higher ACA premiums in 2026 without ARPA extensions?
Are there legislative proposals in 2025–2026 to make ARPA ACA subsidies permanent?
How would state-based marketplaces and Medicaid expansion affect subsidy impacts in 2026?
Could interim IRS or HHS guidance soften subsidy cliffs when ARPA extensions expire?