Roughly 22 million Americans enrolled in Affordable Care Act marketplace plans face premium increases of 100 percent or more starting in 2026 if Congress does not extend the enhanced premium tax credits first enacted during the pandemic. The steepest cost increases will fall on enrollees in their late 50s and early 60s, a group already paying the highest age-rated premiums before subsidies are applied. Federal modeling projects that 4.8 million people will lose coverage entirely, with the fallout concentrated in states that never expanded Medicaid.
Why expiring ACA subsidies threaten near-retirees most
Under the ACA’s age-rating rules, insurers can charge a 64-year-old up to three times what they charge a 21-year-old for the same plan. Enhanced premium tax credits, which Congress first boosted in 2021 and extended twice, have absorbed much of that cost difference by capping what any enrollee pays as a share of household income. When those credits revert to their original, narrower formula, older enrollees lose the largest dollar amount of subsidy because their base premiums are the highest. A 60-year-old earning $60,000 could see net monthly costs jump from a few hundred dollars to well over $1,000, depending on the benchmark plan in their county.
The Congressional Budget Office has scored the coverage and budget effects of letting the enhanced credits expire, projecting a sharp rise in the number of uninsured Americans in 2026 and beyond. The CBO analysis of selected health coverage policies forms the baseline that other analysts and lawmakers rely on when debating extension legislation. Those projections show that the premium shock is not evenly distributed: it hits hardest in rating areas where benchmark silver plans are expensive and where state policy offers no fallback coverage.
For people in their late 50s and early 60s, the timing could be especially destabilizing. Many in this group are not yet eligible for Medicare but already face higher medical needs, chronic conditions, and employment disruptions. Some work in jobs without employer-sponsored insurance; others are self-employed or recently retired. Without robust subsidies, marketplace coverage for them can quickly become unaffordable, forcing a choice between going uninsured or draining savings intended for retirement.
Coverage losses will cluster in non-expansion states
The Urban Institute estimates that 4.8 million enrollees will lose coverage in 2026 if the enhanced credits expire. That modeling breaks the losses down by income level and state policy context, and the results point to a clear pattern: states that did not expand Medicaid under the ACA stand to see the largest spikes in their uninsured populations. In those states, low-income adults who lose marketplace subsidies have no Medicaid safety net to catch them, and older adults in the 55-to-64 age band face unsubsidized premiums that can consume a third or more of their pre-tax income.
A testable version of this pattern would compare 2025 effectuated enrollment files, which track how many people actually paid premiums and maintained coverage, against 2027 administrative data once the subsidy change takes full effect. States with above-average shares of marketplace enrollees aged 55 to 64 and no Medicaid expansion should record the sharpest drops. Texas, Florida, Georgia, and several smaller Southern states fit that profile, and their combined marketplace enrollment accounts for a large share of the national total.
CMS reported that 23.0 million people signed up during the marketplace 2026 open enrollment period, a figure that reflects the enrollment boost driven by the enhanced credits. If those credits disappear, the gap between sign-ups and effectuated enrollment will widen dramatically as enrollees who select plans in the fall confront sharply higher bills in January and simply fail to pay. Insurers and regulators would likely see a surge in early-year terminations, with the steepest attrition among older adults who no longer qualify for generous subsidies.
Near-retirees will seek imperfect alternatives
As marketplace coverage becomes less affordable, many near-retirees will look for other options. Some may delay retirement to keep employer-sponsored insurance, while others may try to bridge the gap to age 65 with short-term plans that offer limited benefits and leave major gaps in protection. Still others will attempt to manage chronic conditions without consistent coverage, increasing the risk of medical debt and avoidable hospitalizations.
Once they reach 65, these same individuals can transition into Medicare, where standardized benefits and income-based assistance offer more predictable costs. Federal resources such as the official Medicare website provide information on enrollment, plan choices, and financial help. But the years immediately before Medicare eligibility remain a vulnerable period. A lapse in coverage at 60 or 62 can mean skipped cancer screenings, unmanaged diabetes, or untreated heart disease that carries consequences well into older age.
Policymakers weighing whether to extend the enhanced premium tax credits thus face more than an abstract budget question. The decision will determine whether millions of Americans in their final working years can maintain stable health coverage, especially in states that have chosen not to expand Medicaid. If Congress allows the credits to expire, the resulting premium spikes will test the resilience of the ACA marketplaces and the finances of near-retirees who are least able to absorb a sudden doubling of their monthly insurance bill.
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