ACA Enrollment Down 3 Million After Enhanced Subsidies Expired, State-Level Data Shows Ohio and Oklahoma Hit Hardest

Since the enhanced ACA premium tax credits expired on January 1, 2026, the coverage loss picture has sharpened considerably, and the full state-by-state damage is now visible.

The U.S. Department of Health and Human Services posted the complete 50-state enrollment breakdown in late June. The key number: 22.1 million people held ACA marketplace plans in 2025. By February 2026, that count had fallen to 19.2 million, a loss of roughly 3 million covered Americans, according to KFF analyst Cynthia Cox, who reviewed the dataset.

Earlier reports had focused on open-enrollment sign-ups, which showed about a 1 million, or 5%, decline. Numbers the Commonwealth Fund published in a June 8 report understated the actual coverage loss because they counted people who selected plans but never paid their first premium. The HHS effectuated enrollment data, measured on April 15 after the nonpayment grace period closed for most enrollees, captures who actually had active coverage.

Who Got Hit Hardest

Ohio and Oklahoma each lost more than 32% of their ACA enrollees, the largest drops of any state, according to an AP analysis of the HHS data. Arizona, South Carolina, Minnesota, Indiana, Michigan, Mississippi, Louisiana, and Missouri each lost more than a quarter of their covered populations. In total, enrollment fell in 41 states during the 2026 sign-up period, according to Centers for Medicare and Medicaid Services data cited by Newsweek.

Not every state went backward. New Mexico posted the largest gain, with enrollment rising 18%.

Why Premiums Jumped

The enhanced tax credits had capped premium payments at 8.5% of income for enrollees above four times the federal poverty level and reduced costs sharply for lower earners. Without them, the average enrollee faced a 114% increase in monthly premium payments to keep the same plan, according to KFF. Average deductibles rose 37%. Many enrollees downgraded to bronze plans to stay on the marketplace at all.

The Peterson Center on Healthcare and KFF had projected average premium increases of 75% following subsidy expiration. The Congressional Budget Office previously forecast marketplace enrollment could shrink by roughly 25% in this scenario. The actual 13% decline in effectuated enrollment landed below that ceiling, but the losses are not evenly distributed, and analysts warn they may not be finished.

A KFF survey conducted in late February and early March found that 9% of 2025 marketplace enrollees had already become uninsured. Another 17% said they were not confident they could afford coverage for the full year.

The people just above the former subsidy eligibility threshold—roughly 400% of the federal poverty level—felt this disproportionately. That group represents only 3% of marketplace enrollees but accounted for 27% of the overall enrollment decline, according to KFF.

The Administration's Counterargument

HHS, in its own report, attributed a significant share of the enrollment drop to a federal crackdown on fraudulent or "phantom" enrollments. Cases where people were signed up for plans without their knowledge, sometimes by third-party brokers gaming the subsidy system. That fraud problem was real and documented under the Biden administration. If large numbers of those phantom enrollments have been purged, the raw enrollment decline overstates the coverage loss for real people.

Cox acknowledged that dynamic but said the timing and scale of the drop align with what analysts expected from premium increases alone. The KFF survey data showing actual people reporting uninsurance and premium strain is harder to attribute to fraud cleanup than a paperwork purge.

What People Who Relied on the ACA Actually Look Like

The people most exposed to this shift are not a narrow demographic. According to Newsweek, the subsidy-eligible population included students, workers at small businesses, the self-employed, and early retirees who are too young for Medicare. These are people without employer-sponsored coverage who used the ACA marketplace because no other affordable option existed.

For that group, Cynthia Cox put it directly: "The ACA Marketplaces are often an option of last resort for people who do not have an affordable offer of coverage through their work and are ineligible for Medicare or Medicaid."

The Political Arithmetic

The enhanced subsidies expired because Congress did not renew them. Democrats pushed for renewal last fall; so did some Republicans. The subsidies lapsed anyway. The Trump administration's HHS framing—that this was mostly about fraud—conflicts with what the state-by-state loss patterns show. States that had among the highest rates of subsidy-dependent enrollees saw the sharpest declines.

The unresolved question, as Cox and KFF noted, is how many of the 3 million people who dropped off the ACA rolls are now fully uninsured versus having found coverage elsewhere. Until that data emerges, the full downstream impact on hospital systems, personal finances, and public health remains an open estimate rather than a closed number.