Enrollment in Affordable Care Act marketplace plans has fallen by roughly 5 million people compared to last year's record high, according to federal data released in late June 2026. About 19.2 million people remain enrolled through Healthcare.gov and state marketplaces combined.
The drop has two parts: more than 1 million fewer people selected a plan during this year's open enrollment, and roughly 4 million more people who did enroll later dropped coverage or stopped paying premiums. The trigger, according to health policy researchers, was the expiration of enhanced premium tax credits that had kept marketplace premiums artificially low since 2021. When Congress failed to extend the credits, premiums roughly doubled for many enrollees between 2025 and 2026.
Health policy analysts are split on how much of the drop reflects genuine affordability problems versus administrative cleanup of fraudulent or duplicate enrollments, which the current administration has cited as a factor. Researchers who study the marketplace note that more than half of ACA enrollees live in Republican-held congressional districts, and that the people dropping coverage tend to skew healthier — a pattern that, if it continues, could push average premiums even higher for those who remain.
For anyone currently uninsured or on the fence about marketplace coverage, the math is straightforward but painful: going without health insurance shifts catastrophic medical risk entirely onto your own savings. It's the single highest-priority coverage gap in almost every scenario our Insurance Coverage Blueprint checks.