Significant Decline in ACA Enrollment Due to Expiration of Subsidies

According to a recent analysis by KFF, enrollment in the Affordable Care Act (ACA) health insurance marketplace is expected to decrease significantly this year, with an estimated reduction of nearly 5 million participants. This decline, over 20%, is primarily driven by the expiration of subsidies that previously helped many individuals afford their premiums. Consequently, enrollees are encountering heightened healthcare costs, with average deductibles rising by more than $1,000 and monthly premiums increasing by $65.

Cynthia Cox, a vice president at KFF and co-author of the report, noted that people are generally facing higher costs for their healthcare coverage. The potential reduction in ACA participation from 22.3 million in 2025 to approximately 17.5 million illustrates the program's evolving landscape. These changes particularly impact gig workers, farmers, and self-employed individuals who lack employer-provided insurance.

The analysis, utilizing data from federal and state sources as well as actuarial insights from Wakely Consulting Group, reveals that the end of subsidies has notably impacted middle-income Americans. This demographic earns too much to qualify for the existing subsidies aimed at low-income individuals but struggles to afford health coverage absent enhanced subsidies. KFF's findings also indicate a higher retention of enrollees in states with their own exchanges compared to those using the federal marketplace.

The Centers for Medicare and Medicaid Services, which manage ACA enrollments, has yet to release its final 2026 enrollment data and did not comment on KFF's report. Nevertheless, some explanations for the decreased enrollment include federal efforts to address program fraud. Despite these challenges, insurers are adapting to the marketplace changes, potentially stabilizing future cost increases. Cox expressed cautious optimism that this adjustment period might prevent another significant spike in premiums shortly.