Significant Decrease in ACA Enrollment and Coverage Impacts

Recent state enrollment data from Arkansas, Colorado, Maryland, Massachusetts, New Mexico, and New York suggest potential decreases in coverage under the Affordable Care Act (ACA). This decline follows Congress's decision not to renew enhanced subsidies, which has significantly impacted the affordability of coverage. A Georgetown University analysis highlights that many individuals either opted out or did not pay premiums after initially enrolling for coverage in 2026.

Federal data has been limited to initial sign-ups during the open enrollment period, which includes automatic renewals. During the 2026 enrollment period, sign-ups decreased by 1.2 million, representing the largest 5 percent drop since the ACA marketplaces were launched in 2014.

Researchers Stacey Pogue and Sabrina Corlette emphasize that the raw data does not fully portray the situation. They stress the importance of examining whether individuals maintain their coverage post-enrollment, paying particular attention to premium payments.

Projections indicate marketplace enrollment could fall by about 5 million in 2026, with possible further declines in 2027 due to policy changes under the One Big Beautiful Bill Act and other regulatory compliance adjustments. The expiration of enhanced premium subsidies disproportionately affected middle-income consumers, while low-income enrollees remained shielded by state-funded subsidies.

According to state exchange data, plan cancellations increased by 24 percent compared to March 2025. Middle-income consumers, adversely impacted by the end of premium tax credits, led this trend. Maryland's coverage fell by 13 percent from January to April, while Arkansas experienced a 16 percent decrease, doubling its 2025 decline. Massachusetts and New Mexico also reported significant declines.

Pogue and Corlette noted, "While a drop-off in this period is not unexpected, the magnitude compared to last year is stark. This is a small sample, but these early indicators may not bode well for national outcomes."