An Urban Institute brief estimates that if the premium subsidy increases for the ACA marketplace enacted through 2022 in the American Rescue Plan are made permanent, marketplace enrollment will increase by 5.1 million, and the uninsured population will decrease by 4.2 million.
That's somewhat higher than the increase of 3 million that KFF's Cynthia Cox floated to me as a soft estimate. A lot depends on the effectiveness of outreach and possible future improvements to the enrollment process, Cox stressed. Both estimates are pretty modest, given the magnitude of the subsidy boost, outlined below. By KFF's estimate, about 10.6 million uninsured are eligible for subsidies under the new schedule.
Here I want to focus on the category* in which Urban foresees minimal change: enrollment at 100-138% FPL in states that have refused the ACA Medicaid expansion. In those states, eligibility for marketplace subsidies begins at 100% FPL, whereas in expansion states, adults** with incomes up to 138% FPL are eligible for Medicaid. Under ARPA, benchmark silver coverage is free at this income level, and in fact up to 150% FPL. And up to that threshold, Cost Sharing Reduction boosts the actuarial value of the free silver plan to 94%, well above the average for employer-sponsored coverage. According to CMS, the average deductible for silver plans at this income level is just $69 in HealthCare.gov states (e.g., all nonexpansion states). While even modest out-of-pocket costs appear to be a barrier at near-poor incomes -- Medicaid logs higher satisfaction ratings than high-CSR marketplace coverage in surveys -- this is a very valuable free benefit.
The Urban Institute analysis estimates that ARPA will reduce the uninsured population at incomes below 138% FPL by only 312,000. The authors do not provide an estimate of the subsidy-eligible population at 100-138% FPL -- but as I noted in early April, the Kaiser Family Foundation does provide such estimates for 12 nonexpansion states.*** In those 12 states together, 1.8 million people with incomes in the 100-138% FPL range were uninsured in 2019, according to KFF's estimate.
