By KATHERINE HEMPSTEAD PhD
The 2019 ACA plan year is notable for the increase in insurer participation in the marketplace. Expansion and entry have been substantial, and the percent of counties with one insurer has declined from more than 50 percent to approximately 35 percent. While urban areas in rural states have received much of the new participation, entire rural states have gained, along with more metropolitan urban areas.
Economic theory and common sense lead most to believe that increased competition is unquestionably good for consumers. Yet in the paradoxical world of the subsidized ACA marketplace, things are not so simple. In some markets, increased competition may result in a reduction in the purchasing power of subsidized consumers by narrowing the gap between the benchmark premium and plans that are cheaper than the benchmark. Even though the overall level of premiums may decline, potential losses to subsidized consumers in some markets will outweigh gains to the unsubsidized, suggesting that at the county level, the losers stand to lose more than the winners will win.
One way to illustrate this is to hypothetically subject 2018 marketplace enrollees to 2019 premiums in counties where new carriers have entered the market. Assuming that enrollees stay in the same metal plan in both 2018 and 2019, and that they continue to buy the cheapest plan in their metal, we can calculate how much their spending would change by income group.
Under these assumptions, in about one quarter of the counties with federally facilitated marketplaces (FFM) that received a new carrier in 2019, both subsidized and unsubsidized enrollees would be better off in 2019, meaning that they could spend less money and stay in the same metal level. In about thirty percent of these counties, all enrollees are worse off. In almost all of the rest, about forty percent, there are winners and losers, but in the aggregate, the subsidized lose more than the unsubsidized win. Overall, in about 70 percent of FFM counties with a new carrier, subsidized enrollees will lose purchasing power, while in about 66 percent of these counties, unsubsidized customers will see premium reductions. In population terms, about two-thirds of subsidized enrollees in counties with a new carrier will find plans to be less affordable, while a little more than half of unsubsidized enrollees will see lower premiums.