A large subsidy program that has helped insurers offering Affordable Care Act (ACA) compliant coverage in the individual market expires this year. A new working paper finds that insurers incurred substantial losses overall despite receiving much larger back-end subsidies per enrollee through the ACA’s reinsurance program than they expected when they set their premiums for 2014. The study also estimates that in the absence of the reinsurance program insurers would have had to set premiums 26% higher, on average, in order to avoid losses—assuming implausibly that the overall health of the risk pool would not have worsened as a result of the higher premiums. More...