The ACA's Effect On The Individual Insurance Market.

The vision of the Affordable Care Act (ACA) for a reformed individual health insurance market included requirements and incentives for insurers to manage risk instead of avoiding it, minimum standards for coverage adequacy, income-related subsidies, managed competition through health insurance Marketplaces, and new programs to promote insurer competition. Against this vision, we assessed how insurance markets evolved between 2014 and 2019, using metrics such as premium changes, insurer participation, and enrollment. We also assessed how federal and state policy choices during the implementation of the ACA may have affected market performance. The article closes with an assessment of recent federal-level policy choices and the evidence to date about their effect on insurance markets, together with a discussion of how market experience under the ACA can inform policy makers who seek to further expand consumers' access to affordable, comprehensive coverage.