This policy brief from the Center on Budget and Policy Priorities analyzes the proposed rule misleadingly named as “market stabilization” released yesterday. The proposed rule would raise premiums, out-of-pocket costs, or both, for millions of moderate-income families. If finalized as proposed, the rule would reduce the amount of health care that marketplace plans have to cover. That would allow insurers to offer plans with higher deductibles and other out-of-pocket costs than they can now sell through the marketplaces. It would also have the hidden impact of reducing the Affordable Care Act’s (ACA) premium tax credits, which help moderate-income marketplace consumers afford health care. As a result, the rule would leave millions of families with higher premiums and worse coverage. Comments on the proposed rule are due on March 7, 2017.