Health insurers selling plans in the Affordable Care Act's marketplaces are required to reduce cost-sharing in silver plans for low- and moderateincome people earning between 100 percent and 250 percent of the federal poverty level. In 2016, as many as 7 million Americans may have plans with these cost-sharing reductions. In the largest markets in the 38 states using the federal website for marketplace enrollment, the cost-sharing reductions substantially lower projected out-of-pocket costs for people who qualify for them. However, the degree to which consumers' out-of-pocket spending will fall varies by plan and how much health care they use. This is because insurers use deductibles, out-of-pocket limits, and copayments in different combinations to lower costsharing for eligible enrollees. In 2017, marketplace insurers will have the option of offering standard plans, which may help simplify consumers' choices and lead to more equal cost-sharing.