This tracker monitors preliminary 2019 premiums in the Affordable Care Act’s marketplaces as insurers file rate information with state regulators. It shows preliminary premium information in a major city in each available state for the lowest-cost bronze plan and “benchmark” silver plan, which is used to determine the size of the premium tax credits available to low- and moderate-income enrollees. The tracker also shows how those premiums are changing from 2018 and what a 40-year-old enrollee making $30,000 annually would pay before and after available tax credits.