In 2024, the average monthly premium for a benchmark silver plan on the federal Affordable Care Act exchange will rise by 4% compared to 2023, CMS revealed on Oct. 25. Premiums for a benchmark plan, or the average second-lowest-cost silver tier plan, are used to calculate advance premium tax credits (APTC) that rise in tandem with premium rates. CMS noted that the year-over-year benchmark plan premium increase of 4% between 2023 and 2024 is the same as the increase seen between 2022 and 2023. Also continuing next year will be enhanced subsidies that make ACA exchange plans much more affordable than they were before the American Rescue Plan Act (ARPA) of 2021. To that end, the average benchmark plan rate after premium tax credits are applied, for a 40-year-old at 150% of the federal poverty level, will continue to be $0 in 2024 — compared to $55 before ARPA was enacted.