Medicare Part D Base Premium Projected to Rise to $41.33/Month in 2027

CMS projects the 2027 Medicare Part D base premium at $41.33/month, up from 2026's $36 average. The increase reflects costs from the IRA benefit redesign — including a $2,100 out-of-pocket cap — flowing through to plan bids. MarketWatch reports high-cost drugs like GLP-1s add pressure. The 2026 dip looks transitional.