
Prescription drug costs finally have a firm ceiling, and millions of seniors are about to feel the difference. Thanks to the Inflation Reduction Act, the Part D cap sets a hard limit on how much beneficiaries can spend out‑of‑pocket on covered medications. That means no more unpredictable catastrophic bills, no more runaway costs late in the year, and no more fear of hitting the old “donut hole.” Here are five clear explanations of how the Part D cap works now.