If your prescription costs have felt a little lighter lately, you’re not imagining it. A 2022 law called the Inflation Reduction Act set off the biggest changes to Medicare’s drug coverage in years, and most of them are now in full effect. Here’s a plain-English rundown of what changed and what it means for you.
The $2,000 out-of-pocket cap
This is the change people feel the most. Under Part D, the part of Medicare that covers prescription drugs, there’s now a $2,000 annual cap on what you pay out of pocket for covered drugs. Once your spending on covered drugs reaches $2,000 in a year, you pay $0 for them the rest of the year.
That cap also closed the old “donut hole,” the coverage gap that used to leave people on the hook for a big chunk of their drug costs in the middle of the year. Part D now moves through three simpler phases: your deductible, initial coverage, and then catastrophic coverage where you pay nothing once you’ve hit the cap. If you take several maintenance medications, this can make a real difference in your budget. You can see roughly where you’d land with our Drug Cost Calculator, and there’s more detail in our companion piece, the $2,000 drug cap explained.
$35 insulin and free vaccines
Two more changes are simple and worth knowing:
- Insulin is capped at $35 for a month’s supply under Part D. There’s no deductible to meet first for insulin — that $35 cap applies right away.
- ACIP-recommended adult vaccines covered under Part D, like the shingles vaccine, are now $0. No copay, no deductible.
These two alone quietly save a lot of people real money each year, especially anyone managing diabetes or staying current on recommended shots.
Medicare drug price negotiation
For the first time, Medicare is allowed to negotiate the price of some of the most widely used, highest-cost drugs. The first 10 negotiated prices took effect January 1, 2026. The list includes some very common medications:
| Some of the first negotiated drugs |
|---|
| Eliquis · Jardiance · Xarelto · Januvia |
| Farxiga · Entresto · Enbrel · Imbruvica |
More drugs are added to the negotiation list in the years ahead. The exact savings depend on your plan and which drugs you take, but the goal is lower prices on medicines a lot of people rely on. If you take something like Eliquis or Jardiance, it’s worth checking how your plan covers it. Our Formulary Lookup can help you see whether a specific drug is on your plan’s list.
Spreading your costs with the payment plan
One more piece is easy to overlook: the Medicare Prescription Payment Plan, sometimes called M3P. It’s a free option that lets you spread your out-of-pocket drug costs across the year in monthly payments instead of paying a large amount all at once at the pharmacy counter.
It doesn’t change how much you pay overall — your costs still count toward that $2,000 cap — but it can smooth out the timing. That’s especially helpful if you’d otherwise face a big bill early in the year when your deductible resets. Joining is optional, and there’s no cost to sign up.
What this means for everyday beneficiaries
Put together, these changes do something simple: they make drug costs more predictable. You now have a firm ceiling on covered drug spending, a steady price on insulin, free recommended vaccines, lower prices on some of the most common medications, and a way to pay over time if you need it.
The one thing the law doesn’t do is pick the right plan for you. Drug coverage still varies a lot from one plan to the next, and the plan that covers your medications best this year might not be the best fit next year. That’s worth a yearly look.
If you’d like a second set of eyes on your Part D coverage, or you just want to understand how these changes affect your own list of medications, I’m happy to walk through it with you. There’s no pressure and no cost — reach out anytime and we’ll sort it out together.