Medicare Part D
Medicare's New $2,100 Drug Cap: What Warren Seniors Should Know
WARREN, Mich. — Starting Jan. 1, 2027, Medicare's prescription drug program carries forward the big changes that began in 2025, with updated numbers. The headline: a hard ceiling on what people with Medicare pay out of pocket for covered prescription drugs in a calendar year — $2,100 in 2026 and $2,400 in 2027. For many older adults in Warren juggling multiple medications, that cap frames this fall's Annual Enrollment Period, which runs Oct. 15 through Dec. 7.
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Key takeaways
- The out-of-pocket limit for covered Part D prescription drugs is $2,100 in 2026 and $2,400 in 2027, whether you have a stand-alone Part D plan or a Medicare Advantage plan with drug coverage.
- Monthly premiums and drugs not on your plan's formulary don't count toward that $2,100 cap, so it's worth checking your plan's covered drug list each year.
- Since 2025, the old "donut hole" coverage gap is gone, leaving just three Part D phases: deductible, initial coverage, and catastrophic coverage where you pay nothing more once you hit the cap.
- A free, optional Medicare Prescription Payment Plan lets you spread your drug costs into monthly installments through your plan, but it doesn't lower your total costs, and you can sign up or opt out by contacting your plan directly.
Here's a plain-English guide to what's changing, how the optional monthly payment plan works, and where to get local help.
The $2,100 out-of-pocket cap, explained
Once you spend up to the annual cap on covered Part D drugs — $2,100 in 2026 and $2,400 in 2027 — you pay $0 for the rest of the year on those covered medications. That cap applies whether your drug coverage comes through a stand-alone Part D plan or a Medicare Advantage plan that includes drug coverage.
A few things count toward the $2,100:
- What you pay toward your Part D deductible (the maximum allowed is $615 in 2026 and $700 in 2027).
- Copays and coinsurance for covered drugs at the pharmacy.
Monthly premiums do not count toward the cap, and drugs your plan doesn't cover don't count either. That's why checking your plan's formulary — the list of covered drugs — matters every year.
The "donut hole" is gone
If you've been on Medicare for a while, you probably remember the coverage gap, nicknamed the "donut hole." That was the middle stage where your share of drug costs jumped once you and your plan hit a spending threshold.
As of 2025, that gap was eliminated. Part D now has three phases instead of four: the deductible, the initial coverage phase, and catastrophic coverage — where you pay nothing for covered drugs after hitting the annual cap. The cap is $2,100 in 2026 and $2,400 in 2027. (Source: CMS, Medicare Part D program rules, medicare.gov.)
The Medicare Prescription Payment Plan
Even with the $2,100 cap, some people face a big bill in January or February if they take an expensive medication early in the year. That's where the Medicare Prescription Payment Plan comes in.
This is a free, optional program that lets you spread your out-of-pocket drug costs across the calendar year in monthly installments instead of paying the full amount at the pharmacy counter. You still owe the same total — the payment plan doesn't lower your costs — but it smooths the timing so a $600 refill in January doesn't hit all at once.
You sign up through your drug plan, not through Medicare directly. If you think it might help, ask your plan how to opt in. You can also drop out if it stops being useful.
What this looks like in Warren
Warren is in Macomb County, where Medicare beneficiaries choose between Original Medicare paired with a stand-alone Part D plan, or a Medicare Advantage plan that bundles drug coverage. The 2027 plan lineup for Macomb County is detailed in each plan's Annual Notice of Change and on Medicare.gov's Plan Finder. The same federal rules — the annual out-of-pocket cap ($2,100 in 2026 and $2,400 in 2027), the maximum Part D deductible ($615 in 2026 and $700 in 2027), and access to the payment plan — apply across every Part D and Medicare Advantage drug plan sold in the county.
That means the cap isn't something you have to shop for. It's built into the program. What still varies plan to plan is which drugs are on the formulary, which pharmacies are in network, and what you pay before you hit the cap.
A quick note on higher-income enrollees
If your income is above $109,000 as a single filer (or $218,000 filing jointly) based on your 2024 tax return, you may pay an income-related monthly adjustment amount, known as IRMAA, on top of your standard Part B and Part D premiums in 2026. Social Security will notify you if this applies. It doesn't affect the $2,100 cap — that's the same for everyone.
Dates to circle
- Oct. 15 – Dec. 7, 2026: Annual Enrollment Period. Join, switch, or drop a Part D or Medicare Advantage plan for 2027.
- Jan. 1, 2027: New coverage — and the $2,400 cap — takes effect.
- Jan. 1 – March 31, 2027: Medicare Advantage Open Enrollment. If you're in an MA plan, you get one chance to switch to a different MA plan or return to Original Medicare.
By the numbers
Medicare Part B premium, 2006–2026
The standard monthly Part B premium has climbed from $88.50 in 2006 to $202.90 in 2026. Hover any point for that year’s premium.
Source: CMS. Standard premium shown; in some hold-harmless years many existing enrollees paid less. Confirm at Medicare.gov.
By the numbers
How people get Medicare in Macomb County
(MA penetration in Macomb County)
MA penetration from CMS enrollment data; Medigap share is an estimate. U.S. average is about 54% Medicare Advantage. These are area-level figures, not plan-specific.
Prescription coverage
How Medicare Part D works in 2027
The old coverage gap ("donut hole") was eliminated as of 2025 (three phases now). The hard yearly cap on what you pay out of pocket for covered drugs is $2,100 in 2026 and $2,400 in 2027, and you can spread those costs across the year with the Medicare Prescription Payment Plan.
Try it
How the 2026 Part D drug cap works
Slide to your estimated yearly prescription costs and see how the new $2,100 out-of-pocket cap protects you. This illustrates the standard Part D benefit; your plan may structure costs differently.
Once your out-of-pocket spending on covered drugs reaches $2,100, you pay nothing more for the rest of 2026. Confirm details at Medicare.gov.
Explore
When can you enroll? An interactive year
Enrollment windows are federal and the same nationwide. Confirm your personal dates at Medicare.gov or 1-800-MEDICARE.
Good to know
Frequently asked questions
Does the $2,100 cap apply to all my prescriptions?
Do I have to sign up for the $2,100 cap?
Is the Medicare Prescription Payment Plan the same as my Part D plan?
- CMS — Medicare Part D program rules (medicare.gov)
For personalized answers, contact Medicare.gov, 1-800-MEDICARE, or your local SHIP.