Medicare Part D

Medicare's New $2,100 Drug Cap Starts Jan. 1: What It Means

TUALATIN, Ore. — Starting January 1, 2027, the hard ceiling Medicare puts on what you pay out of pocket for prescription drugs rises to $2,400 for the year. Once you hit it, you pay nothing more for covered Part D medications for the rest of 2027.

For older adults in Tualatin who take expensive medications — think insulin, blood thinners, cancer pills, or specialty drugs for autoimmune conditions — this is one of the biggest Medicare changes in a generation. Here is what is actually changing, and what you can do about it during Open Enrollment, which runs through December 7.

The $2,100 cap, in plain English

In 2027, no one with a Medicare Part D drug plan will spend more than $2,400 out of pocket on covered prescriptions in a calendar year. That figure comes directly from CMS Part D program rules (medicare.gov).

A few things to know:

• The cap applies to what you pay — deductibles, copays, and coinsurance for covered drugs.
• It does not include your monthly premium.
• It only counts drugs your Part D plan actually covers. If a medication is not on your plan's formulary, those costs do not count toward the cap.
• The cap resets every January 1.

For comparison, the cap was $2,000 in 2025 and did not exist at all before 2024. Some people used to pay $10,000 or more per year on a single specialty drug. That era is over.

The "donut hole" is gone

If you have been on Medicare for a while, you probably remember the coverage gap — the dreaded "donut hole" where your costs jumped once your total drug spending hit a certain level. It has been a source of stress and confusion for close to 20 years.

As of 2025, the donut hole is gone. Part D now has just three simple phases:

1. Deductible phase — you pay full negotiated price until you meet your plan's deductible (up to $615 in 2026 and up to $700 in 2027). 2. Initial coverage phase — you pay copays or coinsurance while your plan pays the rest. 3. Catastrophic phase — once your out-of-pocket spending hits the yearly cap ($2,100 in 2026, $2,400 in 2027), you pay nothing more for covered drugs that year.

That is the whole map. No middle stage where costs suddenly spike.

The Medicare Prescription Payment Plan

Here is the piece a lot of people miss. Even with the yearly cap, you could still face a big bill in January or February if an expensive prescription hits early in the year.

That is where the Medicare Prescription Payment Plan comes in. It is a new, optional program — sometimes called "M3P" or drug cost smoothing — that lets you spread your out-of-pocket drug costs across the calendar year in monthly payments instead of paying the pharmacy all at once.

A few details worth knowing:

• It is free to join, and every Part D and Medicare Advantage drug plan must offer it.
• You still owe the same total amount for the year — it is just billed monthly by your plan instead of at the counter.
• It tends to help most if you have high drug costs early in the year, or predictable high costs throughout the year.
• You can opt in before the year starts, or any month during the year.

If you miss a monthly payment, you can be removed from the program, though you would not lose your drug coverage itself. Ask your plan or check medicare.gov for the specifics.

What this means for Tualatin residents

Tualatin sits in Washington County, where — as in the rest of Oregon — every Part D and Medicare Advantage prescription drug plan must follow these new federal rules. The $2,100 cap, the three-phase design, and the payment plan option are not extras a carrier can choose to offer. They apply across the board.

That said, plans still differ in the drugs they cover, the pharmacies they work with, and how they price medications before you hit the cap. Two neighbors on the same street could have very different experiences depending on which plan they chose and which drugs they take. This is exactly why Open Enrollment matters.

Use Open Enrollment to check your plan

The Annual Enrollment Period runs October 15 through December 7, 2026. Changes you make take effect January 1, 2027.

A few things worth doing before December 7:

• Read the Annual Notice of Change your current plan mailed you in September. It spells out what is changing in your coverage.
• Make a list of every prescription you take, including doses.
• Use the Plan Finder at medicare.gov to compare how different plans handle your specific drug list.
• If you already have a Medicare Advantage plan, remember you also have a second window — Medicare Advantage Open Enrollment, January 1 to March 31 — to switch to a different Advantage plan or return to Original Medicare.

One more note: higher-income beneficiaries pay an IRMAA surcharge on Part B and Part D premiums. For 2026, IRMAA kicks in above $109,000 for a single filer (based on your 2024 tax return). It does not affect the $2,100 cap, but it does affect what you pay monthly.