The short answer
In 2026 your out of pocket spending on covered Part D drugs is capped at 2,100 dollars. Once you reach it, catastrophic coverage starts automatically and you pay nothing out of pocket for covered Part D drugs for the rest of that calendar year.
There is a ceiling on what covered drugs can cost you in a calendar year, and you reach it without asking anyone. The hard part is not the number. It is knowing which of the money you spend on medicine is being counted toward it.
What is the Part D out-of-pocket cap this year?
The cap is 2,100 dollars in 2026. That is the point at which your out of pocket spending on covered Part D drugs stops, for the rest of that calendar year. It applies to everyone with Medicare drug coverage, and reaching it is automatic rather than something you claim.
Two other 2026 figures sit underneath it and both are worth knowing, because they decide how fast you travel toward the ceiling.
No Medicare drug plan may have a deductible of more than 615 dollars in 2026, and some plans have none at all. After the deductible, you pay 25 percent of the cost as coinsurance for your generic and brand-name drugs until you reach the ceiling.
Here is the whole year in three stages.
| Stage | What you pay | When it ends |
|---|---|---|
| Deductible | All out of pocket costs, if your plan has one | At your full deductible, up to 615 dollars in 2026 |
| Initial coverage | 25 percent of the cost as coinsurance | When your spending reaches 2,100 dollars in 2026 |
| Catastrophic | Nothing out of pocket for covered Part D drugs | The end of the calendar year |
The word doing the most work in that table is calendar. All of it resets on January 1.
What counts toward the cap?
Not everything you spend on medicine counts. What counts is spending on covered Part D drugs, and CMS gives that running total its own name: true out of pocket costs. It describes it as the portion of spending on covered Part D drugs made by you, or made on your behalf by certain third parties.
Read the second half of that again. Made on your behalf. If a program pays part of your drug costs for you, that payment can still move you toward the ceiling.
Medicare's own description of the stages says the same thing in plainer words. Your 2,100 dollars in 2026 includes certain payments made on your behalf, such as through the Extra Help program.
The cap is a counting rule, not a benefit. This is our reading rather than a rule anyone states. Three facts sit behind it.
The threshold is reached by spending made by you or on your behalf. That running total is what decides which phase you are in. And a premium is a monthly charge for having coverage rather than a payment for a drug.
So the ceiling is arithmetic performed on one specific pot of money, and knowing which pot is the entire skill. Those three facts are the government's. Putting them together is ours.
CMS also describes what changed in the counting for 2025. Payments for supplemental benefits from Part D sponsors and from employer group waiver plans were brought in, and payments under the new Manufacturer Discount Program were kept out.
What happens after I hit the cap?
You enter catastrophic coverage, and you pay nothing out of pocket for covered Part D drugs for the rest of that calendar year. It happens automatically. There is no form, no call and no approval, and your plan is not deciding whether to grant it.
The document that tells you where you stand is the Explanation of Benefits your plan sends the month after the pharmacy bills them.
It lists the prescriptions you filled, what your plan paid, what you and others have paid, which coverage stage you are in, and what counted toward your out of pocket costs and your total drug costs. Those last two are different numbers, and the difference is the point of this whole article.
One thing does not wait for the cap. Insulin has its own ceiling that sits outside these stages entirely, and it does not require you to meet a deductible first. This publication's article on the insulin cost cap carries that rule.
Do premiums count toward the cap?
No. Your premium is a monthly amount you pay for coverage whether you get any covered drugs or not, and the cap is on out of pocket spending for covered Part D drugs. Those are two different payments, and only one of them is being counted.
That distinction catches people because both leave the same bank account.
Your premium also moves for reasons that have nothing to do with your medicine. It depends on the plan you chose, it can be higher because of your income, and a Part D late enrollment penalty is added to it if you owe one. None of that touches the ceiling.
The practical consequence is uncomfortable and worth saying plainly. Someone can pay a premium every month for a whole year and be no closer to the cap on the last day of December than on the first day of January.
What happened to the donut hole?
It is gone. In 2025 the coverage gap phase, which almost everyone called the donut hole, was eliminated. The Coverage Gap Discount Program that went with it ended at the same time and was replaced by the Manufacturer Discount Program. The standard benefit now runs in three phases rather than four.
That is why the table earlier in this article has three stages and not four. Deductible, initial coverage, catastrophic. The phase that used to sit between the second and the third is gone.
This matters for a specific and practical reason. Advice written before 2025 describes a shape the benefit no longer has, and a lot of that advice is still sitting on the internet where a search will find it.
If something you are reading tells you to plan around a coverage gap, it is describing a phase that no longer exists.
How does the Prescription Payment Plan spread these costs?
It changes when you pay, not what you owe. The Medicare Prescription Payment Plan spreads your out of pocket costs for covered drugs across the calendar year, so you get a monthly bill from your plan instead of paying the pharmacy. Medicare states plainly that it does not save you money.
The ceiling still applies underneath it. In a single calendar year you will never pay more than you would have paid at the pharmacy without the option, and never more than 2,100 dollars in 2026.
So the two things answer different questions. The cap decides the most you can spend in a year. The payment option decides how that spending is spread across the months.
All plans offer it, taking part is voluntary, and there is no cost to participate. Medicare names seven situations where it may not suit someone, including having low yearly drug costs or getting Extra Help.
This publication's article on the Medicare Prescription Payment Plan sets out how the monthly bill is calculated and what happens if you miss one.
What changed this year
One figure on this page has a published predecessor and the others do not, so this section says only what can be shown. The out of pocket threshold moved. The structure of the benefit changed in 2025. For the deductible ceiling and the coinsurance rate, no 2025 figure was found and none is claimed.
The out of pocket threshold is 2,100 dollars in 2026, up from 2,000 dollars in 2025. The deductible ceiling is 615 dollars in 2026 and the initial coverage stage charges 25 percent coinsurance, both stated for 2026 without a claim about what they were before.
The three stage structure itself dates from 2025, when the coverage gap phase and the Coverage Gap Discount Program were eliminated and the Manufacturer Discount Program took their place.
Source: Medicare's drug coverage costs page and the CMS Part D redesign fact sheet.
What this means for you
The ceiling is 2,100 dollars in 2026, it applies to everyone who has Medicare drug coverage, and you arrive at it without applying or calling anyone. Your plan does not decide whether to give it to you. It is the point where an arithmetic that has been running all year finishes.
What gets counted is narrower than what you spend. It is out of pocket spending on covered Part D drugs, including certain amounts paid on your behalf. Your premium is not in that count, however reliably it leaves your account.
Once you arrive, covered Part D drugs cost you nothing out of pocket until December 31, and then the count starts again at zero.
The phase that used to sit between initial coverage and catastrophic coverage no longer exists. Any guidance describing a donut hole is describing a design that ended in 2025.
For how the monthly bills work if you spread your costs, read this publication's article on the Medicare Prescription Payment Plan. For the separate ceiling on insulin, read the article on the insulin cost cap.
FAQ
Does the Part D cap apply to every drug I take?
No. The ceiling is on your out of pocket spending for drugs covered by your plan, which means drugs on that plan's own list of covered drugs.
Spending on a drug your plan does not cover is a different thing, and this publication's article on whether your drug is covered explains how those lists work and how a drug can move on or off one during the year.
The distinction matters more than it sounds, because a reader who is paying a great deal for a medicine their plan does not cover can be nowhere near the ceiling while feeling as though they must be close to it. Your Explanation of Benefits shows which of your spending counted, so it is the document that settles the question.
Is the cap per person or per household?
The cap is on YOUR out of pocket spending on covered Part D drugs. Medicare describes the threshold in terms of your own spending, including certain amounts paid on your behalf, so it is a total belonging to one person's coverage rather than to a household.
Reaching it on one person's coverage does nothing for anyone else's costs. The figures for 2026 are a deductible that cannot exceed 615 dollars, 25 percent coinsurance in the initial coverage stage, and a 2,100 dollar out of pocket threshold, and each of them applies to one person's own running total rather than being shared with anyone.
The figures for 2026 are a deductible that cannot exceed 615 dollars, 25 percent coinsurance in the initial coverage stage, and a 2,100 dollar out of pocket threshold, and all of them apply per person rather than being shared.
If someone else helps pay for my drugs, does that count toward the cap?
It can. CMS describes the running total as the portion of spending on covered Part D drugs made by you, or made on your behalf by certain third parties. Medicare's own description of the stages says the same thing: the 2,100 dollar threshold in 2026 includes certain payments made on your behalf, such as through the Extra Help program.
The word doing the work there is certain: not every third party payment counts, and CMS describes the categories changing for 2025 to bring in supplemental benefits from Part D sponsors and employer group waiver plans while keeping out payments under the Manufacturer Discount Program.
For your own situation the plan is the party that can tell you what has been counted.
When does the count reset?
On January 1. Everything in this article works on the calendar year, January through December: the deductible, the initial coverage stage, the out of pocket threshold and catastrophic coverage.
If you reach the ceiling in September, covered Part D drugs cost you nothing out of pocket for the rest of that year, and the counting begins again from zero when the next calendar year starts, with that year's figures.
This is also why the timing of a large prescription can matter to a reader who is close to the ceiling late in a year, and why the same set of prescriptions can cost quite different amounts depending on which side of the new year they fall.
Why do people still talk about a donut hole?
Because it existed for a long time and a great deal of written guidance about it is still findable. The coverage gap phase was eliminated in 2025, along with the Coverage Gap Discount Program, and the Manufacturer Discount Program took its place. The standard benefit now has three phases rather than four: annual deductible, initial coverage, and catastrophic coverage.
If you read something that tells you to plan around a gap in the middle of the year, you are reading a description of the old design rather than the one your plan uses now. That matters practically rather than historically, because guidance written before 2025 can send a reader to prepare for a stage their plan no longer has.
Does hitting the cap mean my drugs are free?
It means you pay nothing out of pocket for covered Part D drugs for the rest of that calendar year. Two limits sit inside that sentence. Covered means drugs on your plan's list, so a drug your plan does not cover is not included.
And out of pocket refers to what you pay at the pharmacy, not to your monthly plan premium, which continues whether you have reached the ceiling or not. Insulin is worth mentioning separately, because its ceiling works differently.
A one month supply of each covered insulin product costs no more than 35 dollars in 2026, and no deductible applies to it. That rule sits outside these stages entirely.
