Medicare Part D
Medicare Part D in 2026: a real ceiling on what you pay for drugs
Part D is prescription drug coverage sold by private insurers and approved by Medicare. Since the out-of-pocket cap arrived, the worst-case number matters more than the premium, and in 2026 that number is $2,100.
Figures reviewed for 2026
What it is
Standalone drug coverage for Original Medicare
Original Medicare covers very little in the way of outpatient prescriptions. Part D fills that gap. It is optional, it is sold by private insurers, and every plan must be at least as generous as the standard benefit defined by Medicare.
Plans are not standardized the way Medigap plans are. Each one publishes a formulary, groups drugs into tiers, negotiates with pharmacies, and sets its own premium. That is why two plans in the same ZIP code can differ by thousands of dollars for the same person.
If you have a Medicare Advantage plan, drug coverage is usually built in. You cannot use a standalone Part D plan alongside an Advantage plan; enrolling in one will disenroll you from the other.
$2,100
Annual out-of-pocket cap on covered drugs in 2026
After that, $0 for covered drugs for the rest of the year.
$615
Highest deductible any Part D plan may charge in 2026
Many plans set theirs lower, and some at $0.
$0
Most common monthly premium
Premiums vary widely by plan and state.
Corrected for 2026
The coverage gap is gone. Here is how the year actually runs now.
Older Medicare articles describe a donut hole where you paid full price for drugs. That ended in 2025. These are the three phases you will experience in 2026.
Deductible
No Part D plan may charge more than $615 in 2026, and many charge $0. You pay the full negotiated price of your drugs until the deductible is met.
Initial coverage
You pay your plan’s copay or coinsurance on each prescription, and the plan pays the rest, until your total out-of-pocket spending reaches the annual cap. Manufacturer discounts apply to brand drugs in this phase.
Catastrophic coverage
Once you have spent $2,100 out of pocket on covered drugs in 2026, you pay $0 for covered drugs for the rest of the calendar year. The cap resets on January 1.
Choosing well
Four things to check before you enroll
The formulary
Every plan publishes the list of drugs it covers. Check each prescription you take, by exact name and dose.
The tier
A covered drug can still be expensive if it sits on a high tier. Tier placement is where plans differ most.
Your pharmacy
Preferred pharmacies cost less than standard ones. A plan with a great premium is a bad deal if your pharmacy is out of network.
Restrictions
Prior authorization, step therapy, and quantity limits can delay a refill. Ask about them for your specific drugs.
The penalty is permanent
For every full month you go without creditable drug coverage after you are first eligible, Medicare adds 1 percent of the national base beneficiary premium to your Part D premium, for life. Going without coverage to save a small premium is the most expensive habit in Medicare. If you are already paying a penalty, it does not disappear, but we can make sure the plan you choose is not compounding it.
Answers
Part D questions
Is the coverage gap still a thing?
No. The gap people call the donut hole was eliminated when the $2,000 cap took effect in 2025. In 2026 the design is simple: a deductible, a period of normal cost sharing, and then a hard $2,100 ceiling on what you pay out of pocket for covered drugs for the year. Any article describing a donut hole is out of date.
What happens if I do not enroll when I am first eligible?
You pay a permanent late enrollment penalty of 1 percent of the national base beneficiary premium for every full month you went without creditable drug coverage. It is added to your Part D premium for as long as you have Part D. The only protection is other creditable coverage, such as a qualifying employer or retiree plan, or VA coverage.
What counts toward the $2,100 cap?
Your deductible payments, your copays and coinsurance, and certain payments made on your behalf such as Extra Help. Premiums never count. Neither do drugs your plan does not cover.
Do my premiums go up because of my income?
Possibly. If your modified adjusted gross income from two years ago was above $109,000 filing single or $218,000 filing jointly, you pay a Part D income-related monthly adjustment amount on top of your plan premium, in addition to the Part B surcharge.
What should I check before choosing a drug plan?
Four things: whether each of your prescriptions is on the formulary, which tier it sits in, whether your pharmacy is in network, and whether any of your drugs require prior authorization or step therapy. A plan that looks cheap can cost more than a pricier one if it does not cover your medications.
Official sources
Check it at the source
Every figure on this page comes from the agencies below. They are the primary record, and none of these links costs you anything.
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Find a 2026 drug plan that covers your prescriptions
Send us your medication list and we will check formularies, tiers, and pharmacy networks so you are not paying more than you need to.