Medicare Part D

Prescription Drug Plans

Affordable coverage for your medications - updated for 2026.

Are you concerned about prescription drug costs? A Medicare Prescription Drug Plan (Part D) can give you peace of mind at an affordable price. Medicare prescription drug plans are made to supplement Original Medicare Plans A & B.

Typically, a prescription drug plan will provide four tiers of benefits - the higher the tier, the more expensive the copayments:

Generic prescription drugs
Preferred, brand-name prescription drugs
Non-preferred, brand-name prescription drugs
Specialty tier: High-cost prescription drugs

Drug costs under most Medicare Part D plans are low, but the amount you pay will vary by plan.

New in 2026: $2,100 Out-of-Pocket Cap

All Medicare Part D plans now have a maximum out-of-pocket limit of $2,100 for covered prescription drugs. Once you reach this limit, you pay nothing for covered medications for the rest of the calendar year. This is significantly lower than the 2024 limit of $8,000.

Understanding Your Plan Costs

Here are the common terms that explain what you will pay for a Prescription Drug Plan.

Premiums

The amount paid each month to keep your plan active.

Annual Deductible

Up to $615 in 2026

Begins with your first prescription of the plan year. You pay the full cost of your prescriptions until your spending reaches the deductible amount. No plan's deductible can exceed $615 in 2026, and some plans have a $0 deductible.

If your plan has a $0 deductible, you skip straight to the Initial Coverage phase. Keep in mind that some deductibles may only apply to drugs on specific tiers. Monthly premium payments do not count toward your deductible. Note: covered insulins and vaccines are exempt from the deductible.

Initial Coverage

You pay 25%

Begins immediately if your plan has no deductible, or once your prescription payments have met your plan's deductible.

During this phase, costs are shared across three parties:

25% You pay
65% Your plan pays
10% Drug manufacturer pays

Your share is paid as either a copayment (a set dollar amount) or coinsurance (a percentage of the drug's cost), depending on the tier level assigned to your drug.

This phase ends when your total out-of-pocket costs on covered drugs reach $2,100 for the year, at which point you enter Catastrophic Coverage. Monthly premium payments do not count toward this limit.

Catastrophic Coverage

You pay $0

Begins when your out-of-pocket costs reach $2,100 on covered drugs. Once you hit this limit, you pay nothing for covered Part D drugs for the remainder of the plan year.

0% You pay
60% Your plan pays
20% Drug manufacturer pays
20% Medicare pays

You will remain in this phase until December 31 of the plan year.

Medicare Prescription Payment Plan

New Option

An option available in 2026 allows you to spread your prescription drug costs evenly across the calendar year rather than paying large amounts all at once. For example, if you hit your $2,100 out-of-pocket cap early in the year, you could opt to pay in even monthly installments instead of one lump sum.

This option does not lower your total drug costs - it simply makes budgeting easier for those on a fixed income.

The 3 Phases of Part D Coverage in 2026

The Coverage Gap ("donut hole") has been permanently eliminated. Starting back in 2025, there are only three phases.

1

Deductible Period

You pay 100% of drug costs until you meet your deductible (up to $615). Some plans skip this phase entirely with a $0 deductible.

2

Initial Coverage

You pay 25% of covered drug costs. Your plan pays 65%, and the drug manufacturer covers 10%. This continues until you've spent $2,100 out-of-pocket.

3

Catastrophic Coverage

After $2,100 out-of-pocket, you pay $0 for covered medications through December 31.

You are eligible for Prescription Drug Plans if…

You are 65 years of age or older.
You are enrolled in Medicare Part A and/or Part B.
You are under 65 but have a qualifying disability.
You have end-stage renal disease that mandates dialysis or a kidney transplant.
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