How much does Medicare Part D cost in 2025?

The average estimated monthly Part D plan premium in 2025 is $46.50.1 However, the total cost of a Part D plan will depend on your plan details, the drug tier you choose and more.

Here’s a look into what Part D is, how much it might cost and other information. 

Key points

  • The average estimated monthly Part D plan premium in 2025 is $46.50. 
  • Other factors can affect the cost of Part D including monthly premium, yearly deductible and copayments.
  • High-income earners may pay a surcharge known as the “income-related monthly adjustment amount” (IRMAA).
  • If you don’t sign up for Part D when first eligible, a Part D late enrollment penalty will be added to your monthly premium.

What is Medicare Part D?

Medicare Part D is optional insurance that helps cover the costs of prescription drugs. Part D is not a part of Original Medicare (Part A and Part B) and is offered through private insurance companies. Everyone who qualifies for Original Medicare can enroll in a Part D plan.

How much does Medicare Part D cost?

The cost of a Part D plan will be different for each person. Private insurance companies set their own prices and the cost will vary based on which plan you join.

Some factors that affect Part D costs include:

  • Monthly premium
  • Yearly deductible
  • Copayments or coinsurance 
  • Drug tier  
  • Out-of-pocket costs

Is the Medicare Part D premium based on income? 

Some people with higher income might pay a higher premium for a Part D plan. If your income is above $106,000 and you file taxes individually, or $212,000 if you’re married and file jointly, you’ll pay an extra amount in addition to your plan premium. This is called an income related monthly adjustment amount (IRMAA).2

Note: If you have a Medicare Advantage prescription drug plan (MAPD), you’ll also have to pay a higher premium if your income is higher. 

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Medicare Advantage plans help expand your Medicare coverage beyond Original Medicare. Explore Humana's Medicare Advantage plans in your area today!

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What is the Part D late enrollment penalty?

The Part D late enrollment penalty is a surcharge added to your Part D monthly premium. Medicare gives this penalty to people who don’t sign up for Part D drug coverage before Medicare enrollment period deadlines. In most cases, you have to pay the penalty as long as you have Medicare drug coverage.

How to avoid the Part D late-enrollment penalty 

3 ways to avoid paying the Part D late enrollment penalty include:

  1. Enrolling in Medicare drug coverage when you’re first eligible.
  2. Not going more than 63 days without a drug plan. 
  3. Keeping records of your prior drug coverage. 

For more information, check out this full article on the Part D enrollment penalty.

Explore Humana Medicare Part D plans

With affordable premiums and access to more than 60,000 pharmacies nationwide, Humana’s prescription drug plans combine easy access and affordability. Humana offers 3 Medicare Part D prescription drug plans: Humana Basic Rx Plan (PDP), Humana Premier Rx Plan (PDP) and Humana Value Rx Plan (PDP). Explore our Part D prescription drug plans today!

Frequently asked questions

1. What is Medicare “Extra Help?”

Medicare’s “Extra Help” program is available for people with limited income and resources. This program helps pay for Part D premiums, deductibles and copayments related to a Medicare prescription drug plan.

2. What is Medicare Part D catastrophic coverage?

Catastrophic coverage is an out-of-pocket maximum for Part D plans. Once you reach this maximum, you won’t have to pay a copayment or coinsurance for covered Part D drugs for the rest of the calendar year.

In 2024, you get catastrophic coverage once your out-of-pocket spending reaches $8,000. Starting in 2025, all Medicare plans will include a $2,000 cap on out-of-pocket costs for prescription drugs covered by your plan.3

How can we help?

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Source

  1. “Medicare Advantage and Medicare Prescription Drug Programs to Remain Stable as CMS Implements Improvements to the Programs in 2025,” CMS.gov, last accessed Nov. 13, 2024.  
  2. “What does Medicare cost?,” Medicare.gov, last accessed Oct. 8, 2024. 
  3. “Catastrophic coverage,” Medicare.gov, last accessed Oct. 8, 2024.