Medicare Part D premiums in 2026 are not a single flat amount; instead, there is a national “base” premium of about $38.99 that is used for calculations, while actual plan premiums vary by insurer and state and average around the mid‑$40s per month for stand‑alone drug plans. Higher‑income enrollees also pay an extra income‑related surcharge (IRMAA) on top of their plan premium, which can add roughly $15–$90 per month in 2026 depending on income.

Quick Scoop: 2026 Medicare Part D Premiums

  • The national base beneficiary premium for Medicare Part D in 2026 is set at $38.99.
  • This base premium is mainly used to calculate penalties and some subsidies, not as the amount you actually pay for a specific plan.
  • The average stand‑alone Part D premium in 2026 is projected to be about $46.50 per month , though real premiums range widely by plan and state.
  • In many states, monthly premiums for basic stand‑alone plans range from around $0 up to about $45–$50 , but some popular plans in certain states can be over $100.
  • If your income is above roughly $109,000 (single) or $218,000 (married filing jointly) , you will owe an IRMAA surcharge for Part D of about $14.50 to $91.00 per month in 2026, added on top of your plan’s premium.
  • The standard Part D deductible limit for 2026 is about $615 , meaning plans can’t set a deductible higher than that amount, though some plans use a lower or even $0 deductible.

Key 2026 Cost Numbers

Here are the headline dollar figures for Medicare drug coverage in 2026:

  • National base Part D premium: $38.99.
  • Average stand‑alone Part D premium: about $46.50 per month.
  • Typical premium range in many states: approximately $0–$45.70 for many basic stand‑alone plans, with some popular options notably higher depending on the state.
  • Maximum Part D deductible: about $615 for 2026.
  • Catastrophic/maximum out‑of‑pocket threshold for Part D drugs: about $2,100 in 2026, reflecting the new cap under the drug cost reforms.

How IRMAA Affects 2026 Part D Premiums

For higher‑income beneficiaries, premiums include both the plan amount and an extra surcharge:

  • Income‑related surcharges apply if your 2024 modified adjusted gross income is above about $109,000 (single) or $218,000 (married filing jointly).
  • In 2026, Part D IRMAA surcharges range from about $14.50 to $91.00 per month , depending on which income bracket you fall into.
  • Your total monthly cost for drug coverage in 2026 is:
    • Part D plan premium (varies by plan and state) + Part D IRMAA amount (if your income is above the threshold).

Changes vs. 2025

2026 brings modest but noticeable increases compared with 2025:

  • The national base premium rises from $36.78 in 2025 to $38.99 in 2026 (about a 6% increase).
  • The Part D deductible limit climbs from $590 in 2025 to about $615 in 2026 (roughly a 4% increase).
  • The out‑of‑pocket cap for Part D drug spending moves from $2,000 in 2025 to about $2,100 in 2026 , reflecting inflation adjustments.
  • Many popular stand‑alone plans will see either small premium reductions or increases depending on the state, with some enrollees facing up to about a $50 increase in specific plans while others see lower premiums.

What This Means For You

  • Your exact 2026 premium depends on:
    • The specific Part D or Medicare Advantage plan you choose in your zip code.
    • Whether your income triggers IRMAA in 2026.
  • The best way to estimate your cost is to:
    • Check your 2024 income against the IRMAA brackets for 2026.
* Use the official plan‑comparison tools or insurers’ websites to see premiums and drug costs for your medications in your area.

Information gathered from public forums or data available on the internet and portrayed here.