The Part D out-of-pocket limit increases to $2,400

In 2027, the annual Part D out-of-pocket threshold is $2,400, up from $2,100 in 2026. Once you reach that applicable $2,400 amount for covered Part D drugs, you generally pay $0 for covered Part D drugs for the rest of the calendar year. This protection matters most if you take expensive medications. The $2,400 figure is not a cap on everything you spend on prescriptions. Monthly Part D premiums generally do not count toward the threshold, and drugs your plan does not cover may not count either.

The Part D deductible increases to $700

The standard maximum Part D deductible increases to $700 in 2027, compared with $615 in 2026. That does not mean every Medicare drug plan will charge a $700 deductible. Plans can use different benefit designs. Some may have a lower deductible or apply it only to certain drug tiers. Compare more than the premium: medications, deductible, copays, coinsurance, and pharmacy all affect what you pay.

The redesigned Part D benefit continues

The major restructuring of Medicare Part D that began in 2025 remains in place. The old coverage gap — often called the “donut hole” — is no longer part of the benefit structure. For 2027 the basic progression is: deductible, then initial coverage, then catastrophic coverage. After you reach the applicable annual out-of-pocket threshold, you generally have $0 cost sharing for covered Part D drugs for the rest of the year.

More drugs will have Medicare-negotiated prices

Medicare’s Drug Price Negotiation Program continues to expand. Negotiated prices for the first group of 10 selected drugs took effect in 2026. In 2027, negotiated prices for another 15 selected Part D drugs take effect. Those medications treat a variety of serious and chronic conditions. The effect on your costs can vary. Actual costs depend on the medication, your Part D plan, the The plan’s drug list. It says which prescriptions are covered and which cost tier they are on., and the plan’s cost-sharing.

The Medicare Prescription Payment Plan continues

This program lets people with Medicare prescription drug coverage spread out-of-pocket drug costs over the calendar year instead of paying a large amount at the pharmacy all at once. It does not lower the cost of your prescriptions. It changes when you pay. If you need an expensive covered medication early in the year, spreading those costs may make budgeting easier.

Part D premiums may look different in 2027

The temporary Part D Premium Stabilization Demonstration ends after 2026. That does not mean every Part D premium will increase. Individual premiums depend on each plan and the annual Medicare bidding process. Read your 2027 Annual Notice of Change (ANOC) and compare drug coverage during Annual Enrollment. For 2027, the Medicare Part D base premium in Medicare’s formula is $41.33. That is not necessarily the premium you will pay. Actual premiums vary among plans.

Medicare Advantage benefits can change every year

If you have a Medicare Advantage plan, do not assume 2027 coverage will match 2026. Plans can change premiums, medical copays and coinsurance, provider networks, drug lists, drug copays, dental, vision, hearing, over-the-counter allowances, transportation, and other extra benefits. Your plan’s Annual Notice of Change explains changes that take effect January 1. Read it even if you are satisfied with the current plan.

  • Monthly premiums
  • Medical copayments and coinsurance
  • Provider networks
  • Prescription drug The drug lists a plan uses. Each list says which prescriptions are covered and which cost tier they are on. and copays
  • Dental, vision, and hearing extras
  • Over-the-counter allowances and other supplemental benefits

Some supplemental-benefit rules are changing

CMS has additional requirements for certain Medicare Advantage supplemental benefits. Debit cards used for those benefits have to connect a purchase to items the plan covers. Plans that offer certain Special Supplemental Benefits for the Chronically Ill (SSBCI) also have to post the written eligibility rules. The SSBCI article links the public pages and lists what Los Angeles County plans filed for 2027. A posted page is not proof the plan in your ZIP includes the item.

Star Ratings are changing

CMS is changing how Medicare Advantage and Part D Star Ratings are calculated, including removing some measures. Star Ratings can be one comparison tool. They should not be the only one. Your doctors, hospitals, prescriptions, pharmacies, expected care, and total estimated costs may matter more when you decide whether a particular plan fits.

2027 Part B premium is not final yet

Checked October 28, 2026: CMS has not announced the final 2027 Medicare Part B premium or deductible. The final 2027 Part A deductible and related Part A cost-sharing amounts are also still pending. The official 2026 standard Part B premium is $202.90 per month, and the annual Part B deductible is $283. A current projection for 2027 is $209.50 per month for Part B and $292 for the deductible, but these are estimates only and are not the official rate. The September 28, 2026 CMS release was about average Medicare Advantage and stand-alone Part D premiums, not the Part B premium. Until CMS publishes the official amounts, do not treat those figures as final. See Cost of Medicare for the side-by-side comparison.

Important 2027 Part D numbers already published

These Part D parameters are already available. CMS also posted the 2027 Medicare Advantage and Part D landscape and the plan benefit files used on this site (landscape dated September 22, 2026; benefits filed October 1, 2026) and the The plan’s drug list. It says which prescriptions are covered and which cost tier they are on. and beneficiary cost files dated October 8, 2026, posted October 15, 2026. Those files support a plan list and a drug check. They are not a pharmacy bill, and they do not prove a doctor is in the network. Confirm current figures on Medicare.gov.

  • Standard maximum Part D deductible$615 in 2026, $700 in 2027
  • Annual out-of-pocket threshold$2,100 in 2026, $2,400 in 2027
  • Cost sharing after the threshold for covered Part D drugs: $0 in both years
  • 2027 base premium in Medicare’s formula$41.33. That is a formula number, not the premium on a bill.

What to check this year

Review your Medicare coverage every year. Do not look only at the premium. Check whether your doctors and hospitals remain available, whether your prescriptions are still covered, what those medications will cost, whether your preferred pharmacy remains competitive, and whether medical and extra benefits have changed. A plan that worked in 2026 may still be appropriate in 2027 — it is worth checking.

When you can change Medicare plans for 2027

The Medicare Annual Enrollment Period runs October 15 – December 7 each year. Eligible people can make certain Medicare Advantage and Part D changes for the following year. Changes generally take effect January 1, 2027. Other enrollment periods or Special Enrollment Periods may apply depending on your situation. Confirm on Medicare.gov.

Official sources

Confirm current figures on these official pages before you rely on a number.

  • [Medicare.govMedicare costs](https://www.medicare.gov/basics/costs)
  • CMS Newsroom
  • [CMSPrescription drug coverage](https://www.cms.gov/medicare/prescription-drug-coverage)
  • [Medicare.govPlan Finder](https://www.medicare.gov/plan-compare/)

Sources

This article is based primarily on official CMS materials, including the 2027 Medicare Advantage and Part D Final Rule, the 2027 Rate Announcement, Part D benefit parameters, Medicare Prescription Payment Plan guidance, and Drug Price Negotiation Program information.