Medicare Part D Drug Coverage 2027: Tiers, Out-of-Pocket Cap and Price Changes
How 2027 drug plans work, from the deductible to the yearly cap. Call or text 813-302-7151.
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A low drug-plan premium tells you very little about the cost of the medicines you take. A plan may place your prescription on a higher tier, prefer a different pharmacy or require authorization before paying.
For a useful Part D comparison, we enter the active medications, strengths, quantities and pharmacies, then look at the year as a whole.
How Part D and Medicare Advantage drug plans work
Standalone Part D plans generally work with Original Medicare. Many Medicare Advantage plans include Part D in the same enrollment. These routes are not freely interchangeable: enrolling in a separate drug plan while in an Advantage HMO or PPO can disrupt that coverage. Check any employer, retiree or VA drug benefits before making a change, and retain notices stating whether other coverage is creditable.
Drug tiers and your plan’s formulary
A formulary identifies the drugs a plan covers and the requirements attached to them. Tiers group drugs for cost sharing, but numbering is not identical across all plans. Check the exact medicine, strength and dosage form. Prior authorization, step therapy and quantity limits are separate from the tier. A pharmacy being in network does not necessarily mean it offers the plan's preferred pricing.
The yearly out-of-pocket cap for 2027
Part D has a yearly cap on what you pay out of pocket for covered drugs. In 2026 the cap is $2,100. In 2027 it goes up to $2,400. Once your out-of-pocket spending on covered Part D drugs reaches the cap, you pay nothing more for covered Part D drugs for the rest of that calendar year. Your monthly premium and drugs your plan does not cover do not count toward it.
| Part D limit | 2026 | 2027 |
|---|---|---|
| Yearly out-of-pocket cap for covered drugs | $2,100 | $2,400 |
| Highest deductible any drug plan may charge | $615 | $700 |
Some plans have a lower deductible or none at all. Covered insulin has its own limit: no more than $35 for a one-month supply of each covered insulin product, with no deductible (Medicare.gov: insulin). Figures are from Medicare.gov: Part D costs; we update this page when new figures are published. The Part D cap is separate from a Medicare Advantage plan’s yearly limit on medical costs.
Medicare negotiated drug prices (new drugs added in 2027)
CMS publishes the selected drugs and negotiated prices for each effective year. The 2027 selection includes the grouped semaglutide products Ozempic, Rybelsus and Wegovy, among other medicines. A negotiated price is not a promise of your pharmacy copay and does not remove coverage or diagnosis requirements. Use the official list rather than treating a news report about one drug as a rule for every prescription.
Why your medication cost changed this year
Your cost can change because of the deductible, tier, pharmacy, prescribed quantity or a formulary update. Compare the pharmacy receipt with the plan's explanation of benefits. A refill early in the year can cost differently from one after the deductible. If the charge looks wrong, ask the plan whether the prescription processed under the correct benefit and whether an authorization is missing.
Extra Help if your income is limited
Extra Help can lower your drug plan premium, deductible and copays if you qualify. For 2026, the limits are yearly income below $23,940 for one person or $32,460 for a married couple, and resources below $18,090 or $36,100. Some people get Extra Help automatically; others apply through Social Security. If a charge at the pharmacy surprises you, do not stop a medicine without talking to your doctor first. Ask the plan and the pharmacy to check the claim while you look into help paying.
Send us your medication list before December 7
Open Enrollment runs October 15 to December 7. Before December 7, send us the prescriptions you still take and the pharmacies you use. Include any changes your doctor already expects for next year. We compare the plans available to you and point out restrictions you may need to take up with the prescriber. A plan comparison is not an approval of any medication.
Official resources: Medicare.gov: what drug plans cover; CMS: 2027 Rate Announcement; CMS: 2027 Part D base beneficiary premium; CMS: selected drugs and negotiated prices; Medicare.gov: help with drug costs.
We do not offer every plan available in your area. For information on all of your options, please contact Medicare.gov, call 1-800-MEDICARE, or contact your local State Health Insurance Assistance Program (SHIP).
Frequently Asked Questions
Is there a maximum out-of-pocket for Medicare Part D?
Yes. The Part D out-of-pocket cap is $2,100 in 2026 and $2,400 in 2027. Premiums and drugs your plan does not cover do not count toward it.
Will Medicare Part D premiums go up in 2027?
Some will and some will not, because each plan sets its own 2027 premium. Check your Annual Notice of Change and compare your total yearly cost, not just the premium. The 2027 national base beneficiary premium of $41.33 is used to figure late enrollment penalties; it is not what any plan charges.
What drugs did Medicare negotiate prices for?
CMS publishes the selected drugs and their negotiated prices by year; the 2027 list includes Ozempic, Rybelsus and Wegovy, among other medicines. Check the CMS list for your exact product.
Which drugs are not covered by Medicare Part D?
Some drugs and uses are excluded by Medicare law, and each plan’s formulary leaves out other drugs. A formulary exception can sometimes get a drug the plan left out covered, but it cannot override an exclusion in the law.
How do I find my drug’s tier on a Medicare plan?
Look up the drug in the plan’s current formulary by its full name, strength and form. The formulary shows the tier and any restrictions, such as prior authorization or quantity limits.
What is the best Part D plan for my medications?
The best plan for you is the one with the lowest total yearly cost for your exact medicines at a pharmacy you can use, without approval problems. We run that comparison with every drug you take.
Can I change Part D plans if my drug is dropped?
Not automatically. Ask your plan for a transition supply or a formulary exception, and check whether you have a Special Enrollment Period; otherwise you can switch during Open Enrollment, October 15 to December 7.
This guide is general information, not legal, tax or medical advice. Your plan documents, including the Summary of Benefits and Evidence of Coverage, control what is covered and what you pay.
About the Author
Raymundo Guzman
I am Raymundo Guzman, a licensed independent insurance agent and the owner of Covered by Guzman. On the health side, I help Florida individuals, families and small businesses compare ACA Marketplace plans, Medicare Advantage and Part D, and dental and vision coverage, checking doctors and medications before anything is submitted. I work in English and Spanish, and a member of our team speaks Arabic. We usually meet by phone or video, and I stay available after enrollment.
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