Quick answer: In 2026, Medicare Part D caps your out-of-pocket drug costs at $2,100 (up from $2,000 in 2025). Once you reach it, covered drugs cost $0 for the rest of the year. The donut hole is gone, the max deductible is $615, insulin is $35/month, and the free Medicare Prescription Payment Plan lets you spread costs monthly. Applies to standalone Part D and Medicare Advantage drug plans.
104 daysuntil open
Outside the windows, Special Enrollment Periods (SEP) still let you change plans if you moved, lost coverage, qualify for Extra Help / dual eligible, or had a plan terminated. Call to see if you qualify.
Check SEP eligibility (15-min) →
The big Part D changes from the Inflation Reduction Act are now fully phased in, and the 2026 numbers stepped up again:
Part D now moves through three simple phases in a calendar year — no donut hole in the middle:
| Phase | What you pay | Details |
|---|---|---|
| 1. Deductible | You pay 100% of drug costs until you meet your plan’s deductible. | Up to $615 in 2026 — many plans set it lower, and some are $0. No deductible applies to insulin. |
| 2. Initial coverage | You pay copays or coinsurance set by your plan. | Continues until your out-of-pocket spending on covered drugs reaches $2,100. |
| 3. Catastrophic | You pay $0 for covered drugs. | Kicks in once you hit the $2,100 cap — for the rest of the calendar year. |
The cap counts your out-of-pocket spending on covered drugs (deductible + copays + coinsurance). Your monthly premium does not count toward it.
Even with a $2,100 ceiling, a single expensive prescription can hit you with a big bill in January. The Medicare Prescription Payment Plan (new in 2025, continuing in 2026) fixes the timing: you pay $0 at the pharmacy counter and your plan bills you in capped monthly amounts across the year instead. It is free, it is optional, and you will never pay more in total than you would have anyway.
The $2,100 cap is the same on every plan — it is the law, not a feature one plan offers over another. What still varies a lot, and what actually decides your total cost, is:
That is exactly the comparison we run for free — see also our drug cost checker, 2026 Medicare cost guide, and Medicare enrollment windows.
Related 2026 briefs: Medicare Advantage carrier exits.
Give us your drug list and we’ll run it against the plans in your Texas county — free — to find the lowest total cost and set up the monthly payment plan if it helps. No pressure, no fee.
Sources: Medicare.gov (2026 Part D costs, Medicare Prescription Payment Plan) · CMS 2026 Part D benefit parameters · Inflation Reduction Act Part D redesign. Figures are for the 2026 plan year and may change. Medicare Twins is a licensed insurance agency in Texas and is not connected with or endorsed by the U.S. government or the federal Medicare program.
For 2026 there is a hard cap of $2,100 on what you pay out of pocket for covered Part D drugs (your deductible, copays, and coinsurance). Once your spending reaches $2,100, you pay $0 for covered drugs for the rest of the calendar year. The cap was $2,000 in 2025 and is indexed each year. It applies to both standalone Part D plans and Medicare Advantage plans that include drug coverage.
No. The $2,100 cap is for out-of-pocket drug costs only — your deductible, copays, and coinsurance on covered drugs. Your monthly plan premium (and any Part D IRMAA surcharge for higher incomes) is separate and does not count toward the cap.
It is gone. The coverage gap (donut hole) was eliminated starting in 2025. Part D now has just three phases: the deductible, then your initial-coverage copays until you hit the $2,100 out-of-pocket cap, then $0 (catastrophic) for the rest of the year.
Yes. The Medicare Prescription Payment Plan (sometimes called M3P), which began in 2025, lets you pay $0 at the pharmacy and instead get billed monthly by your plan. It is free and optional, and you are never charged more than you would have paid out of pocket — it just smooths the timing. It helps most if you have a high one-time drug cost early in the year. You opt in through your Part D or Medicare Advantage drug plan.
Yes. Under Part D, each covered insulin is capped at $35 for a one-month supply, and no deductible applies to insulin. The same $35 cap applies to insulin used with a traditional pump (covered under Part B).
Yes. The $2,100 out-of-pocket drug cap applies to both standalone Part D plans (PDP) and Medicare Advantage plans that include drug coverage (MA-PD). The key is still picking a plan whose formulary covers your specific medications at a good tier — that is what we check for you, free.
Online booking is taking a moment. Call us and we’ll grab a time together — or start a free quote.
Before you go
No pressure and no plan names — just a plain-English guide plus the offer of a free, no-obligation review with Medicare Twins, licensed Texas agent serving Texas. Leave an email or phone and we’ll send it over.
