Later Life

Medicare 2026: Every Change That Affects Your Wallet

The 2025–2026 period brought the most significant Medicare drug benefit change in nearly two decades. The Part D out-of-pocket cap on prescription costs — $2,000 when it launched in 2025, now $2,100 for 2026 — is transformative for people on expensive specialty medications. Here's every change and what it means in dollars.

The big one: the Part D out-of-pocket cap ($2,100 in 2026)

Before 2025, Medicare Part D had no annual out-of-pocket cap. People with expensive medications — cancer drugs, biologics, specialty diabetes drugs — could spend $8,000–$15,000 per year in drug costs. The cap arrived on 1 January 2025 at $2,000 and is indexed each year — for 2026 it is $2,100 (the Part D deductible is capped at $615). The worked examples below show the first-year (2025) impact.

Medication ExampleAnnual Drug Cost2024 OOP (no cap)2025 OOP (capped)Annual Savings
Eliquis (blood thinner)$6,700$3,350 (50% coinsurance)$2,000$1,350
Xarelto (blood thinner)$5,900$2,950$2,000$950
Cancer biologic$180,000$8,000+ (catastrophic)$2,000$6,000+
Insulin (brand)$7,200$3,600$2,000$1,600
Multiple medications$12,000+$8,000+ (catastrophic tier)$2,000$6,000+

Medicare Prescription Payment Plan (M3P): Also introduced recently — you can spread your drug costs over 12 monthly payments instead of paying large amounts early in the year when you hit your deductible and initial coverage phase. Opt in through your Part D plan.

All 2026 Medicare numbers

Medicare Benefit20242025Change
Part A deductible (per benefit period)$1,632$1,676+$44
Part A daily coinsurance (days 61–90)$408/day$419/day+$11/day
Part B premium (standard)$174.70/mo$185.00/mo+$10.30/mo
Part B deductible$240/yr$257/yr+$17
Part D OOP capNo cap ($8,000 catastrophic)$2,000Major new cap
Part D deductible (max)$545$590+$45

IRMAA: if you earn more, you pay more

Higher-income Medicare beneficiaries pay Income-Related Monthly Adjustment Amount (IRMAA) surcharges on Part B and Part D. These are based on your income from 2 years ago (2023 income affects 2025 premiums).

2023 Income (Single)2023 Income (Joint)2025 Part B PremiumExtra Monthly Cost
Under $106,000Under $212,000$185.00$0
$106,001–$133,000$212,001–$266,000$259.00+$74
$133,001–$167,000$266,001–$334,000$370.00+$185
$167,001–$200,000$334,001–$400,000$480.90+$295.90
Above $500,000Above $750,000$628.90+$443.90

If you had a one-time income event (Roth conversion, home sale, etc.) in 2023, you can file Form SSA-44 to request removal of IRMAA based on life-changing event.

Drug price negotiations: what's changing in 2026

The Inflation Reduction Act gave Medicare the right to directly negotiate drug prices for the first time. The first 10 negotiated drugs take effect January 2026:

These prices apply to Medicare beneficiaries only. They do not affect private insurance costs.

Action items for 2026

The out-of-pocket cap is the structural change

The most consequential reform in decades is the annual cap on out-of-pocket prescription costs under Part D. Before it, there was no ceiling: a beneficiary on an expensive specialty drug faced unlimited exposure year after year. The cap converts that open-ended risk into a known maximum, and for people on high-cost medication it is worth more than every other change combined.

Alongside it, beneficiaries can spread the capped amount across the year in monthly instalments rather than meeting it in January, which addresses the cash-flow problem the cap alone did not solve.

Negotiated drug prices

Medicare can now negotiate prices directly for selected high-spend drugs, with the list expanding over time. This only affects you if you take a drug on the list — check each year, because the set changes and the saving is specific rather than general.

Insulin is capped at $35 a month per prescription, and recommended adult vaccines under Part D carry no cost-sharing.

What to actually do during open enrolment

Plans change every year, and the single most valuable habit is treating your current plan as a fresh decision rather than a default.

  1. Read the Annual Notice of Change. It arrives each autumn and states exactly what is changing in your plan's premium, formulary and network.
  2. Re-check the formulary against your actual prescriptions. Drugs move tiers and get dropped; a plan that was cheapest last year may not be.
  3. Confirm your doctors are still in network if you are on Medicare Advantage. Networks change annually.
  4. Compare total annual cost, not premium. A low premium with a restrictive formulary frequently costs more overall.

The Medigap decision is close to irreversible

This is the one genuinely one-way door in Medicare, and it is poorly understood. During your Medigap open enrolment period — the six months from when Part B starts at 65 — you can buy any Medigap policy regardless of health.

After that window, in most states insurers may medically underwrite: they can charge more or decline you. So someone who chooses Medicare Advantage at 65 and later wants to switch to Original Medicare with Medigap may find they cannot get a policy at a reasonable price, or at all. The initial choice therefore deserves more thought than the annual plan comparison.

Higher earners pay more

The income-related monthly adjustment (IRMAA) raises Part B and Part D premiums above set income thresholds, and it uses your tax return from two years earlier. A one-off event — selling a property, a large Roth conversion — can therefore raise premiums two years later. If income has since fallen for a qualifying reason such as retirement, you can ask for the determination to be reconsidered.

Frequently asked questions

What is the biggest recent change to Medicare?
The annual cap on out-of-pocket prescription costs under Part D. Before it there was no ceiling, so a beneficiary on an expensive specialty drug faced unlimited exposure year after year. Beneficiaries can also now spread the capped amount across the year in monthly instalments.

Do I need to review my plan every year?
Yes. Plans change annually, and the Annual Notice of Change states exactly what is changing in premium, formulary and network. Re-check the formulary against your actual prescriptions and confirm your doctors are still in network, then compare total annual cost rather than premium.

Why does the Medigap decision matter so much?
It is close to one-way. During the six months from when Part B starts at 65 you can buy any Medigap policy regardless of health. After that, most states allow medical underwriting — so someone who chooses Medicare Advantage at 65 may later be unable to switch at a reasonable price, or at all.

Why did my Medicare premium go up?
Possibly IRMAA, the income-related adjustment to Part B and Part D premiums, which uses your tax return from two years earlier. A one-off event such as a property sale or a large Roth conversion can raise premiums two years later. If income has since fallen for a qualifying reason such as retirement, you can request reconsideration.

Estimate the real cost of a chronic condition

Medicare leaves gaps — model medications, copays and out-of-pocket costs beyond what it covers.

Try the Chronic Illness Cost Calculator →

Sources

Figures compiled from the sources above and not individually verified; tax limits and thresholds change annually — confirm on irs.gov or the relevant authority before relying on them. General information, not financial advice.

Akash Randive · Founder & Editor

Akash Randive founded and edits DecisionsCalc — an independent personal-finance enthusiast (not a licensed adviser) who builds the calculators and compiles the data from public sources, with AI assistance and full transparency. Every figure cites a primary source and an automated freshness check blocks stale data. See our editorial standards & methodology.

Cite this article

Randive, A. (2026). Medicare 2026: Every Change That Affects Your Wallet. DecisionsCalc. https://decisionscalc.com/articles/medicare-changes/