If you're one of the 67 million Americans enrolled in Medicare, 2026 brings some of the most significant cost changes in the program's history — and understanding exactly what you'll pay requires looking at each part of Medicare separately. The headline change is the $2,000 annual out-of-pocket cap on Part D prescription drug spending, a provision of the Inflation Reduction Act that fully takes effect this year. But that's only one piece of a more complex picture that includes higher Part B premiums, a revised deductible structure, and Medicare Advantage plans with out-of-pocket maximums that vary by thousands of dollars depending on which plan you chose.

Let's start with Part B, which covers doctor visits, outpatient services, and most preventive care. The standard Part B premium for 2026 is $185.00 per month, an increase from $174.70 in 2025. Most people pay this amount directly, either as a deduction from their Social Security check or as a quarterly bill if they haven't yet claimed Social Security benefits. The Part B annual deductible is $257 in 2026, up from $240 in 2025. After you meet that deductible, Medicare typically covers 80% of approved costs, leaving you responsible for the remaining 20% — with no cap unless you have a Medigap supplemental policy or are enrolled in a Medicare Advantage plan. Higher-income beneficiaries pay more through what's called IRMAA (Income-Related Monthly Adjustment Amount). In 2026, individuals with annual income above $106,000 — or couples above $212,000 — pay surcharges ranging from roughly $74 to $443 per month on top of the standard premium.

Part A, which covers inpatient hospital stays, skilled nursing facility care, and hospice, has its own cost structure. Most people pay no Part A premium if they or their spouse worked and paid Medicare taxes for at least 10 years. However, the Part A inpatient hospital deductible in 2026 is $1,676 per benefit period — not per year, which is an important distinction. If you're hospitalized twice in the same year but the stays are separated by at least 60 days, you could owe that deductible twice. Days 1 through 60 of a hospital stay are covered after that deductible. From days 61 to 90, you pay a daily coinsurance of $419. Beyond 90 days, you draw on your 60 lifetime reserve days at $838 per day. For skilled nursing facility stays, the first 20 days are fully covered after a qualifying hospital stay; days 21 through 100 carry a daily coinsurance of $209.50 in 2026.

Now for the change that may matter most to people managing chronic conditions or expensive medications: the Part D out-of-pocket cap. Starting in 2026, once you've spent $2,000 out of pocket on covered prescription drugs in a calendar year, your cost-sharing drops to zero for the rest of the year. This replaces the old catastrophic coverage phase, which required beneficiaries to pay 5% of drug costs indefinitely after reaching a certain threshold — a structure that left people with serious illnesses paying thousands of dollars annually. The $2,000 cap applies to costs you pay directly, including deductibles, copays, and coinsurance. Importantly, the Low Income Subsidy (LIS) program, also called Extra Help, continues to provide additional assistance for beneficiaries with limited income and resources, potentially reducing costs to just a few dollars per prescription. If you're not sure whether you qualify for Extra Help, you can apply through Social Security at ssa.gov or through your State Health Insurance Assistance Program (SHIP) counselor at no cost.

Also new in 2026 under Part D is the Medicare Prescription Payment Plan, sometimes called the smoothing program. This optional feature allows you to spread your out-of-pocket drug costs across monthly installments throughout the year rather than paying large lump sums early in the year when deductibles reset. For someone who takes a specialty medication and typically hits their deductible in January or February, this can provide meaningful cash-flow relief. You must opt into this program through your Part D plan — it doesn't happen automatically. Contact your plan directly or visit Medicare.gov to see if your plan participates and how to enroll.

For the roughly 33 million Americans enrolled in Medicare Advantage (Part C) plans in 2026, the cost picture is more variable — and that variability is exactly why plan selection during the Annual Enrollment Period (October 15 through December 7) matters so much. CMS set the maximum in-network out-of-pocket limit for Medicare Advantage plans at $9,350 in 2026 for in-network services. For plans that use a combined in-and-out-of-network limit, the maximum is $14,000. These are ceilings, not averages — many plans set their actual limits lower, and some plans in competitive markets may offer limits of $4,000 to $6,000. Once you hit your plan's out-of-pocket maximum, the plan covers 100% of covered services for the rest of the year. But here's the catch: not all services count toward that maximum equally. Dental, vision, and hearing benefits — which many Advantage plans advertise prominently — often have their own separate cost-sharing structures that don't count toward the main out-of-pocket limit. Read the Summary of Benefits carefully before assuming those extras reduce your financial exposure.

Medicare Advantage premiums also vary widely. Some plans continue to offer $0 monthly premiums in 2026, though the number of such plans has declined in many markets as insurers adjust to lower CMS reimbursement rates. Even a $0-premium plan still requires you to pay the Part B premium of $185.00 per month. Plans with richer benefits — lower copays, broader networks, or more generous drug formularies — typically charge higher monthly premiums. The right trade-off depends on how much care you actually use. A healthy 67-year-old who rarely sees specialists may do fine with a $0-premium plan with a higher out-of-pocket maximum. Someone managing diabetes, heart disease, or cancer may be better protected by a plan with a $50 monthly premium and a $4,500 out-of-pocket cap.

If you're enrolled in Original Medicare and a Medigap (Medicare Supplement) policy, your out-of-pocket exposure is largely determined by which plan letter you hold. Medigap Plan G, the most popular option for new enrollees since Plan F was closed to new beneficiaries in 2020, covers the Part A deductible, Part B coinsurance, and most other cost-sharing — leaving you responsible only for the Part B deductible of $257 per year. Plan N covers similar costs but requires copays of up to $20 for office visits and up to $50 for emergency room visits. Medigap premiums vary significantly by insurer, age, and location, but Plan G premiums for a 70-year-old typically range from $120 to $220 per month depending on the state and carrier. If you're in one of the 13 states with a birthday rule — including California, Florida does not have one, but states like Oregon, Nevada, Illinois, and New York do — you have a 30-day window each year around your birthday to switch Medigap plans without medical underwriting, which can help you find a lower premium without risking denial based on health history.

To get personalized help comparing your actual costs under different plan scenarios, contact your State Health Insurance Assistance Program. SHIP counselors are trained, unbiased, and free. You can find your local SHIP through the Medicare.gov website or by calling 1-800-MEDICARE. They can pull up specific plan options in your ZIP code, walk through the formulary for your medications, and help you calculate projected annual costs based on your actual health utilization — which is far more useful than comparing premium stickers alone.