medicare

Medicare in 2026: What to Change, What to Check, and What to Leave Alone Before December 7

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The Annual Enrollment Period for 2026 is open today and closes at 11:59 p.m. local time on December 7, 2026. That gives you roughly four weeks to change a Part D plan, move between Medicare Advantage and Original Medicare, or decide to change nothing at all. In most counties a beneficiary can choose from dozens of Advantage plans and about two dozen stand-alone drug plans, and the differences between them now run well beyond the monthly premium. What follows is a plain account of the decisions in front of you in 2026, the deadlines that govern them, and the traps that cost readers the most money. Every figure here is built for the 2026 plan year. Where a dollar amount is set annually by CMS or Social Security, this article tells you to confirm the current number rather than quoting a stale one.

The 2026 Annual Enrollment Window Ends December 7

Medicare's Annual Enrollment Period for 2026 opened on October 15 and closes at 11:59 p.m. local time on December 7. Miss it and your current coverage rolls into the new plan year unchanged, whether or not that plan still fits. During this window you can switch from one Medicare Advantage plan to another, drop Medicare Advantage and return to Original Medicare, join a stand-alone Part D plan, switch Part D plans, or drop drug coverage entirely. Three things you cannot do here: buy a Medigap policy without medical underwriting unless a guaranteed-issue right applies, add or drop Part B, or undo a change after the deadline passes. Medicare does not accept late elections because a plan mailed a brochure late or a call center was busy. Elections made online at Medicare.gov or by phone through 1-800-MEDICARE are timestamped, so keep the confirmation number. A plan that ends its contract or exits your county triggers a special election period, but that notice usually arrives in the fall and reads like routine marketing. People in Medicare Advantage also get a second chance from January 1 through March 31, when they can switch to another Advantage plan or return to Original Medicare and add a drug plan. That window does not let you join a stand-alone Part D plan if you are already on Original Medicare.

Original Medicare or Medicare Advantage in 2026: The Real Trade-Off

In Original Medicare you pay a 20% coinsurance for most Part B services with no annual cap, plus the Part A deductible for each hospital benefit period. A $40,000 outpatient surgery leaves you with an $8,000 bill if you hold no supplement. Medigap fills that gap and lets you see any provider in the country who accepts Medicare. Medicare Advantage replaces that arrangement with a network and a hard annual out-of-pocket ceiling that CMS sets each year; most 2026 plans publish the exact number in the Summary of Benefits. A plan advertising a $6,900 in-network maximum means that is the most you pay for covered in-network care, but out-of-network care in an HMO typically pays nothing outside emergencies. Advantage plans commonly require prior authorization for imaging, elective surgery, and skilled nursing stays, and the plan must decide routine requests within 14 days and urgent ones within 72 hours. Advantage plans often include dental, hearing, and fitness benefits that Original Medicare excludes. Neither structure is cheaper across the board. Someone with eight expensive prescriptions and three specialists usually does better on total cost with Original Medicare plus a Plan G, while a healthy person who wants one card and a predictable ceiling often does better in Advantage. Run both sides using your actual doctors and drugs.

Part D in 2026: The Out-of-Pocket Cap and What It Leaves Out

The biggest change in Part D since the program began is the annual out-of-pocket cap on covered drugs. Once your spending passes that cap in 2026, you pay $0 for covered Part D drugs for the rest of the year. The cap does not count premiums, drugs your plan does not cover, or prescriptions filled outside the plan's network, and it resets every January 1. CMS indexes the cap each year, so confirm the exact 2026 amount in your plan's Summary of Benefits rather than relying on last year's figure. The Medicare Prescription Payment Plan lets you spread your share across the calendar year in monthly installments instead of paying a large sum in January; you must opt in through your plan, and it changes the timing of your payments, not the total. Formularies change every January. A drug that sat on tier 2 in 2025 can move to tier 3 or 4 in 2026, and a prior authorization or step therapy requirement can appear without any change to your premium. Two plans with identical premiums can differ by thousands of dollars once you fill your actual prescriptions. The maximum deductible CMS permits is also set annually. Check every drug by name, dose, and quantity, and check the pharmacy, because preferred versus standard cost sharing can swing a 90-day fill by $50 or more.

Medigap in 2026: The Six-Month Window Most People Miss

Your best chance to buy a Medigap policy at a price that ignores your health history is a six-month window that starts the month you are 65 and enrolled in Part B. During that window an insurer cannot refuse you, charge you more for a health condition, or make you wait for coverage to begin. After it closes, most states allow medical underwriting, and a history of heart disease, diabetes with complications, or cancer can mean a denial or a rate two or three times higher. A handful of states, among them Connecticut, Massachusetts, Maine, and New York, give residents year-round or birthday-rule protections; verify your state's rule with the state insurance department. Plans C and F are closed to anyone who became eligible for Medicare on or after January 1, 2020, which leaves eight standardized letters: A, B, D, G, K, L, M, and N. Plan G pays the Part A deductible and nearly everything else except the Part B deductible. Plan N costs less but charges copays of up to $20 for office visits and $50 for emergency room visits that do not lead to admission. If you start in Medicare Advantage and want to move back, a 12-month trial right lets you return to Medigap without underwriting. After that first year, the door usually closes.

IRMAA: The Income Surcharge That Runs Two Years Behind

Medicare's income surcharge, known as IRMAA, is calculated from a tax return you filed two years earlier. Your 2026 Part B and Part D premiums are based on your modified adjusted gross income from 2024, plus any tax-exempt interest you reported. That lag surprises people who sold a rental property or took a large distribution and assumed the surcharge belonged to the same tax year. There are five income tiers, and each one adds a fixed dollar amount to the standard Part B premium and to your Part D premium; the dollar amounts and income thresholds are updated annually, so look up the 2026 brackets on the Social Security Administration site rather than using an older table. IRMAA is a cliff, not a phase-in: crossing a threshold by one dollar moves you into the next tier for the entire year. If your income dropped because you retired, had a work stoppage, married, divorced, or your spouse died, you can file Form SSA-44 and ask Social Security to use your current income instead. Keep documentation. The form asks for an estimated income and evidence of the life-changing event, and approvals are not automatic. If you never received a determination notice, request one.

Working Past 65 in 2026: The 63-Day Trap and the HSA Rule

Medicare rules for people still working hinge on the size of the employer. If your employer or your spouse's employer has 20 or more employees, the group health plan pays first and you can delay Part B without a penalty, provided you are covered through active employment. Coverage from COBRA, a retiree plan, or a severance arrangement does not count, and delaying Part B based on those plans creates a permanent late penalty of 10% for each 12-month period you went without it. Once the job or the coverage ends, you get an eight-month Special Enrollment Period to sign up for Part B, and the clock starts at the earlier of those two events. That window is longer than most people expect and shorter than the year they assume. Drug coverage has a separate rule: you must have creditable prescription coverage, meaning coverage at least as good as Medicare's, and a gap of 63 days or more triggers a Part D late penalty of 1% of the national base beneficiary premium for every month you were uncovered. That penalty follows you for life. One trap catches savers every year. If you enroll in Part A at 65 while still working, even while keeping the employer plan, you can no longer contribute to a health savings account. Stop contributions before the month Part A begins.

Common Mistakes That Cost Money During the 2026 Season

Seven errors account for most of the money people lose during the 2026 enrollment season. The first is treating December 7 as a soft deadline. It is not; the system locks and there is no grace period. The second is choosing a Part D plan by premium alone. A $0 premium plan with your inhaler on tier 4 can cost more than a plan charging $60 a month that covers it on tier 2. The third is skipping the Annual Notice of Change, the envelope that arrives by September 30 and lists exactly what is changing in your plan: premium, deductible, copays, pharmacy network, and drug tiers. Read it before you shred it. The fourth is assuming a doctor is in the network. Contracts change every January, and the front desk often answers "we take Medicare" without checking the specific Advantage plan. The fifth is believing Medicare covers dental, hearing aids, and routine vision. Original Medicare generally does not. The sixth is switching to a lower-premium Advantage plan without checking prior authorization rules for a specialist you already see. The seventh is forgetting the second enrollment window: from January 1 through March 31, Advantage members get one change, and Original Medicare members get none. If you make a mistake in December, that January window is your only repair for Advantage, and Medigap underwriting may block the way back.

How to Check Your Own Situation Before You Decide

Set aside an hour with three documents: your Annual Notice of Change, your current drug list with dosages and quantities, and your Medicare card. Write down every prescription, including eye drops and creams, and note the pharmacy you actually use. Then log into Medicare.gov and run the Plan Finder with those drugs and that pharmacy. Compare three numbers for each plan, not one: the annual premium, the deductible, and the estimated yearly drug cost the tool calculates. Check the plan's star rating while you are there, because a plan rated 5 stars for 2026 qualifies you for a one-time special enrollment period you can use between December 8 and November 30. Call each doctor and each hospital billing office and ask whether they are in network for that exact plan in 2026. If you travel or spend part of the year in another state, confirm the plan's out-of-area rules. If you have a Medicare Advantage plan, look up the prior authorization list for any service you expect, such as a knee replacement or an infusion. Finally, check your Social Security statement to see what Part B and Part D deductions are being taken, and compare them with the IRMAA bracket you expect for 2026. If a deduction looks wrong, call Social Security before December 7 rather than after.

Extra Help and State Programs That Lower 2026 Costs

Three programs reduce Medicare costs for people with limited income, and thousands of eligible households never apply. Extra Help, also called the Part D Low-Income Subsidy, lowers or eliminates the Part D premium, cuts drug cost sharing, and removes the late enrollment penalty for people who qualify. Income and asset limits are adjusted every year, so a 2026 application uses the 2026 limits, which you can confirm with your State Health Insurance Assistance Program or on the Social Security site. Medicare Savings Programs run through state Medicaid offices and pay the Part B premium for people under certain income thresholds; the Qualified Medicare Beneficiary level also pays Part A and Part B deductibles and coinsurance, and providers who accept Medicare cannot bill you for those amounts. Drug cost sharing can also be reduced through State Pharmaceutical Assistance Programs in roughly two dozen states. Applying takes one form and a phone call, and approval can be retroactive. SHIP counselors are free, independent of any insurance company, and funded to answer exactly these questions in every county. Their appointments fill up in November, so call early. If your income changed in the past year, say so on the application rather than assuming you will not qualify.

Your Next Steps Before December 7, 2026

Three decisions sit in front of you this month, and only three: keep what you have, switch to a different plan of the same type, or restructure between Original Medicare and Medicare Advantage. Work in this order. Read the Annual Notice of Change first, because it tells you what your current plan is doing to your premium, deductible, and drug tiers in 2026. Then build the drug list and price it out, since drug costs move more than premiums do from year to year. Then verify your doctors and hospital against the specific plan, not against Medicare generally. Then check your income against the IRMAA brackets and, if you had a life-changing event, file Form SSA-44 early enough for Social Security to act. If you are still working, confirm in writing whether your employer plan is primary and whether your drug coverage is creditable. Write down the date you will submit your election and do it at least a week before December 7. Doing nothing is a valid choice, but only after you have confirmed that your current plan still covers your drugs, your doctors, and your pharmacy at a price you can live with.

If any part of that sequence feels uncertain, talk it through with a licensed insurance agent who represents multiple carriers and can show you the plan details side by side. A good agent will ask about your prescriptions, your doctors, and your income before recommending anything, and will put the comparison in writing. Ask whether the agent is compensated by the plan you choose, and ask for the Summary of Benefits in writing so you can check the network and formulary yourself. Call before December 7, 2026, when you still have time to change your mind.

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Published 2026-11-11 12:13:07.036349+00:00