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AEP 2026: 25 Days Left to Choose Your 2027 Medicare Coverage

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Medicare's Annual Enrollment Period for 2026 closes at 11:59 p.m. local time on December 7. That leaves 25 days from today, November 12, and anything you elect in that window takes effect January 1, 2027 and holds for the full calendar year unless a special enrollment period later intervenes. About 69 million people are enrolled in Medicare, and more than half now receive benefits through a Medicare Advantage plan rather than Original Medicare, which means most readers are comparing private plans with different networks, drug lists, and copays. For anyone in a standalone Part D plan, AEP is the only routine chance to change it. What follows walks through the windows, the 2026 numbers behind them, the mistakes that produce January surprises, and a way to check your own situation in one afternoon.

What AEP 2026 Changes and What It Leaves Alone

The 2026 Annual Enrollment Period opened October 15 and closes December 7 at 11:59 p.m. local time. During those weeks you can move from Original Medicare into a Medicare Advantage plan, switch from Advantage back to Original Medicare, trade one Advantage plan for another, or join, drop, or change a standalone Part D drug plan. Those are the levers the window controls, and they are the only ones.

AEP does not sell you a Medigap policy. In 46 states and the District of Columbia, Medigap guaranteed-issue rights exist only during your six-month Medigap Open Enrollment Period, which begins the month you are 65 or older and enrolled in Part B. Connecticut, Massachusetts, Maine, and New York run year-round guaranteed-issue rules, and a few other states have birthday rules that allow one switch a year. Outside those protections, an insurer can underwrite you, charge more, or decline.

Doing nothing is a decision with a price. If you take no action by December 7, you stay in your current plan for 2027, and the new premium, deductible, and drug list printed in your Annual Notice of Change apply whether you read them or not. Plans also leave markets. A non-renewal letter should have arrived by October 1, and if yours did, you must choose something else or be returned to Original Medicare.

Your Annual Notice of Change Is the Most Important Mail You'll Get

Every plan must deliver an Annual Notice of Change by September 30, so yours should already be in a drawer or an inbox. The document runs from a few pages to several dozen because it details exactly what changes on January 1, 2027: the monthly premium, the deductible, the tier each drug sits in, the coinsurance attached to that tier, the pharmacy network, and any new prior authorization or step therapy rule.

Read four sections first. Find the premium table and compare it with what you pay now. Find the formulary and look up every medication you take by its exact name and dose. Find the pharmacy directory and confirm your store is still preferred, since a move from preferred to standard can add $10 to $30 per fill. Find the utilization management section and note any drug that now needs approval before it is covered.

Tier shifts are where quiet money disappears. A blood thinner that sat in tier 3 with a $47 copay in 2026 can land in tier 4 with 40% coinsurance for 2027, and 40% of a $500 list price is $200 a fill. Nothing about the plan's name changed. If your notice never arrived, call the plan and ask for it in writing, then pull the same details from Medicare Plan Finder at medicare.gov, which posts next year's data each October.

The Part D Math: Caps, Deductibles, and the 2026 Price Cuts

Part D was rebuilt in 2025, and the 2026 plan year shows the shape of it. The annual out-of-pocket cap is $2,100, up from $2,000, and once you cross it you pay nothing more for covered Part D drugs that year. The maximum deductible a standalone plan can charge is $615. Insulin costs no more than $35 for a 30-day supply, and ACIP-recommended vaccines, including shingles and RSV, cost nothing.

Another 2026 change sits inside the price of the drugs themselves. The maximum fair prices negotiated under the Inflation Reduction Act for ten drugs took effect January 1, 2026, covering Eliquis, Xarelto, Jardiance, Januvia, Farxiga, Entresto, Enbrel, Stelara, Imbruvica, and NovoLog and Fiasp. People on those drugs saw 30-day costs fall, sometimes by hundreds of dollars. Your plan's negotiated price and tier still determine your copay, so check the formulary rather than assuming the federal price is what you pay.

Run a full-year estimate instead of a monthly one. Suppose you fill four generics at $12 each and one brand drug at $180 a month. That is $2,208 in copays before premiums, which puts you over the 2026 cap, so the honest worst-case number for the year is the cap plus premiums, not twelve times your January receipt. The Medicare Prescription Payment Plan spreads that exposure across the calendar in monthly installments. All Part D plans must offer it, and you have to ask to be enrolled.

Medicare Advantage in 2026: Networks, Prior Authorization, and Hospice

Medicare Advantage plans must cover everything Original Medicare covers, with hospice as the 2026 exception, plus extra benefits like dental, vision, and fitness. What varies is how you get that care. Networks are narrower than Original Medicare's, referrals may be required, and prior authorization can sit between your doctor's order and your treatment.

Plan year 2026 brought one structural change worth knowing. The hospice component of the Value-Based Insurance Design demonstration ended December 31, 2025, so enrollees in participating plans returned to the standard arrangement in which the Medicare hospice benefit is paid under Original Medicare Part A. If a family member in an Advantage plan enters hospice in 2026, the hospice team bills Medicare directly and the plan covers the rest of that person's care.

Check three things before you keep or choose an Advantage plan. Confirm your primary care doctor and every specialist is in network for 2027, not just for 2026. Confirm your hospital is in network, because hospitals leave plan networks quietly. Confirm each drug is on the formulary and whether it needs prior authorization. CMS also requires plans to notify enrollees mid-year about supplemental benefits they have not used, a useful reminder that unused dental or vision allowances do not roll over. Your plan's maximum out-of-pocket limit, the yearly ceiling on what you pay for Part A and Part B services, is printed in the notice and belongs in your comparison.

A $0 Premium Is a Price Tag, Not a Promise

A $0 premium plan can cost you more than a plan charging $60 a month. Copays, coinsurance, the deductible, and the network determine the real number, and the plan that wins on premium often loses on the drug you actually take.

Take two plans in the same county. Plan A charges $0 per month and puts your two brand drugs in tier 3 at 25% coinsurance. Plan B charges $58 per month and covers the same two drugs at a flat $40 each. If those brands have negotiated prices of $620 and $480, Plan A charges about $275 a month for them and Plan B charges $80. Over twelve months, Plan A costs roughly $3,300 in drug copays with no premium, while Plan B costs $696 in premium plus $960 in copays, about $1,656. The cheaper premium loses by more than $1,600.

The same logic applies to Advantage plans with richer extras. A grocery allowance worth $75 a quarter is $300 a year, and a $1,200 difference in specialist copays wipes it out. Medicare Plan Finder totals estimated yearly costs once you enter your drugs and pharmacy, and that total is the number to compare across plans. A low premium with a narrow network is a fine choice for a healthy year and an expensive one for a year with a hospital stay.

Six Mistakes That Show Up Every December

Six errors account for most of the regret that arrives in January. The first is staying in a plan because the premium did not change. A flat premium can hide a tier shift, a new deductible, or a pharmacy that dropped to standard cost sharing, and the Annual Notice of Change is the only place those moves are disclosed.

The second is filling prescriptions at a pharmacy outside the plan's network and finding out at the counter. The third is ignoring prior authorization until a doctor orders a drug the plan will not pay for without paperwork. The fourth is comparing premiums only, which the previous section prices out in dollars.

The fifth is missing December 7. There is no grace period and no automatic extension, and enrollment systems get heavy traffic in the final 72 hours. If you are already in an Advantage plan and miss the deadline, the Medicare Advantage Open Enrollment Period from January 1 to March 31, 2027 allows one change, either to a different Advantage plan or back to Original Medicare with a drug plan. That is one change, not a do-over, and it does nothing for anyone in a standalone Part D plan.

The sixth is dropping Part D without a replacement. Going 63 days or more without creditable drug coverage can trigger a late enrollment penalty of 1% of the national base beneficiary premium for every month you went uncovered, and that penalty stays with you as long as you hold a Part D plan.

How to Check Your Own Situation in One Afternoon

Set aside one afternoon and work in order. First, write down every prescription with the exact name, strength, and fills per month. Include insulin and its delivery device, and any over-the-counter item your plan might cover. Second, list your doctors, your hospital, and the pharmacy you actually use, then note a second pharmacy within walking distance, because networks change.

Third, go to medicare.gov and open Plan Finder. Enter your ZIP code, your drugs, your pharmacy, and your doctors, then rank plans by estimated yearly cost rather than premium. The tool shows each plan's star rating, which measures customer service and drug plan performance, and it flags drugs that are not covered or that require prior authorization. Print or save the comparison.

Fourth, verify by phone. Call the plan's member services line and ask two questions in plain words: is this drug covered on my 2027 plan, and is this doctor in network for 2027. Plan Finder data can lag a mid-year network change, and a five-minute call beats a January surprise. Record the representative's name and the date.

Fifth, check your income. If household income sits near 150% of the federal poverty level, run the Social Security Administration's Extra Help screening at ssa.gov. Extra Help lowers Part D premiums, deductibles, and copays, and the income limits are updated every year.

Special Situations That Change the Rules

Several groups face different rules. People with both Medicare and Medicaid, including dual eligible special needs plan members, have a special enrollment period that allows a change once per quarter, so December 7 is not their only door. People whose Advantage plan holds an overall five-star rating from CMS for 2027 can switch into it at any time during the year through the five-star special enrollment period, one change only.

People who move, lose employer coverage, or enter or leave a nursing home get a special enrollment period tied to the event, typically two months. If you are still working and your employer plan is primary, ask the benefits office whether that coverage is creditable for Part D before you change anything, because joining a Part D plan can end employer retiree coverage permanently.

Health savings accounts create a trap. Contributions to an HSA are allowed only while you have no Medicare enrollment. Enrolling in a Medicare Advantage plan, even one with no drug coverage, ends HSA contribution eligibility, and payroll deductions taken afterward can create a tax problem that costs more than any premium difference.

Finally, if you are under 65 on Social Security disability, the same AEP dates apply, but your state may offer few Medigap choices and a different Advantage menu. Check the plan's service area rather than assuming the plans your neighbor described are available where you live.

After You Enroll: What January Looks Like

Enrollment is not finished when you click submit. Most plans send an acknowledgment letter within about ten days, and a new member ID card should arrive before January 1, 2027. If the card has not appeared by the third week of December, call the plan and confirm the enrollment processed. Keep the confirmation number.

If you join a new Advantage plan, the plan notifies Medicare and you are disenrolled from the old one automatically. Standalone Part D works the same way. Two overlapping enrollments are rare, but paying two premiums for January is not, so call the plan that owes you a refund rather than assuming it will reverse itself.

Expect friction at the pharmacy counter in the first two weeks of January. The common causes are a card that was never activated, a prior authorization the doctor has not filed, and a Part D deductible that resets on January 1. That reset catches people who hit the 2026 cap in December and expect the same zero copay in January of 2027.

Medicare's help line, 1-800-MEDICARE, answers calls 24 hours a day, including weekends. The December 7 cutoff is 11:59 p.m. local time, and online enrollment at medicare.gov closes at the same moment.

Your Next Steps Before December 7, 2026

You have 25 days. A workable schedule looks like this. By November 20, gather the drug list, the doctor list, and both Annual Notices of Change if you are comparing alongside a spouse. By December 1, have your top two plans ranked by estimated yearly cost, with network and formulary confirmed by phone.

Leave the final week as a buffer for verification, not for shopping. Traffic on medicare.gov and the carrier call centers climbs sharply in the last days, and hold times of an hour are routine on December 6 and 7. If you plan to enroll by phone, call before December 3.

Write down three numbers for every plan you are considering: the monthly premium, the deductible, and the worst-case yearly cost if you fill every prescription at standard cost sharing. Those three numbers answer most of the question. Everything else, from the dental allowance to the gym membership, is a tiebreaker.

Then confirm the decision in writing. Save the enrollment confirmation, the plan's summary of benefits, and a note of the date you enrolled. If a dispute arises in February over a January claim, that paperwork is what resolves it, and rebuilding it later takes far longer than saving it now.

If the comparison still feels uncertain, talk with a licensed insurance agent before the December 7, 2026 deadline. An agent can pull the same plan data you can, confirm network and formulary details directly with the carriers, and walk through total yearly cost with your actual prescriptions in front of them. The conversation costs you nothing, and you still have 25 days to use it.

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Published 2026-11-12 12:17:00.486086+00:00