Medicare Advantage Premiums Are Falling to $12 a Month for 2027. Most Enrollees Will Never See It.

Irene's Annual Notice of Change letter came on a Tuesday in late September. She read the first line, the one that always says her premium isn't going up. She set the letter on the kitchen counter. It sat there for three weeks. She has done this every fall since she enrolled in her Medicare Advantage plan five years ago. The rest of its nineteen pages never seemed worth reading.

The Centers for Medicare & Medicaid Services (CMS), the federal agency that runs Medicare, announced on September 28, 2026, that the average Medicare Advantage premium nationwide is projected to fall to $12 a month for 2027. That's down from $14.37 in 2026, a drop of about 16.5%. Open enrollment, the six-week window when you can switch plans, opens October 15. It will be easy to read that $12 figure as the whole story. It isn't. The same year that national number is falling, insurers are cutting dental coverage, shrinking a cash-back perk called the Part B giveback, and narrowing the lists of doctors their plans cover. Whether Irene's own plan got better or worse this year has almost nothing to do with the $12 average. It has almost everything to do with whether she opens the rest of the letter.

How the average got to $12

CMS has published a projected average Medicare Advantage premium every fall since at least 2023. The number has gone down every single year: $18.23 for 2024, $16.40 for 2025, $14.37 for 2026, and now $12.00 for 2027. (The 2026 figure was revised up slightly from an original $14.00 estimate the year before.) Each figure is CMS's own projection at the time it's announced, based on the price plans insurers submit to the government that year. Each one gets measured against the real figure the following fall.

Four years of a falling average premium sounds like an industry getting cheaper for seniors. A more accurate description: insurers are getting pickier about which $12 plan they're willing to sell, not making every plan better. More than 99% of Medicare beneficiaries will have access to at least one Medicare Advantage plan in 2027, and 97% will have ten or more to choose from, according to CMS. Having a plan available at some premium isn't the same as having a plan that still covers your dentist, your specialist, or the $45-a-month check that used to show up folded into your Social Security deposit.

Why the number everyone compares keeps falling

Here's how it works, and it isn't complicated. CMS raised its base payment to Medicare Advantage insurers by an average of 2.48% for 2027, according to Reuters. Medical costs, and how much care people actually use, have both kept rising faster than that. Humana has said publicly that the 2.48% increase isn't enough, and that it will need to cut benefits to manage it.

Medicare Advantage insurers compete for enrollment mainly on one visible number: the monthly premium shown on Medicare's own comparison tool, right next to every other plan's. A plan that raises its premium loses enrollees to a competitor that didn't. A plan that quietly trims a dental allowance, or a Part B giveback, or the size of its doctor network, loses far fewer customers, because most people never get far enough into the comparison to notice. Insurers compete openly on the premium. They cut benefits quietly, where fewer people are watching.

What the average doesn't tell you

The research group Leerink Partners reviewed Medicare's own Plan Finder data for 2027 and found insurers broadly cutting supplemental benefits: smaller dental allowances, higher copays for specialist visits, and, repeatedly, smaller or eliminated Part B premium givebacks. UnitedHealthcare and Aetna have both said they'll offer more plans with tighter, smaller provider networks for 2027. None of that shows up in CMS's $12 average, which measures only the premium line, not what the plan still pays for.

The giveback is the clearest place to see what a falling average can hide. Medicare Part B is the part of Medicare that pays for doctor visits and outpatient care, and it normally charges its own monthly premium, deducted straight out of your Social Security check. Some Medicare Advantage plans refund part of that Part B premium as a perk, called a giveback, instead of lowering their own plan premium. KFF (the health-policy research group Kaiser Family Foundation) found that in 2025, over a third of enrollees in a plan with a giveback were getting $50 or more back a month, $600 or more a year. About half were getting less than $10 a month. If a plan drops a $50-a-month giveback for 2027, that enrollee loses about twenty times what the roughly $28-a-year national average premium drop is worth. The letter announcing it still opens with the same line Irene has read five years running: your premium isn't going up.

Most people never read past that line. About two-thirds of Medicare Advantage enrollees compared zero plans during a recent open enrollment period, according to KFF; among people still on traditional Medicare, the figure was closer to 7 in 10. A separate study from USC's Schaeffer Center looked only at people with a stand-alone Part D drug plan. It found 52% made no comparison at all before the 2024 plan year, and 41% of those said they didn't know how to switch. Researcher Erin Trish of the Schaeffer Center has described the pattern this way: a plan can price itself low to attract new enrollees, then raise its premium or trim its benefits in later years. The plan is counting on the fact that most people who signed up once will never go looking again.

A falling national average and a worse deal on your own plan aren't a contradiction. They're the same story: one told nationally, one told on your own plan.

The part CMS doesn't dispute

CMS isn't hiding any of this. Its own press materials for 2027 already note that more than 99% of beneficiaries will have access to at least one plan. The agency's administrator has specifically urged people to compare options during open enrollment rather than let a plan renew on its own. CMS's past premium projections have also moved after the fact: the number it announced for 2026 a year ago was $14.00, and the figure it now uses as the official 2026 baseline is $14.37. Even the headline average is a projection that gets revised later, not a locked-in fact about what anyone will actually pay. Here's what's actually true this year: the plans on offer cost a little less, on average. Whether the plan sitting in your mailbox is one of them is a separate question, and only the rest of that letter answers it.

What Irene did with the letter this year

Irene finally opened all nineteen pages three days before this piece went up. Page six said her plan's Part B giveback, $45 a month, $540 a year, was being discontinued for 2027. Page eleven said her dental allowance was dropping from $2,000 to $1,200. She logged into Medicare's Plan Finder, entered her zip code and her two regular doctors, and found a competing plan in her county that kept a $35 giveback and the same specialist she'd been seeing for three years. She's switching before December 7.

Sources

• Centers for Medicare & Medicaid Services, "Medicare Advantage and Medicare Prescription Drug Programs Expected to Remain Stable in 2027," September 28, 2026.
• CMS 2026 Medicare Advantage premium announcement, September 2025, as reported by Word & Brown.
• Reuters, on the 2.48% average 2027 payment increase to Medicare Advantage insurers and Humana's response, May 2026, as reported via Yahoo Finance's "Analysis-Medicare Advantage health plans may cut extra benefits in 2027."
• Leerink Partners analysis of Medicare Plan Finder data for 2027, as reported by Axios and Yahoo Finance, September 2026.
• KFF, "Most Medicare Beneficiaries Don't Shop Around for Coverage," and KFF 2025 data on Part B giveback amounts, as reported by WTOP.
• USC Schaeffer Center, Health Affairs Scholar study on Part D plan-shopping behavior for the 2024 plan year, as reported by Fierce Healthcare and Medical Economics.

Irene is a composite character; the CMS figures, the benefit-cut findings, and the plan-shopping research cited are real. Figures in this piece were verified on October 11, 2026, and CMS's 2027 numbers remain projections until final plan details are published. This article is educational information, not individualized financial or insurance advice.

Quick answers

Are Medicare Advantage premiums going down in 2027? On average, yes. CMS projects the average Medicare Advantage premium will fall to $12 a month for 2027, down from $14.37 in 2026, a 16.5% decline. That figure is a nationwide average across thousands of plans. Your own plan's premium, and what it actually covers, can move in the opposite direction.

Why are Medicare Advantage plans cutting benefits if premiums are falling? The government's payment to insurers is rising only 2.48% on average for 2027, while medical costs and care use keep climbing faster than that. Humana has said publicly that increase isn't enough and it will need to cut benefits. Insurers compete for enrollment on the number people compare side by side, the premium, so they keep that low and look for savings elsewhere: smaller dental allowances, smaller Part B premium givebacks, and narrower lists of doctors and hospitals.

What is the Medicare Part B giveback benefit? Some Medicare Advantage plans pay back part of your Part B premium as a perk. In 2025, about a quarter of Medicare Advantage plans offered one. KFF data from that year found over a third of enrollees with a giveback were getting $50 or more a month, worth $600 or more a year, while about half were getting less than $10 a month. If your plan drops or shrinks its giveback for 2027, that can cost you far more than the roughly $28-a-year national average premium drop is worth.

When does Medicare open enrollment start for 2027 coverage? October 15, 2026, through December 7, 2026. Coverage you choose during that window starts January 1, 2027. CMS and consumer researchers both recommend reading your plan's Annual Notice of Change letter and checking Medicare's Plan Finder tool rather than letting your current plan renew automatically.