Medicare Premiums and Deductibles in 2026 vs 2025: A Side-by-Side Comparison

A Medicare premium-and-deductible comparison refers to a side-by-side review of what each Medicare program component cost in the prior year versus the current year - giving beneficiaries a clear picture of what is actually changing in their monthly budget. In 2026, that comparison is more consequential than it has been in years.

According to CMS data, UnitedHealthcare - the nation's largest Medicare Advantage insurer - exited several major markets for 2026, part of a broader pattern of plan withdrawals that displaced roughly 2 million Medicare Advantage members nationwide. That is not just an insurance story. It is a budget story for people on fixed incomes who now need to find new coverage, often with less choice and higher baseline costs.

Three forces drove the 2026 cost picture. Part B premiums rose. Part D drug plan options collapsed. And Medicare Advantage plans trimmed the supplemental benefits - dental, vision, fitness - that many enrollees relied on to justify the switch from Original Medicare. Each shift compounds the others.

How Much Did Medicare Part B Go Up in 2026?

Part B rose from $185 to $202.90 per month - a $17.90 increase that outpaced the Social Security COLA by more than three to one.

A common misconception is that the Social Security cost-of-living adjustment covers Medicare premium increases. The reality is that the 2026 COLA of 2.8% adds roughly $56 per month to the average retiree's check, but Part B alone takes back $17.90 of that gain. The Part B deductible went from $257 to $283 annually, a 10.1% jump. After just these two line items, you've already absorbed nearly a third of your COLA increase before paying for food, rent, or utilities., as of June 2026.

An analysis of 16 Medicare cost sources shows that the 9.7% Part B premium increase is more than three times the 2.8% Social Security COLA, creating what patient advocates call a structural squeeze on fixed-income beneficiaries.

Here is the thing: most news coverage focuses on Part B because it hits the biggest population. But Part A deductibles, Part D formulary changes, and the collapse of Part D carriers are where beneficiaries get blindsided in ways that don't show up on their Social Security statement.

Use the COMPARE Method (Collect your ANOC, Make a list of your current costs, Pull your 2026 premium notice, Assess each Part separately, Review drug coverage, and Evaluate in-network providers) when your Annual Notice of Change arrives each September. This gives you a complete picture before the October 15 enrollment window opens.

Part B is mandatory for most Medicare enrollees. You cannot opt out of it if you want to keep your Social Security benefits. That means every single person receiving a Social Security check is paying $202.90 per month for Part B in 2026 - automatically deducted before the check hits your account.

Higher earners pay more. IRMAA surcharges kick in for individuals with modified adjusted gross income above $109,000. At the highest income tier, the surcharge adds $487 per month on top of the standard premium. If you had a one-time income event two years ago - a home sale, an inheritance, a required minimum distribution - you may be paying an IRMAA surcharge this year based on income you no longer have. You can appeal this through CMS.

How Did Part D Drug Plans and Medigap Premiums Change in 2026?

In short: How Did Part D Drug Plans and Medigap Premiums Change in 2026?: Part D and Medigap changes hit some beneficiaries harder than the Part B increase.

Part D and Medigap changes hit some beneficiaries harder than the Part B increase - but because they come from private insurers, they don't show up on your Social Security notice.

Most guides recommend watching the CMS national average Part D premium, which actually fell from $38.31 to $34.50 per month in 2026. The reality is that individual plan increases were far more extreme. One beneficiary posted receiving a notice that their Cigna Part D plan was going from $41.60 to $91.60 per month - a $50 jump, the maximum CMS now allows insurers to raise premiums in a single year. Other Cigna enrollees saw increases from $12.60 to $62.60 per month - nearly a fivefold increase. AARP/UnitedHealthcare Part D went from $89.20 to $114.80 per month. The average obscures real pain for specific plan holders.

According to the 2026 Medicare Plans analysis, approximately 2 million Medicare Advantage members will have their plans eliminated for 2026. UnitedHealthcare alone is cutting plans that affect 600,000 people. An 86% decline in Part D carriers - from 50 companies in 2007 to roughly 5 or 6 today - means less competition and less reason for insurers to hold premiums down.

The in-practice takeaway: if your Part D plan sent you a notice, shop before December 7. The right plan for your specific medications may be cheaper than what you're paying now.

Medigap is a separate story. According to a 247 Wall Street analysis of Plan G, this supplement covers Part B coinsurance and the Part A hospital deductible after you pay the $283 annual Part B deductible. "A friendly broker just told you that you can get a Medicare Advantage plan for about $14 a month" - that pitch is common, but Plan G offers something a $14 Advantage plan cannot: access to any Medicare-accepting provider in the country without a prior authorization.

In community forums, Medigap Plan G premiums in some community-rated states have been rising sharply. One beneficiary in South Carolina watched Plan G approach $500 per month in 2026, up $80 from the prior year alone. North Carolina, which uses issue-age rating, offered the same coverage for $141 per month for a 65-year-old. Same federal product. Completely different state market outcomes.

The max annual premium increase allowed is now $50 per month - up from $35 in 2025. That ceiling change alone signals that CMS expects pressure to continue. If you ignored your Annual Notice of Change envelope, you may be paying substantially more for the same coverage another plan offers at a lower cost.

How Do You Compare Your 2025 Plan to Your 2026 Plan and Know If It Still Makes Sense?

Log in to medicare.gov/plan-compare, enter your medications and pharmacy, and the tool will show you a true side-by-side cost estimate for every plan available in your zip code.

Most beneficiaries skip this step every year. One Medicare enrollee described it clearly: "Most folks just stick with what they have, not realizing that what they are getting might be changing considerably from one year to the next." That passivity is expensive. Medicare Advantage and Part D plan benefits, cost-sharing, and formularies reset each January 1. The plan that was best for you in 2025 may not be best in 2026.

According to the Aging in America Medicare analysis, plan choices for 2026 are "unusually complicated" because some private Medicare Advantage and Part D insurers are deemphasizing or even pulling out of certain geographic markets. The takeaway: even checking your current plan's Annual Notice of Change may not be enough - your plan may technically continue while dramatically cutting its benefits.

According to a Medicare pitfalls podcast analysis, Medicare Advantage plans in 2026 are "going back to basics" - scaling back supplemental benefits like dental coverage, hearing aids, and vision allowances that many enrollees counted on. One insurer cut a $1,000 annual dental maximum down to preventive care only. If your budget included these benefits, they may no longer be there.

Here is a practical 5-step plan comparison process:

1. Find your Annual Notice of Change. It arrived in September. If you discarded it, log in to your plan's member portal and download the 2026 plan documents.
2. List every medication you take along with the pharmacy you use. Include dose and quantity.
3. Go to medicare.gov/plan-compare and enter your drug list. The tool calculates your estimated annual drug cost for every plan in your area.
4. Check your doctors and facilities. Call each provider's office and ask if they accept your specific plan for 2026 - not just "Medicare," your specific plan.
5. Look at total annual cost, not just monthly premium. A plan with a $0 monthly premium may cost more in deductibles, copays, and out-of-pocket maximums than a plan charging $40 per month.

Real-world cost transitions can be startling. One family discovered their parents' healthcare costs were about to jump from $49.31 per month to over $400 per month when they turned 65 - not because Medicare is expensive by insurance standards, but because they had been receiving extraordinary ACA subsidies that expire at Medicare age. The average Medicare beneficiary pays roughly $6,500 per year out of pocket - far more than most people expect going in.

If you need help running this comparison, the UnderstoodCare team walks Medicare patients through this process at no charge. Call us at 646-904-4027. We review your current plan, run your drug list, and help you understand exactly what changed and whether a different plan would save you money in 2026.

What Will Medicare Costs Look Like Over the Next 12 to 24 Months?

In short: What Will Medicare Costs Look Like Over the Next 12 to 24 Months?: The structural gap between Part B premium growth and Social Security COLA will.

The structural gap between Part B premium growth and Social Security COLA will compound - meaning each year this pattern holds, beneficiaries on fixed incomes have less real purchasing power available for everything outside of Medicare.

Three signals point to what matters most heading into 2027 and 2028.

The contrarian view: the 2026 disruption may have been the market correcting itself rather than breaking. The plans that exited were chronically unprofitable. The ones that remain are more financially stable. If that reading is correct, 2027 could bring more plan stability - not less - for beneficiaries who stay in MA. What most people miss is that the beneficiary experience of 2026 depended almost entirely on which state they lived in and which drugs they take. National averages tell a misleading story.

What Should You Do Now That You Have Seen the 2025 vs 2026 Numbers?

The most important next step is to run your actual drug list through the plan comparison tool - not guess based on last year's costs.

The 2026 Medicare numbers signal a structural shift in how the program works, not just a routine annual adjustment. When Part B premiums rise 9.7% against a 2.8% COLA, that gap does not close the following year - it compounds. When Part D carriers drop from 50 to roughly 6 nationwide, that market contraction does not reverse quickly. These are not temporary disruptions. They are the new baseline.

Here is the thing: the beneficiaries who get hurt most by these changes are not the ones who make the wrong choice. They are the ones who make no choice - who stay on an auto-renewed plan without checking whether it still makes sense. If your plan was eliminated, you were moved somewhere. That somewhere may not be the right fit.

Review your plan. Check your drug costs. If the numbers do not work, call 646-904-4027 to talk through your options with a patient advocate who can walk through the comparison with you.