American retirees opened their January mail to find a number many weren't expecting.
The standard Medicare Part B premium rose to $202.90 per month in 2026, up from $185.00 last year—about a 9.7% increase, outpacing both headline inflation and the Social Security cost-of-living adjustment that was supposed to soften the blow.
For most beneficiaries, that higher premium gets deducted straight from their Social Security check before it ever hits the bank account.
So even a decent COLA can feel like a pay cut when the Part B line item swallows a chunk of it.
This year, the math is especially tight: the 2025 COLA came in at 2.5%, while Part B premiums climbed nearly four times faster.
Medicare officials point to rising costs for outpatient care, physician services, and newer drugs administered in clinical settings.
Part B also covers things like durable medical equipment, some home health services, and certain preventive screenings.
When utilization goes up and treatments get pricier, the premium follows.
Since 2007, Medicare has used income-related monthly adjustment amounts, or IRMAA, to charge wealthier beneficiaries more.
In 2026, single filers earning above $106,000 and joint filers above $212,000 pay surcharges that can push the monthly Part B cost past $600.
The thresholds are based on tax returns from two years prior, so a one-time spike in income—say, from selling a house—can trigger a surcharge long after the money is spent.
There's a silver lining for some households.
Because Social Security benefits typically rise with the COLA, many retirees see their net checks stay flat rather than shrink outright.
But "flat" still means losing ground against grocery bills, rent, and prescription costs that keep climbing.
If you're still working and covered by an employer plan, you may be able to delay Part B enrollment without penalty—but you have to follow the rules carefully, or you'll owe a permanent late-enrollment surcharge.
If you're already enrolled, check whether your Medicare Advantage or Medigap plan is still the best fit for your needs; plans change their networks and formularies every year during open enrollment.
Also worth a call: your state's Medicare Savings Program.
Several states help low-income beneficiaries cover Part B premiums, and millions who qualify never apply.
The thresholds are higher than many people assume.
Finally, don't ignore the IRMAA appeal process.
If your income dropped because of a life-changing event—retirement, divorce, death of a spouse—you can ask Social Security to reconsider your surcharge using more recent information.
It won't happen automatically, and it takes paperwork, but it can save real money.
The bottom line: Part B premium hikes are now a recurring budget item, not a one-off surprise, and they're quietly eroding the value of every COLA.
Final Thoughts
Retirees who treat Medicare costs as fixed and untouchable are leaving money on the table—reviewing plans, checking savings programs, and appealing IRMAA surcharges is now basic household financial hygiene, not an edge case.