The letter arrives every fall, and every fall it says the same thing: your Medicare Part B premium is going up again.
For 2025, the standard monthly premium sits at $185.00, up about $10.30 from $174.70 in 2024.
That's roughly a 5.9% jump, and for retirees on fixed incomes, it lands harder than the headline number suggests.
Part B covers doctor visits, outpatient care, and preventive services.
Unlike Part A, which most people get free after paying Medicare taxes for at least 10 years, Part B isn't free.
Most enrollees also pay an annual deductible, which rose to $257 in 2025, plus 20% coinsurance on most covered services after that.
Here's the part that catches people off guard: the premium is usually deducted straight from your Social Security check before it ever hits your bank account.
So when the annual cost-of-living adjustment gets announced, many retirees do the math and realize the raise gets partly or fully swallowed by the higher Part B premium.
A 2.5% COLA on a $1,800 monthly benefit adds about $45.
A $10.30 premium increase takes back roughly a quarter of that before anything else changes.
If your modified adjusted gross income from two years prior crosses certain thresholds, you're charged an income-related monthly adjustment amount, or IRMAA.
In 2025, single filers above $106,000 and joint filers above $212,000 start paying surcharges that climb in tiers.
The top tier pushes the Part B premium past $600 a month.
Because IRMAA looks back two years, a one-time spike like selling a house or taking a large IRA withdrawal can raise your premium even after your income drops.
If you've had a life-changing event like retirement, divorce, or the death of a spouse, you can ask Social Security to reconsider your IRMAA using more recent income.
The form is SSA-44, and it's worth filing if your situation has genuinely changed.
Separately, if your income is limited, state Medicare Savings Programs can cover Part B premiums, and Extra Help can reduce prescription drug costs.
The bigger planning point: Medicare premiums rise most years, and they compound.
Someone turning 65 in 2025 could easily pay well over $2,000 annually for Part B alone across their retirement, before supplements, Part D, or Medicare Advantage costs enter the picture.
Budgeting for that trajectory beats being surprised by it every November.
If you're still working and saving, treating healthcare premiums as a line item that grows faster than general inflation is the safer assumption.
Our take: the annual premium hike isn't a scandal, but it's also not something to ignore until the deduction shows up.
Check your notice each fall, compare it against your actual income, and file for reconsideration when you qualify.
Final Thoughts
A few minutes with the SSA-44 or a call to your state's SHIP office can keep real money in your pocket.