The standard Medicare Part B premium is $185.00 per month in 2025, up roughly 6% from $174.70 last year.
For the tens of millions of Americans enrolled, that money never shows up in their bank account—it's pulled straight out of their Social Security check before it ever lands.
With the annual Social Security cost-of-living adjustment landing near 2.5%, many retirees are discovering the raise doesn't cover the higher premium.
That gap is the quiet squeeze nobody budgets for.
If your benefit rises by about $50 a month but your Part B premium jumps by roughly $10, the net gain shrinks fast.
Add a Medicare Advantage or Medigap plan on top and the math gets tighter still.
Since 2007, Medicare has charged an income-related monthly adjustment amount, or IRMAA, on top of the standard premium.
In 2025, individuals earning above $106,000 and couples above $212,000 pay anywhere from about $259 to $628 per month for Part B alone.
The thresholds are based on tax returns from two years prior, so a one-time spike in income—a home sale, a Roth conversion, a big capital gain—can trigger a surcharge that lingers for a full year.
There's a detail most people miss: IRMAA is appealable.
If your income dropped because of a life-changing event like retirement, divorce, or the death of a spouse, you can file Form SSA-44 and ask the Social Security Administration to use your current income instead.
Plenty of recently retired Americans are paying the surcharge simply because they haven't filed the paperwork.
Enrollment timing carries its own penalty.
Miss your initial window and you face a permanent late-enrollment surcharge of 10% for every 12 months you could have signed up but didn't.
That penalty rides along for as long as you have Part B.
It's one of the few costs in the system that never resets.
Not everyone pays the standard rate, either.
If you're still working and covered by an employer plan from a company with 20 or more employees, you may be able to delay Part B without penalty.
Retirees on a former employer's retiree coverage usually cannot—those plans typically require you to enroll.
The rules hinge on who pays first, and getting it wrong is expensive.
For households already stretched, a few practical moves help.
Review your plan every fall during open enrollment instead of auto-renewing.
Check whether a Medicare Savings Program in your state can cover the premium if income is modest.
And if you're near an IRMAA cliff, talk to a tax professional before year-end about whether timing a withdrawal differently keeps you under the line.
The bigger picture: Part B premiums have climbed far faster than the typical COLA over the past two decades, which means the program slowly consumes a larger share of each check.
That trend doesn't reverse on its own. **Our take:** The single highest-return hour a retiree can spend this year is checking whether they owe IRMAA—and filing Form SSA-44 if they do.
Most people assume the number Social Security calculated is final.
Final Thoughts
It often isn't, and the correction is free.