If you're on Medicare, you've probably noticed that your monthly Social Security check doesn't stretch quite as far as it used to.
A big reason is the Part B premium, which covers doctor visits, outpatient care, and preventive services.
For 2025, the standard monthly premium is $185.00, up from $174.70 in 2024.
That's roughly a $10 jump per month, or about $123 more over the year.
The math gets painful fast because that premium usually comes straight out of your Social Security payment before the money ever hits your bank account.
So even when you get a cost-of-living adjustment, a chunk of it can quietly disappear.
This year's COLA was 2.5%, and for many retirees the Part B increase swallowed a noticeable slice of it.
If your modified adjusted gross income tops certain thresholds, you're hit with an Income-Related Monthly Adjustment Amount, or IRMAA.
That can push the Part B premium from $185 up to $628.90 per month for the highest earners.
The income brackets are based on your tax return from two years ago, so a one-time bump in income, like selling a house or taking a large withdrawal, can raise your premium later even if your income has since dropped.
There's a silver lining, though a small one.
The Part B deductible for 2025 is $257, up just $17 from last year.
And many Medicare Advantage and Medigap plans still help cover some of what original Medicare doesn't.
If you're healthy and rarely see doctors, a Medicare Advantage plan with a low premium might look tempting, but check the network rules and out-of-pocket caps before switching.
What can you actually do about the premium?
First, if your income has dropped because of a life-changing event like retirement, divorce, or the death of a spouse, you can ask Social Security to reconsider your IRMAA.
Second, review your plan every fall during open enrollment, which runs from October 15 to December 7.
Plans change their costs and coverage every year, and sticking with the same one out of habit can cost you.
Third, look at your total health spending, not just the premium.
A plan with a $0 premium can still sting if you pay 20% coinsurance on a big hospital bill.
Run the numbers on your actual prescriptions and expected visits before you decide.
Finally, keep an eye on your notice from Social Security.
If the Part B amount deducted from your check looks wrong, call 1-800-772-1213 and ask for a breakdown.
Mistakes do happen, and catching one early can save you real money.
The bottom line: Part B premiums are rising faster than many retirement budgets can comfortably absorb, and the automatic deduction makes it easy to miss.
Take thirty minutes this fall to review your coverage and your income paperwork.
Final Thoughts
A little homework now can keep more of your check in your pocket next year.