If you're on Medicare, the first thing you'll notice this year is a bigger bite out of your Social Security check.
The standard Part B premium rose to $185 per month in 2025, up about $10.30 from $174.70 in 2024.
That's roughly $2,220 a year for doctor visits, outpatient care, and preventive services — before you even touch a hospital bill.
The annual deductible climbed too, from $240 to $257.
And here's the part that catches people off guard: if you're a higher earner, you don't pay the standard rate.
That extra charge is called the income-related monthly adjustment amount, or IRMAA.
It kicks in once your modified adjusted gross income crosses $106,000 for a single filer or $212,000 for couples filing jointly.
At the top tier, the Part B premium can exceed $600 a month.
Social Security doesn't use your current income to set your premium — it uses your tax return from two years ago.
So your 2025 premium is based on your 2023 income.
If you sold a house, took a big distribution from an IRA, or had a one-time windfall that year, you could be paying an inflated premium right now even though your income has dropped.
There is a fix, but you have to ask for it.
If your income fell because of a life-changing event — retirement, divorce, death of a spouse, loss of a pension, or reduced work hours — you can file Form SSA-44 to request an adjustment.
Social Security won't do it automatically.
You have to initiate it, and you'll need documentation.
The Social Security Administration typically sends IRMAA determination letters in the fall, and you have 60 days from the date on that letter to appeal.
Miss the window and you're often stuck paying the higher amount for the full year.
One more thing worth checking: whether you're paying more than you should because of a late enrollment penalty.
If you didn't sign up for Part B when you were first eligible and didn't have qualifying coverage through an employer, that penalty adds 10% to your premium for every 12 months you waited — and it usually follows you for life.
People who kept working past 65 with job-based coverage can sometimes avoid the penalty, but only if that coverage was through an active employer and you filed the right paperwork.
It's one of the most common and costly mistakes among new retirees.
The practical move this month: pull up your latest Social Security statement or check your online account.
Confirm your actual Part B deduction, compare it against the 2025 standard, and if there's a gap, figure out why.
If it's IRMAA, decide whether an appeal is worth filing.
If it's a penalty, it may be too late to undo — but knowing the number helps you plan.
Medicare open enrollment for 2026 runs October 15 through December 7, which is a good window to also shop Part D drug plans and Medicare Advantage options.
Premiums aren't the only line item that shifts every year, and small changes in your prescriptions can swing your total costs by hundreds.
Our take: the annual Part B increase is easy to ignore because it's auto-deducted, and that's exactly why it keeps growing quietly.
Final Thoughts
Spend ten minutes checking your deduction against the standard rate — the people who catch an IRMAA error or an old penalty often save more than any coupon or cashback app will ever deliver.