The standard Medicare Part B premium landed at $185.00 per month in 2025, up roughly $10.30 from $174.70 last year.
For a couple both enrolled, that's nearly $4,440 a year deducted straight from Social Security checks before a single grocery bill gets paid.
The annual deductible climbed too, hitting $257, and once you're past it you're still on the hook for 20% of most covered services with no cap.
That last detail is the one financial planners keep flagging to clients who assume Medicare works like the employer coverage they had for decades.
Single filers above $106,000 and joint filers above $212,000 pay an income-related monthly adjustment amount, or IRMAA, layered on top of the base premium.
At the top tier, Part B alone runs $628.90 per month in 2025 — more than triple the standard rate.
The sting is that IRMAA runs on a two-year lookback.
Your 2025 premium was calculated from your 2023 tax return, which means a one-time Roth conversion, a property sale, or a big bonus can quietly raise your Medicare costs two years later.
Retirement experts say this catches people off guard more than almost any other Medicare rule.
If your income dropped because of a life-changing event — retirement, divorce, death of a spouse, or loss of a pension — you can file Form SSA-44 and request that Social Security use your current income instead.
Advocates say far too few people bother, mostly because they don't know the form exists.
For budgeting, the practical move is to treat the premium as a fixed line item, not a surprise.
Part B comes out of Social Security automatically for most enrollees, so the real number to watch is your net deposit.
A retiree collecting $1,900 a month sees closer to $1,715 after the standard premium — before Medicare Advantage, Medigap, or Part D drug plan costs stack on top.
Open enrollment for Medicare Advantage and Part D runs October 15 through December 7, and it's the window where switching plans can offset premium pain.
A plan that looked cheap two years ago may have quietly raised copays, and the only way to know is to compare the annual notice of change mailing against current options.
One more watch item: the Part B premium has historically grown faster than the Social Security cost-of-living adjustment in several recent years.
When that happens, retirees technically get a raise and still take home less.
Checking both numbers side by side each fall is the simplest defense. **Our take:** The Part B premium isn't going down, and treating it as an afterthought is how retirement budgets spring leaks.
Final Thoughts
Know your IRMAA tier, keep Form SSA-44 in your back pocket, and compare plans every fall — that trio does more for your bottom line than any single investment tweak.