Medicare Part D

Shawnee Medicare Premiums & IRMAA for 2027

SHAWNEE, Okla. — If your paycheck or retirement income has climbed in recent years, your Medicare bill in 2027 may look different than your neighbor's. That's because Medicare Part B and Part D premiums are tied to what you reported on your tax return — and the income thresholds that trigger higher premiums are set each fall. With the Annual Enrollment Period running now through Dec. 7, it's a good time for Shawnee-area retirees to understand where they fall.

What IRMAA is, in plain English

IRMAA stands for the Income-Related Monthly Adjustment Amount. It's an extra charge added to your standard Part B and Part D premiums if your income is above a certain level. Most people don't pay it — Social Security estimates only a small share of enrollees earn enough to trigger it — but for those who do, it can add up quickly.

The key thing to remember: IRMAA isn't a penalty for doing something wrong. It's simply a sliding scale that asks higher earners to pay more toward their coverage.

The income thresholds for 2027

For 2026, IRMAA surcharges begin above these income levels, based on your 2024 tax return:

• Single filer: more than $109,000
• Married filing jointly: more than $218,000
• Married filing separately: a much lower threshold applies

From there, the surcharges climb through several income brackets. The highest bracket kicks in for singles with income above roughly $500,000 and couples above $750,000. Both your Part B premium and your Part D premium are affected — even if you get Part D through a stand-alone plan or a Medicare Advantage plan that includes drug coverage.

For the exact bracket-by-bracket amounts once CMS releases them, check Medicare.gov's page on Part B costs, which is updated each year.

Why your 2025 tax return matters now

Social Security uses your modified adjusted gross income (MAGI) from two years back to set your current year's premium. So your 2027 premium will be based on the return you filed in spring 2026 for tax year 2025.

That two-year lag catches many new retirees off guard. If you were still working full-time in 2025 and retired in 2026, your 2027 premium may look higher than your actual retirement income warrants.

What to do if your income dropped

If you've had a "life-changing event" — retirement, the death of a spouse, divorce, loss of pension income, or a work stoppage — you can ask Social Security to recalculate your IRMAA using Form SSA-44. You'll need documentation, such as a letter from your former employer or a copy of a more recent tax return.

This is one of the most overlooked steps for newly retired folks. If it applies to you, don't wait — the sooner you file, the sooner the adjustment can take effect.

How this fits into the bigger 2027 picture

IRMAA is only one piece of what's changing next year. Part D has a $2,400 annual out-of-pocket cap on covered prescriptions in 2027, and the maximum Part D deductible any plan can charge is $700 in 2027. The old coverage gap, or "donut hole," is gone — replaced by three simpler phases. And the Medicare Prescription Payment Plan lets you spread your drug costs across the calendar year in monthly installments instead of paying big lump sums at the pharmacy.

Shawnee is in Pottawatomie County, where several Medicare Advantage and stand-alone Part D plans are offered. Availability is set at the county level, so options here mirror what's on Medicare.gov's Plan Finder for the county — not the city alone.

Where Shawnee residents can get help

For personalized answers, three trusted resources stand out:

• Medicare.gov — official plan and cost information, updated for 2027.
• 1-800-MEDICARE — available 24/7.
• Oklahoma's SHIP program (Senior Health Insurance Counseling Program), run through the Oklahoma Insurance Department — free, unbiased one-on-one counseling.

The Annual Enrollment Period runs through Dec. 7, and the Medicare Advantage Open Enrollment Period follows from Jan. 1 through March 31 for those already in an Advantage plan.