Medicare 2026

Miss Part B by a Month? The Penalty Follows You for Life

Miss Part B by a Month? The Penalty Follows You for Life — plain-language Medicare information for Franklin, Tennessee.

FRANKLIN, Tenn. — Turning 65 in Middle Tennessee comes with a stack of mail, a birthday card from the Social Security Administration, and a decision most people only get to make once without consequence. Sign up for Medicare Part B and Part D on time, and you pay the standard rates. Miss your window without a good reason, and the federal government can tack a penalty onto your premium every single month — for as long as you have Medicare.

That is not a scare tactic. It is how the rules are written. The good news for Franklin residents: the deadlines are predictable, and there is free local help to keep you on the right side of them.

The one deadline almost everyone shares

Most people’s first Medicare deadline is their Initial Enrollment Period (IEP). It runs for seven months: the three months before the month you turn 65, your birthday month, and the three months after. If you sign up during that window, no penalties apply.

If you miss it and do not have qualifying coverage from another source, you may have to wait for the General Enrollment Period (January 1 – March 31) to sign up for Part B, and a penalty may follow.

How the Part B penalty works

The Part B late-enrollment penalty is 10% of the standard Part B premium for each full 12-month period you could have had Part B but didn’t. That amount is added to your monthly premium — and in most cases, you pay it for the rest of the time you have Part B.

Example: If you waited three full years to enroll without other qualifying coverage, your Part B premium would be 30% higher than the standard rate, every month, going forward.

How the Part D penalty works

Part D is the prescription drug side of Medicare, and it has its own penalty. If you go 63 days or more in a row without Part D or “creditable” drug coverage (drug coverage at least as good as Medicare’s standard) after your IEP, you can be charged a late-enrollment penalty when you eventually sign up.

The math: 1% of the “national base beneficiary premium” multiplied by the number of full months you were uncovered. That amount is rounded to the nearest 10 cents and added to your Part D premium every month, for as long as you have Part D.

This matters even if you take no prescriptions today. Many people put off Part D because they feel healthy, then face a permanent surcharge years later when they finally need coverage.

When you can delay without a penalty

Not everyone has to enroll at 65. You may qualify for a Special Enrollment Period (SEP) if you are covered by:

• A current employer’s group health plan (yours or your spouse’s), based on active employment.
• Certain other creditable coverage for drugs (for the Part D penalty).

If you keep working past 65 and have employer coverage, ask your HR office two questions in writing: Is this coverage “creditable” for Part D? And how long will I have to enroll in Medicare after it ends? Generally, you get an 8-month SEP for Part B after employer coverage ends, and a 63-day window to pick up Part D without penalty.

COBRA and retiree coverage do NOT count as active employer coverage for Part B purposes. That is one of the most common — and most expensive — misunderstandings we see.

What Franklin residents can do right now

Franklin is in Williamson County, where a range of Medicare Advantage and stand-alone Part D plans are offered each year. If you are approaching 65, or helping a parent who is, here is a simple checklist:

1. Mark your IEP on the calendar (the 7 months around your 65th birthday). 2. If you plan to keep working, confirm in writing whether your employer coverage is creditable. 3. Enroll in Part A at 65 in almost every case — it is usually premium-free. 4. Compare Part D or Medicare Advantage options during the Annual Enrollment Period (October 15 – December 7) each year. 5. Keep every letter you get about “creditable coverage.” You may need it years later to prove you should not owe a Part D penalty.

Program facts worth knowing for 2027

A few numbers to keep in mind as you plan:

• Part D out-of-pocket cap: $2,100 in 2026 and $2,400 in 2027.
• Part D maximum deductible: $615.
• The old coverage gap (“donut hole”) is gone; Part D now has three phases.
• The Medicare Prescription Payment Plan lets you spread drug costs across the year in monthly installments.
• IRMAA (income-related premium surcharges) start above $109,000 for a single filer in 2026.

None of these change the penalty rules, but they are the backdrop your enrollment decisions sit against.