Medicare 2026

Why Medicare Part B and Part D penalties last for life, Lake Charles

# Medicare late-enrollment penalties: how they work and how to avoid…

LAKE CHARLES, La. — Missing a Medicare deadline can cost you for the rest of your life. That is the part most people do not realize until the bill shows up. The late-enrollment penalties for Part B (medical insurance) and Part D (prescription drug coverage) are not one-time fees. They get added to your monthly premium and, in most cases, stay there as long as you have Medicare.

The good news: these penalties are avoidable if you know the rules. Here is how they work, when they kick in, and the simple steps that keep you in the clear.

How the Part B late penalty works

Part B covers doctor visits, outpatient care, and many preventive services. Most people become eligible at age 65 and have a seven-month Initial Enrollment Period — the three months before the month they turn 65, the birthday month itself, and the three months after.

If you do not sign up during that window and you do not have other qualifying coverage, Medicare can add 10% to your Part B premium for every full 12-month period you could have had it but did not. That surcharge sticks with you for as long as you have Part B, according to CMS.

Example: If you waited three full years past your eligibility, your Part B premium could be 30% higher — every month, for life.

How the Part D late penalty works

Part D covers prescription drugs. The penalty here is calculated a little differently. Medicare takes 1% of the “national base beneficiary premium” and multiplies it by the number of full months you went without Part D or other creditable drug coverage after your Initial Enrollment Period ended.

That amount is rounded to the nearest 10 cents and added to your monthly Part D premium. Like the Part B penalty, it generally lasts as long as you have drug coverage.

Because the national base premium can change each year, your penalty amount can shift slightly year to year.

What “creditable coverage” means — and why it matters

You can delay Part B or Part D without a penalty if you have other coverage Medicare considers “creditable.” Common examples include:

• Group health coverage from your (or your spouse’s) current job.
• Certain union or retiree plans.
• TRICARE or VA drug coverage (for Part D purposes).

Your plan should send a notice each year telling you whether the coverage is creditable. Keep those notices. When it is time to enroll in Medicare, they are the proof that protects you from a penalty.

If you lose that coverage, you generally have a Special Enrollment Period to sign up for Medicare without any late fee — but the clock is short, so act fast.

What if you already missed your window?

If you missed your Initial Enrollment Period and do not qualify for a Special Enrollment Period, you can still get coverage:

• Part B: The General Enrollment Period runs Jan. 1 – March 31 each year, with coverage starting the month after you enroll.
• Part D: You can join a drug plan during the Annual Enrollment Period, Oct. 15 – Dec. 7, with coverage starting Jan. 1.

You may still owe a late penalty, but getting enrolled stops the meter from running any higher.

A note on local availability

Lake Charles is in Calcasieu Parish, where a range of stand-alone Part D drug plans and Medicare Advantage plans with drug coverage are offered each year. The number of plans and carriers can change from year to year, so it is worth checking the Medicare Plan Finder at medicare.gov during the fall Annual Enrollment Period, even if you are happy with what you have.

For 2026, a few program-wide figures are worth knowing as you compare options:

• The Part D out-of-pocket cap is $2,100.
• The maximum Part D deductible is $615.
• The old coverage gap (“donut hole”) is gone, replaced by a simpler three-phase structure.
• The Medicare Prescription Payment Plan lets you spread drug costs across the year in monthly payments instead of paying the full amount at the pharmacy.
• Income-related surcharges (IRMAA) generally begin above $109,000 in income for a single filer in 2026.

Where to get personal help

Penalties are frustrating, but they are also one of the most preventable parts of Medicare. If you are close to 65, retiring, or losing job-based coverage, do not guess — get personal guidance before your window closes.

• Visit medicare.gov to check enrollment dates and compare plans.
• Call 1-800-MEDICARE (1-800-633-4227), available 24/7.
• Contact Louisiana SHIIP, the state’s free State Health Insurance Assistance Program, for one-on-one, unbiased counseling.