Medicare Late Enrollment Penalties: What They Cost and How to Avoid Them

By Austin Tyler · Tyler Insurance Group · Updated August 2026

 

Frank retired at 65 feeling great. No prescriptions, no doctors he cared to see, and a premium bill he did not care to pay, so he skipped Part B and told his wife he would “sign up when I need it.” Three years later a heart scare changed his mind. Medicare took him back, as it always does. It also handed him a bill that will never go away: a 30% surcharge on his Part B premium, about $60.87 extra every month at 2026 rates, roughly $730 a year, for the rest of his life. Frank's story is a composite of calls our team takes every single month, and it is the reason this article exists.

 

The short answer

Medicare charges lifetime penalties for enrolling late without qualifying coverage. Part B: 10% added to your premium for every 12-month period you delayed. Part D: 1% of the national base premium ($38.99 in 2026) for every month you went without drug coverage. Both usually last for life. You avoid them by enrolling during your 7-month window around turning 65, or by keeping “creditable” coverage from a current employer and enrolling cleanly within the special window when it ends.

 

The two penalties, side by side

Medicare's premiums work because healthy people join on time rather than waiting until they are sick. The penalties exist to keep that bargain fair, and each one has its own math.

 

Part B: 10% for every year you waited, forever

Skip Part B without creditable employer coverage and the penalty is 10% of the premium for each full 12-month period of delay, payable for as long as you have Part B. Because it is a percentage of a premium that rises most years ($202.90 standard in 2026), the dollar amount grows with time. Frank's three-year delay became 30%; a five-year delay becomes 50%.

 

Part D: 1% per month, even if you take no medications

The drug penalty is sneakier because it accrues while you feel fine. It is 1% of the national base premium for every month without Part D or other creditable drug coverage, added to your drug plan bill permanently. On the 2026 base of $38.99, going 26 months uncovered adds about $10.10 a month for life. This is exactly why healthy people enroll in a low-cost drug plan on time: the plan is cheap, and the penalty meter never starts.

 

And a quiet third: Part A, for some

Most people get Part A premium-free and never meet its penalty. But if you have to buy Part A and enroll late, a 10% surcharge applies for twice the number of years you delayed. If you are told you do not qualify for premium-free Part A, get help before deciding anything.

 

The coverage that protects you (and the coverage that does not)

What counts as creditable

Group health coverage from a current employer with 20 or more employees protects you on Part B, and drug coverage that your employer or union certifies as “creditable” protects you on Part D. Those annual creditable-coverage notices are your proof; keep them. When the employment ends, a Special Enrollment Period gives you 8 months to add Part B and 63 days to line up drug coverage, penalty-free.

 

The expensive misconceptions: COBRA, retiree plans, and VA

Here is where good people get hurt. COBRA is not current employer coverage, so it does not protect you from the Part B penalty, and neither does retiree coverage or VA health care. People coast on COBRA for 18 months, then learn the penalty clock was running the whole time. One nuance worth knowing: VA drug coverage does count as creditable for Part D, even though VA coverage does not protect your Part B timing.

 

If the penalty already found you

Three moves are worth checking before you accept the bill as fate. First, appeal: if you actually had creditable coverage during the months in question, request a reconsideration with your proof. Second, Extra Help: people who qualify for the Part D low-income subsidy do not pay the Part D penalty at all. Third, stop the meter: every additional month of delay adds to the math, so enrolling now is always the cheapest remaining option.

 

Worked examples and the exemption checklist: our local Kentucky team keeps a detailed penalty guide with 2026 dollar examples at their Medicare late enrollment penalties guide (https://bluegrassmedicarehelp.com/articles/medicare-late-enrollment-penalties/). The rules it explains are federal and apply in every state.

 

Quick recap

• The Part B penalty is 10% per full 12-month period of delay, added for life ($202.90 standard premium in 2026, so a 3-year delay costs about $60.87 extra monthly).
• The Part D penalty is 1% of the $38.99 national base premium per uncovered month, also usually for life, even for people taking no medications.
• Creditable coverage from a current employer stops the clock; COBRA, retiree coverage, and VA coverage do not protect your Part B timing (VA drug coverage does count for Part D).
• When employer coverage ends you get 8 months for Part B and 63 days for drug coverage, penalty-free.
• Already penalized? Appeal with proof, check Extra Help eligibility, and enroll now to stop the meter.

Frequently asked questions

How much is the Medicare Part B late enrollment penalty?

It is 10% of the Part B premium for each full 12-month period you could have had Part B but did not enroll, without creditable employer coverage. On the 2026 standard premium of $202.90, each year of delay adds about $20.29 a month, and the penalty lasts as long as you have Part B, which for most people means for life.

 

How is the Part D late enrollment penalty calculated?

It is 1% of the national base beneficiary premium ($38.99 in 2026) for each full month you went without Part D or other creditable drug coverage after becoming eligible, rounded to the nearest 10 cents and added to your drug plan premium. It generally lasts for as long as you have Medicare drug coverage.

 

Does COBRA count as creditable coverage for Medicare Part B?

No. COBRA is not considered current employer coverage, so it does not give you a Special Enrollment Period or protect you from the Part B late enrollment penalty. Retiree coverage and VA health benefits also do not protect your Part B timing, though VA drug coverage does count as creditable for Part D.

 

Can a Medicare late enrollment penalty be removed?

Sometimes. You can request a reconsideration if you believe the penalty was assessed in error, especially if you can document creditable coverage during the period in question. People who qualify for the Extra Help program do not pay the Part D penalty. Otherwise, penalties generally remain for as long as you have that coverage.

 

How do I avoid Medicare late enrollment penalties entirely?

Enroll during your 7-month Initial Enrollment Period around your 65th birthday, or if you are still working with group coverage from an employer of 20 or more, enroll within 8 months of that employment ending (63 days for drug coverage). Keep your annual creditable-coverage notices as proof, and confirm your specific situation before deciding to delay.

 

Want a second set of eyes before you decide?

Our licensed agents review these situations every day and can check the details against the plans available in your area, at no cost to you, and tell you honestly when staying put is the right answer.