Chapter 6: Avoiding Medicare Penalties

The most important distinction in this chapter is simple: VA health care can coexist with Medicare, but it is not a substitute for enrolling in Medicare Part B when your enrollment window arrives. VA and TRICARE prescription coverage are a different question because they may count as creditable coverage for Part D. Your exact timing depends on your age, current employment, and other coverage, so use the official rules rather than a general assumption.^[1][3][6]

1. Start with the two penalty questions

Medicare penalties are not one single rule. Part B concerns medical and outpatient coverage. Part D concerns prescription drug coverage. The coverage that protects you for one part may not protect you for the other.

This table is a starting point, not an enrollment determination. Medicare, Social Security, VA, and TRICARE can confirm the rule that applies to your record.

2. How the Part B late enrollment penalty works

Medicare.gov says the Part B late enrollment penalty is an extra 10% of the standard Part B premium for each full 12-month period you could have had Part B but did not. The penalty usually continues for as long as you have Part B. A qualifying Special Enrollment Period or a Medicare Savings Program can change the outcome.^[3]

The dollar amount is not fixed because the percentage is applied to the current Part B premium. The standard Part B premium is $202.90 for 2026; higher-income beneficiaries may owe more. This is a 2026 figure, not a projection of a future premium.^[9][10][7]

• One full 12-month period without Part B can mean a 10% penalty.
• Three full 12-month periods can mean a 30% penalty.
• Five full 12-month periods can mean a 50% penalty.
• The calculation uses the applicable current Part B premium, and Medicare applies its rounding rules.^[3]

This table shows the formula, not a promise about a particular person's bill. Eligibility, Medicare Savings Programs, income-related amounts, and rounding can affect the final premium.^[3][9]

For a quick estimate, you can use the site's Part B Penalty Calculator, then confirm the result with Medicare or Social Security. A calculator is an estimate; it cannot decide whether your past coverage qualified.

3. Why VA health care does not replace Medicare enrollment

VA explains that having other health insurance does not determine whether you can receive VA health care, and it encourages eligible veterans to sign up for Medicare. Medicare can provide another route to care at a non-VA hospital or doctor, while VA health care remains a separate system. VA also says you choose which benefits to use each time you receive care; VA and Medicare do not pay for the same item or service.^[1][11]

VA community care is also not a general replacement for Medicare enrollment. Community care must be authorized by VA before a veteran receives care from a community provider, subject to the program's rules.^[12]

If you have CHAMPVA and become eligible for Medicare, VA says you must have both Part A and Part B to get or keep CHAMPVA; a Medicare Advantage plan can also meet that requirement.^[13]

4. TRICARE For Life requires Parts A and B

TRICARE For Life is wraparound coverage for people who are TRICARE-eligible and have Medicare Part A and Part B. You must keep paying the Part B premium to keep Part B, and TFL is not a reason to skip Part B. You do not need Medicare Part C or Part D for TFL eligibility.^[5][4]

1. Confirm that you are enrolled in Medicare Part A and Part B before TFL is expected to begin.
2. Plan for the Part B premium and check that Medicare has your correct address and enrollment information.
3. If both programs cover a service, Medicare generally pays first and TRICARE pays last; services covered by only one program can have different cost-sharing rules.^[5]
4. If you choose a Medicare Advantage plan, use that plan's network for nonemergency care, expect that copayments may apply, and understand that paper claims to TRICARE may be needed.^[4]

The TRICARE For Life and Medicare guide explains coordination in more detail. Because plan networks and claims procedures can change, check TRICARE's current instructions before an appointment.

5. Know your Medicare enrollment windows

The safest enrollment window is usually the Initial Enrollment Period unless you have a qualifying reason to use a Special Enrollment Period. Medicare and Social Security should confirm the dates for your situation.

Initial Enrollment Period: the seven-month window

• It begins three months before the month you turn 65.
• It includes your birthday month.
• It ends three months after the month you turn 65, for a total of seven months.^[2]
• Coverage start dates depend on when you enroll. If your birthday is on the first day of the month, Medicare coverage can start the month before your birthday month.^[2]

If you are already receiving Social Security benefits at least four months before turning 65, Medicare says you may be automatically enrolled in Parts A and B. Otherwise, Social Security explains how to sign up.^[14]

Special Enrollment Period: current employment matters

A Part B Special Enrollment Period is generally tied to coverage from current employment for you or your spouse. COBRA and retiree coverage do not create that employment-based SEP. Medicare says the SEP generally lasts eight months after the employment or qualifying group coverage ends, but your exact dates should be confirmed before you delay enrollment.^[2]

• Ask the employer or benefits administrator whether the coverage is group health coverage from current employment.
• Do not treat VA health care, VA community care, COBRA, or retiree coverage as a current-employment SEP without confirmation.^[2][1]
• Keep proof of coverage and the dates you or your spouse were actively working.

General Enrollment Period: a later route

Medicare's General Enrollment Period runs January 1 through March 31 each year. If you use it after missing an earlier window, a late enrollment penalty may apply and coverage generally begins after enrollment. Check the current start-date rule before making a decision.^[15][2]

6. Part D follows a different rule for many veterans

Medicare lists prescription drug coverage from the Department of Veterans Affairs and TRICARE among examples of creditable prescription drug coverage. Creditable means the coverage is expected to pay, on average, at least as much as standard Medicare drug coverage.^[6]

• Keep your VA or TRICARE drug-coverage notices and enrollment records.
• If that creditable drug coverage ends, ask about a Part D Special Enrollment Period promptly; Medicare uses a 63-day gap rule.^[6][1]
• Do not assume that VA medical coverage and VA prescription coverage have the same Medicare effect.
• If you join a Medicare drug plan, answer its questions about prior creditable coverage accurately.

The VA health care and Medicare guide covers the practical coordination questions that sit behind this distinction.

7. IRMAA is a surcharge, not a late enrollment penalty

The Income-Related Monthly Adjustment Amount, or IRMAA, is an income-related surcharge added to Medicare Part B and Part D premiums for some higher-income beneficiaries. It is separate from a late enrollment penalty. Social Security generally uses tax information from two years earlier; for 2026, the relevant tax year is generally 2024, and the first income thresholds are $109,000 for single filers and $218,000 for joint filers.^[7][8]

• A pension distribution, property sale, or Roth conversion can affect the tax return used for the later IRMAA determination.
• VA disability benefits administered by VA are generally not included in federal gross income, but other income can still affect MAGI; ask a qualified tax professional about your return.^[16][7]
• If your income fell because of a qualifying life-changing event, Social Security's IRMAA appeal process may apply. Form SSA-44 is the starting point described by SSA.^[8]

For a deeper explanation, see the site's IRMAA guide. Do not label an IRMAA determination as a Part B late enrollment penalty; the records and appeal path are different.

8. If a penalty notice looks wrong

Read the notice carefully and compare it with your Medicare enrollment dates, employment dates, and coverage records. If the notice concerns employment-based coverage, ask the employer or benefits administrator for written dates and contact Social Security for the official review process. If the issue concerns VA or TRICARE, ask that agency to confirm the coverage dates and type as well.

1. Collect the timeline Write down your 65th-birthday month, when you stopped working, when group coverage ended, and when Part A or Part B began.
2. Separate the coverage type Identify whether the disputed months involve current-employment group coverage, VA health care, TRICARE, COBRA, retiree coverage, or prescription coverage.
3. Send records through the official channel Use the instructions on the notice and keep copies of forms, employer statements, coverage notices, and delivery confirmations.
4. Ask before changing coverage Do not drop VA, TRICARE, employer, or Medicare coverage while a question is unresolved. Confirm the effect with the agency that administers the coverage.

9. Programs that may help with Medicare costs

Medicare Savings Programs are state-administered programs that may help eligible people pay Part B premiums and, for some programs, other Medicare cost-sharing. Income and asset rules apply, and the rules can change. Medicare says to apply through your state even if you are not sure you qualify.^[17]

For an application, contact your state Medicaid office or State Health Insurance Assistance Program. Medicare's official Medicare Savings Programs page has the current eligibility information and instructions.^[17]

10. A practical checklist before you delay Part B

• I know whether I am in my seven-month Initial Enrollment Period.
• I have asked whether current employment coverage, for me or my spouse, creates a Part B Special Enrollment Period.
• I am not treating VA health care, VA community care, COBRA, or retiree coverage as current-employment coverage without confirmation.^[2][1]
• If I have TRICARE For Life, I have a plan for Medicare Parts A and B and the Part B premium.^[5]
• I know whether my prescription coverage is creditable and where its records are stored.^[6]
• I have checked whether an income change could affect IRMAA and know where to ask about an appeal.^[8]
• I have written down the questions I will ask Medicare, Social Security, VA, TRICARE, or my employer benefits office.

11. Key takeaways for veterans

• Part B and Part D have different late enrollment rules.
• VA health care does not replace the need to evaluate Medicare Part B enrollment.^[1][3]
• VA and TRICARE prescription coverage can protect against a Part D late enrollment penalty when it remains creditable.^[6]
• TRICARE For Life requires Parts A and B, while Part C and Part D are not required for TFL eligibility.^[4]
• IRMAA is an income-related surcharge and should not be confused with a late enrollment penalty.^[7]
• When your situation is unusual, get the coverage administrator's answer in writing before you delay or drop coverage.

12. Continue the field guide

This chapter is designed to help you prepare better questions, not to replace an enrollment decision from Medicare or Social Security. Continue to the complete Medicare field guide, or start with the Veterans Medicare FAQ for related answers. For a coverage-specific conversation with Veterans Advantage Financial®, you can book a call or call 888-960-8387.