On this page
- Why does TRICARE For Life require Part B?
- When does TRICARE For Life begin?
- How much does Part B cost in 2026?
- What happens if you delay Part B?
- Do you need Medicare Part C or Part D for TFL?
- How do VA health care and TFL interact with Medicare?
- A practical checklist for military retirees
- Common questions
- Sources
Key points
- Eligible TRICARE For Life beneficiaries need both Medicare Part A and Part B; Part C and Part D are not required for TFL.[1][2]
- TRICARE For Life begins the first day both Parts A and B are in effect. TRICARE recommends enrolling at least two months before turning 65 to help avoid a gap.[1][2]
- The 2026 standard Part B premium is $202.90 per month, although some people pay more based on income.[3][4]
- The Part B late-enrollment penalty is generally 10% for each full 12-month period you could have had Part B, usually for as long as you have Part B.[5]
- If you choose Medicare Advantage, the plan may add network, copayment, prior-authorization, and claims rules to Medicare-covered care; compare the plan before enrolling.[1][6]
Watch: Why you need Part B to keep TRICARE For Life
If you are eligible for TRICARE For Life, do not treat Medicare Part B as optional. TFL requires both Medicare Part A and Part B, and coverage begins the first day both are in effect. Part C and Part D are not required for TFL, but Part C can change how your Medicare-covered care is delivered and paid for.[1][2]
Why does TRICARE For Life require Part B?
TRICARE For Life is Medicare-wraparound coverage for eligible TRICARE beneficiaries. You must have Medicare Parts A and B and keep paying the Part B premium. For services both programs cover, Medicare generally pays first and TFL pays last.[2][1]
Part A generally covers inpatient hospital care, skilled nursing facility care, hospice, and some home health care. Part B generally covers doctors' services and outpatient care. In 2026, Original Medicare's inpatient hospital deductible is $1,736 per benefit period; covered inpatient hospital costs are generally $0 per day for days 1–60 after the deductible, subject to Medicare rules. Your actual coverage and costs depend on the service and other coverage.[3][4]
Skipping Part B can mean losing TFL eligibility. Do not assume VA health care, retiree coverage, or a later Medicare Advantage enrollment will protect you from the Part B timing rules. Confirm your specific effective dates with Medicare, Social Security, and DEERS.[1][7][8]
When does TRICARE For Life begin?
For eligible beneficiaries, TFL begins automatically on the first day you have both Medicare Parts A and B. TRICARE recommends enrolling in both at least two months before turning 65 to help avoid a coverage gap. Confirm your Medicare effective dates and DEERS status rather than relying only on your birthday month.[1][2]
How much does Part B cost in 2026?
The 2026 standard Medicare Part B premium is $202.90 per month, and the annual Part B deductible is $283. People with higher incomes may pay an income-related amount instead. The standard premium is a 2026 figure; future premiums can change.[3][4]
Medicare Part B is funded through beneficiary premiums and federal funds authorized by Congress, not solely through payroll taxes. Part A's Hospital Insurance Trust Fund is funded mainly by payroll taxes and other sources.[9]
What happens if you delay Part B?
Medicare's Initial Enrollment Period lasts seven months: the three months before your 65th-birthday month, your birthday month, and the three months after. If you delay Part B without a qualifying Special Enrollment Period, the late-enrollment penalty is generally 10% for each full 12-month period you could have had Part B, usually for as long as you have Part B.[5][7]
VA health care is not current-employment group coverage for the usual Part B Special Enrollment Period. COBRA and retiree coverage generally do not create that employment-based SEP either. Ask Social Security or a SHIP counselor about your own circumstances before delaying Part B.[8][7][5]
Do you need Medicare Part C or Part D for TFL?
No. Part C and Part D are not required to have TFL. If you choose Medicare Advantage, you still need Parts A and B, and the plan generally delivers your Medicare-covered Part A and Part B benefits.[1][6]
TFL's rules do not disappear when you choose Part C. For nonemergency care, you generally must use the Medicare Advantage plan's network; copayments may apply at the time of service, and you may need to file paper claims for TRICARE reimbursement. Confirm how the plan and TFL coordinate before enrolling.[1]
Some Medicare Advantage plans may help pay all or part of the Part B premium. This is a plan-specific Part B premium reduction, not a refund or cash payment. Availability and amount vary by county, plan, and year; a $0 plan premium can still leave Part B premiums, copayments, deductibles, networks, authorization rules, and an out-of-pocket limit. Compare the whole plan, not only its premium reduction.[10][4][11]
How do VA health care and TFL interact with Medicare?
VA health care and Medicare are separate programs. Other insurance does not change VA health care eligibility, but you generally choose which benefit to use for each service. VA community care must be authorized by VA before non-emergency community care, while Medicare pays Medicare-covered care under Original Medicare or your Medicare plan.[8][12][13]
A Medicare Advantage plan does not determine VA eligibility, but it can change how Medicare-covered care is accessed and paid for. VA dental, vision, and hearing benefits depend on eligibility category, service-connected conditions, and the specific benefit; do not rely on a rating-only rule. Original Medicare also does not cover most routine dental care, eye exams for glasses, or hearing aids, while some Medicare Advantage plans may offer extra benefits.[14][15][16]
For emergency care at a non-VA facility, call 911. VA rules include emergency-department care and notifying VA within 72 hours, along with other eligibility requirements.[17]
A practical checklist for military retirees
- Check your Medicare status Some people are automatically enrolled in Parts A and B when they are already receiving Social Security or Railroad Retirement benefits; others must sign up through Social Security. Check your Medicare notice and confirm your Part B effective date.[18][7]
- Protect the TFL requirement Make sure both Parts A and B are active and that your Part B premium is being paid. Confirm your status with Medicare and DEERS.[2][1]
- Compare optional coverage carefully If you consider Medicare Advantage, compare its network, copayments, prior authorization, claims process, yearly out-of-pocket limit, drug coverage, and any Part B premium reduction.[6][4][10]
- Use official help Review Medicare.gov and TRICARE guidance, or book a call to discuss questions with an independent insurance agency. There is no cost to you for our help; if you enroll, we are paid by the insurance company.
For more education, see the TRICARE For Life and Medicare guide, VA health care and Medicare, and the Veterans Medicare FAQ. Veterans Advantage Financial® is not affiliated with or endorsed by Medicare, CMS, Social Security, VA, TRICARE, or any government agency.
Common questions
Can I keep TRICARE For Life without Medicare Part B?
No. Eligible TFL beneficiaries need both Parts A and B and must keep paying the Part B premium. Part C and Part D are not required for TFL.[1][2]
Does TFL begin automatically at age 65?
TFL begins automatically the first day both Parts A and B are in effect. TRICARE recommends enrolling at least two months before turning 65 to help avoid a gap.[1]
Can I choose Medicare Advantage with TFL?
Yes, if you have Parts A and B, but Medicare Advantage may require network care, copayments, and paper claims for TRICARE reimbursement. Review the plan and TFL rules before enrolling.[1][6]
Sources
- TRICARE (Defense Health Agency). “Q&A: How does TRICARE For Life work with Medicare?” TRICARE Newsroom, December 14, 2023. newsroom.tricare.mil/News/TRICARE-News/Article/3617884/qa-how-does-tricare-for-life-work-w
- TRICARE (Defense Health Agency). “TRICARE For Life.” TRICARE.mil, last updated September 25, 2026. tricare.mil/tfl
- Centers for Medicare & Medicaid Services. “2026 Medicare Parts A & B Premiums and Deductibles” (fact sheet), November 14, 2025. cms.gov/newsroom/fact-sheets/2026-medicare-parts-b-premiums-deductibles
- Medicare.gov. “Medicare costs.” medicare.gov/basics/costs/medicare-costs
- Medicare.gov. “Avoid late enrollment penalties.” medicare.gov/basics/costs/medicare-costs/avoid-penalties
- Medicare.gov. “Joining a health or drug plan.” medicare.gov/basics/get-started-with-medicare/get-more-coverage/joining-a-plan
- Medicare.gov. “When does Medicare coverage start?” medicare.gov/basics/get-started-with-medicare/sign-up/when-does-medicare-coverage-start
- U.S. Department of Veterans Affairs. “VA health care and other insurance.” VA.gov, last updated July 14, 2025. va.gov/resources/va-health-care-and-other-insurance
- Medicare.gov. “How is Medicare funded?” medicare.gov/about-us/how-is-medicare-funded
- Centers for Medicare & Medicaid Services. Medicare & You 2027 (official Medicare handbook), pages 11 and 69. medicare.gov/publications/10050-medicare-and-you.pdf
- KFF (independent health policy research). “Medicare Advantage 2026 Spotlight: A First Look at Plan Premiums and Benefits,” December 9, 2025. kff.org/medicare/medicare-advantage-2026-spotlight-a-first-look-at-plan-premiums-and-benef
- U.S. Department of Veterans Affairs. “Community care: Veteran care overview.” VA.gov. va.gov/communitycare/programs/veterans/index.asp
- Medicare.gov. “Who pays first?” (coordination of benefits). medicare.gov/health-drug-plans/coordination/who-pays-first
- VA.gov. VA dental care va.gov/health-care/about-va-health-benefits/dental-care
- U.S. Department of Veterans Affairs. “VA priority groups.” VA.gov. va.gov/health-care/eligibility/priority-groups
- Medicare.gov. “What’s not covered by Part A & Part B.” medicare.gov/providers-services/original-medicare/not-covered
- U.S. Department of Veterans Affairs. “Getting emergency care at non-VA facilities.” VA.gov, last updated December 4, 2025. va.gov/resources/getting-emergency-care-at-non-va-facilities
- Medicare.gov. How do I sign up for Medicare? medicare.gov/basics/get-started-with-medicare/sign-up/how-do-i-sign-up-for-medicare
Sources checked October 11, 2026. Dollar amounts are for 2026 unless noted.
This is general education, not personal advice, and it isn’t a recommendation of any specific plan. Veterans Advantage Financial® is a licensed insurance agency, not affiliated with or endorsed by Medicare, Social Security, VA, TRICARE or any government agency. Plan availability, costs and benefits vary by plan, county and year. Check your own situation with the agency or plan before making changes.
Christopher Duncan
Christopher founded Veterans Advantage Financial® and has helped people with Medicare since 2006. He is a licensed insurance agent in all 50 states and DC (NPN 8613503). His dad, Wallace, is a Vietnam-era veteran.