TRICARE Overseas · 2026 Educational Guide

Do You Still Need Medicare Part B If You Have TRICARE and Live Overseas?

Short answer: yes. If you are Medicare-eligible and living abroad — in the Philippines or anywhere outside the US — you must keep Medicare Part B to stay TRICARE-eligible, even though Medicare pays nothing overseas. Here is how it actually works, what it costs in 2026, and what is specific to the Philippines.

The rule that surprises retirees
You must have Medicare Part B to remain eligible for TRICARE — even though Medicare does not provide coverage outside the US and its territories. Drop Part B, or stop paying the premium, and you lose TRICARE For Life. This is federal law (Title 10, Chapter 55, US Code).

The short answer, and why it trips people up

It feels backwards, and that is exactly why so many retirees get it wrong. Medicare generally does not pay for care outside the US and US territories. So when a military retiree moves to the Philippines — or Japan, Thailand, Germany, anywhere overseas — the natural instinct is: "Medicare does nothing for me here, so why keep paying for Part B?"

Because your TRICARE eligibility depends on it. Under federal law, a Medicare-eligible TRICARE beneficiary (other than active-duty service members and their families) loses TRICARE eligibility unless they are enrolled in Medicare Part B. If you drop Part B to "save money" overseas, you don't just lose Medicare — you lose TRICARE For Life too, which is the coverage you actually use abroad.

How TRICARE For Life works overseas

TRICARE For Life (TFL) is Medicare-wraparound coverage for retirees who have both Medicare Part A and Part B. In the US, Medicare pays first and TFL pays second. Overseas, it flips:

Overseas, TRICARE becomes the primary payer

What it costs in 2026

There is no enrollment fee and no monthly premium for TRICARE For Life itself. Your only required cost to keep TFL is the Medicare Part B premium.

2026 numbers

So the honest math for an overseas retiree: you pay the Part B premium every month for coverage Medicare won't use abroad — but that premium is the price of keeping TRICARE For Life, which is the coverage that actually pays overseas. For most retirees, that trade is clearly worth it.

What's specific to the Philippines

The Philippines is one of the places where the general overseas rules come with an important caveat, and it's worth knowing before you assume your coverage works the same as it would in the US.

Philippines provider notes

None of this changes the core rule — you still must keep Medicare Part B. It just means the how you get care part deserves a little homework in the Philippines specifically.

Common TRICARE questions from retirees overseas

Do I really lose TRICARE if I drop Part B? Yes. For Medicare-eligible retirees, TRICARE eligibility is tied to Part B enrollment. Drop it or stop paying the premium and you lose TRICARE For Life.

Medicare pays nothing here — isn't Part B a waste overseas? Medicare itself won't pay abroad, but Part B is the requirement that keeps TFL active, and TFL does pay overseas as the primary payer. You're effectively paying the Part B premium to keep TFL.

Do I need a Medigap or Part D plan too? Generally no. TFL is the wraparound, and TRICARE's pharmacy benefit is creditable coverage, so most TFL beneficiaries do not need separate Medigap or Part D. Confirm your own situation.

What if I move back to the US later? In the US and its territories, Medicare pays first and TFL pays second again. Keeping Part B the whole time avoids a late-enrollment penalty and a gap in TRICARE.

How do I pay for care in the Philippines? Typically you pay the provider and file a claim with the overseas contractor for reimbursement, subject to TRICARE's deductible, cost-shares, and allowable-charge limits.

Monte Fisher, CPA (Ret.), CFE
Monte Fisher, CPA (Ret.), CFE
Retired Texas CPA · Certified Fraud Examiner · 25+ years forensic analytics · Based in Makati, Philippines
Monte publishes free educational guides for US veterans and military retirees living overseas — built on the same evidence-based, no-conflicts methodology he applies to forensic analysis. This article is part of that ongoing library.

About Monte Fisher

VCAnalytics.ai is the veterans-education arm of Monte Fisher's broader practice in forensic analysis and AI governance. Monte is a retired Texas CPA and Certified Fraud Examiner providing educational resources for US veterans and retirees living overseas.

Official Resources

TRICARE For Life — tricare.mil → Using TRICARE For Life Overseas → Medicare Part B costs — medicare.gov → TRICARE Overseas Program (International SOS) →

TRICARE guides for other countries

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Disclaimer: Monte Fisher is a retired CPA and Certified Fraud Examiner; he is not VA-accredited, is not a TRICARE or Medicare representative, and does not enroll beneficiaries, file claims, or provide legal, medical, or insurance advice. All content here is educational and informational only. TRICARE, Medicare, and premium figures change — verify your current eligibility and costs at tricare.mil, medicare.gov, and with the TRICARE overseas contractor before making any decision. © 2026 VCAnalytics.ai.