Should You Keep Medicare Part B If You Retire Abroad?

You paid into Medicare for forty years. Now you're about to move to Portugal, Mexico, or Thailand — and you discover Medicare pays exactly zero of your medical bills there. So why would you keep paying the standard Part B premium — $202.90 a month in 2026, or $2,434.80 a year — for coverage you can only use if you fly home?

That's the obvious question. Here is the less obvious one, and it's the whole reason this article exists: dropping Part B and coming back later triggers a late-enrollment penalty of 10% per year, added to your premium, for the rest of your life. That penalty is the one-way door most expat forums barely mention.

So this is the keep-or-drop calculator nobody else built: the penalty math worked out at 2026 rates, the Medigap myth dismantled, the traps the forums don't mention, and an honest decision framework at the end. We will not tell you which to choose. Anyone who gives you a recommendation sight unseen is selling something.

First: what Medicare actually covers abroad

Let's clear the ground floor before we do the math. Medicare generally does not cover health services you get outside the United States. The exceptions are so narrow they barely count: an emergency in Canada or Mexico where the foreign hospital is closer than a U.S. one, and care on a cruise ship within six hours of a U.S. port. A hospital in Lisbon, Mérida, or Bangkok sends the bill to you.

The parts break down like this for a retiree abroad:

• Part A (hospital insurance): premium-free for most people — if you or your spouse paid Medicare taxes for 40 quarters, you owe nothing for it. It covers nothing abroad, but it costs nothing to keep, and it covers hospital stays on visits back to the U.S. Keep it. This is the one part of the decision that isn't a decision.
• Part B (medical insurance): $202.90/month in 2026 — that's the figure Medicare itself uses in its penalty examples (medicare.gov, October 2026). There's also a $283 annual deductible. Higher earners pay more: the 2026 income surcharges (IRMAA) kick in at $109,000 for individuals and $218,000 for joint filers, which changes all the math below upward.
• Part D (drugs): has its own separate penalty clock — more on that below.

Short on the 40 quarters for premium-free Part A? Totalization agreements let you combine U.S. and foreign work credits to qualify — worth checking before you assume anything.

The penalty: 10% a year, forever

Medicare's own penalty page puts it plainly: "You'll pay an extra 10% for each year you could have signed up for Part B, but didn't." Two things make it brutal: it applies to every full 12-month period you went without Part B, and it never resets. It stays on your premium for as long as you have Part B. Medicare's own 2026 worked example: wait 2 full years, and your premium becomes $243.48 — rounded to $243.50/month.

Here is the table at 2026 rates, so you can see what a delay actually costs:

Three things about this table that most articles gloss over. First, the penalty is calculated as a percentage of the current standard premium, so it rises every year the premium rises — and premiums rise nearly every year. (The 2027 premium is projected around $209.50/month per the Medicare Trustees' June 2026 report, though that's a projection, not a promise.) Second, living abroad does not qualify you for a Special Enrollment Period — the foreign-health-insurance excuse doesn't stop the clock. Third, these numbers use the standard premium; if IRMAA surcharges apply to you, your penalty is bigger in absolute dollars.

Worth watching: this walkthrough covers the penalty math, the enrollment-period trap, and why the "fly to Guam for treatment" hack most expats cite is built on a misunderstanding. The written math below is the main course; the video is the map.

The calculator: keep vs. drop, worked honestly

Now the actual decision. There are two costs, and every keep-or-drop opinion you've read focuses on one while ignoring the other:

• Cost 1: premiums paid abroad for coverage you can't use — ~$2,435/year at 2026 rates, every year, growing.
• Cost 2: the permanent penalty if you drop, then re-enroll later — priced as a percentage of the then-current premium, forever.

Worked scenarios (2026 rates, no inflation — reality will be worse on both sides):

See the pattern? A 10%-per-year penalty means that after N years of delay, you repay roughly what you "saved" for every N years you live with the penalty. The system is priced to recoup. Drop for five years, live twenty with the penalty, and you hand back about twice what you saved — in exchange for the years of risk you took uninsured in the middle.

Which makes the real question brutally simple: how certain are you that you'll never move back? If the answer is genuinely "never" — and you've pressure-tested that against aging, health, grandkids, and politics — dropping is the rational call and the penalty is irrelevant. If the answer is "probably, but who knows" — and that describes most people — you're not choosing between $2,435/yr and $0. You're choosing between $2,435/yr now and a coin flip on a permanent surcharge later.

The Medigap myth, stated bluntly

Somewhere along the way, a comforting rumor took hold: my Medigap plan covers me abroad. Here is the truth, stated as bluntly as the plan documents state it. The foreign-travel emergency benefit on typical Medigap plans (C, D, F, G, M, N) pays 80% after a $250/year deductible, with a $50,000 lifetime cap — and only for emergencies that begin in the first 60 days of a trip.

Read that last part again. First 60 days of a trip. If you live abroad, day 61 never comes: a retiree living full-time overseas gets essentially nothing from this benefit, year after year, until the day they die. It's a traveler's benefit wearing an expat costume. And it never covers medical evacuation, which is the bill that can run $50,000 to $250,000 — the one expense that can actually wipe out a retirement (CoverTrip, September 2026).

Worse, it's a one-way door in the other direction too: most Medigap insurers require U.S. residency to enroll, so if you move abroad without a plan, you generally can't buy in later. If Medigap is part of your "keep a foot in the U.S. system" strategy, get it before you leave — not after.

Three traps the penalty math doesn't show

1. The General Enrollment Period trap

Suppose you drop Part B, live abroad for six years, and come home at 71 with a health scare in August. There is generally no Special Enrollment Period for returning expats. You wait for the General Enrollment Period — January 1 to March 31 — and coverage doesn't start until July 1. That's potentially eleven months without Part B, arriving exactly when you need it most. The penalty is the price; the gap is the punishment.

2. The Part D clock is separate and also permanent

Part D (prescription drugs) runs its own penalty: 1% of the national base beneficiary premium for every month you went without creditable drug coverage. That base premium is $38.99/month in 2026. Five years without coverage means roughly 60% × $38.99 ≈ $23.40/month extra, for life, on top of your plan premium. Foreign drug coverage doesn't count as "creditable" — only U.S. employer, union, or VA coverage does. If you're keeping Part B, don't forget Part D has a clock of its own.

3. The "I'll just visit the U.S. for care" half-plan

Here's the honest pro-keep angle nobody states: enrolled Part B covers care you receive during visits to the U.S. — specialists, planned procedures, second opinions. If you visit family in the States every year or two anyway, that coverage is real and usable. But it only works if you kept the coverage. Dropping Part B and then "popping home" for treatment means re-enrolling first — with the penalty and the waiting period. The half-plan requires the full premium.

Even Social Security says it might not be worth it

Here is our favorite honesty wedge, and it's the government's own. SSA Publication EN-05-10137, Your Payments While You Are Outside the United States (July 2025 edition), says it outright: "Because Medicare benefits are available only in the United States, it may not be to your advantage to sign up and pay the premium for medical insurance if you will be out of the United States for a long period of time."

The same publication, in the next breath, warns that when you do sign up later, your premium will be 10% higher for each 12-month period you could have been enrolled but weren't. That's the whole dilemma in one government paragraph: it may not be to your advantage to pay — and it will definitely cost you if you don't.

The honest decision framework (no recommendation)

We promised no recommendation, and we mean it. But we can give you the five questions that actually determine the right answer for you:

1. How certain are you that you'll never move back? Not "probably." Certain. The penalty only bites if you rejoin, but aging, health scares, grandchildren, and political weather have moved a lot of "nevers" back home. Be honest about your confidence level.
2. Will you visit the U.S. regularly? If yes, enrolled Part B covers care during those visits — a genuine, usable benefit the drop-it crowd ignores.
3. How good and how cheap is healthcare where you're going? Paying $2,435/year for unusable coverage stings less when your alternative is a $200,000 U.S. hospital bill — and more when a private hospital visit in your new country costs $40. See our real all-in budgets for Portugal and Mexico to ground this in numbers.
4. Can you afford the premiums indefinitely? If $2,435/year (rising) strains the budget, the drop-bet becomes rational — just make it with your eyes open about the GEP trap.
5. What's your health trajectory at 65? Healthy and 65 is a different bet than 72 with a managed condition. The penalty is priced in dollars; the enrollment gap is priced in risk.

Medicare abroad is really a bet about your future self. The math above tells you the price of each side of the bet. Only you know how you'd take it — and if you have a foreign pension, check what the WEP repeal changed for your Social Security math before you decide anything, since your benefit may have just gone up. And if premiums are deducted from your Social Security check, our plain-English Social Security abroad guide walks through receiving benefits overseas — plus the retiree tax checklist for what the IRS expects from you abroad.