Medicare for US Expats: Enrollment, Late Penalties, and the FEIE IRMAA Advantage

Medicare will cover almost nothing while you live abroad. But missing your enrollment window at 65 creates a permanent penalty that compounds every year you delay — and most expats don't realize it until they try to enroll on their way back to the United States. This 2026 guide covers what Medicare actually covers overseas, when and how to enroll, the IRMAA income-surcharge table, and a planning strategy unique to expats: using the Foreign Earned Income Exclusion to reduce your MAGI and eliminate thousands of dollars per year in IRMAA surcharges.

What Medicare Actually Covers Abroad

Original Medicare (Parts A and B) covers services only in the United States and US territories (Puerto Rico, Guam, US Virgin Islands, American Samoa, Northern Mariana Islands). The exceptions are narrow enough that most expats will never qualify:⁴

• Canadian border emergency: if you're in the US and have a medical emergency, and the nearest appropriate hospital is in Canada (most relevant for northern Maine and Alaska)
• Cruise ship within 6 hours of a US port: emergencies only, and the ship must not be a foreign-flag vessel more than 6 hours from port
• Alaska–Canada transit: emergency care in Canada while directly traveling between Alaska and the contiguous United States

If you are living in London, Singapore, Dubai, or anywhere else outside the US, Medicare will not pay your doctor bills. You need international health insurance for day-to-day care abroad — Medicare is effectively a reserve asset you maintain for when you return to the US.

Medicare Advantage (Part C) plans are even more restrictive. Most cover only emergency care outside the US, and only if your plan includes that benefit. Plans marketed with "international emergency coverage" typically cover a few hundred thousand dollars in acute emergency expenses, but provide no ongoing coverage. Medicare Advantage plans are designed for US-based beneficiaries.

Part A: Free for Most, Enroll Regardless

Medicare Part A covers inpatient hospital, skilled nursing facility (post-hospitalization), hospice, and some home health care. You qualify for premium-free Part A if you or your spouse have at least 40 quarters (10 years) of Social Security–covered US employment.¹ Most US citizens who worked full careers in the US qualify.

If you don't have 40 quarters, Part A costs:

If Part A is premium-free for you, enroll at 65 regardless of where you live. There is no monthly cost, and you preserve immediate hospital coverage for any US visit — planned or emergency — and for when you eventually return to the US full-time. There is no advantage to delaying premium-free Part A enrollment.

If you'd have to pay for Part A (fewer than 40 quarters), the decision is different. Premium Part A has its own late enrollment penalty: 10% surcharge for twice the number of years you could have enrolled but didn't. But this situation is relatively uncommon for expats with US work histories.

Part B: The Enrollment Decision That Defines Your Medicare Cost for Life

Medicare Part B covers outpatient medical care, physician services, preventive services, and durable medical equipment. Unlike Part A, Part B charges a monthly premium to everyone — and the enrollment timing decision has permanent consequences.

Initial Enrollment Period (IEP)

You have a 7-month window centered on your 65th birthday month to enroll in Part B without penalty: 3 months before, your birthday month, and 3 months after.⁵ Missing this window without a qualifying Special Enrollment Period locks in the late enrollment penalty permanently.

The Late Enrollment Penalty (LEP): Permanent and Compounding

If you don't enroll during your IEP and don't qualify for a Special Enrollment Period, your Part B premium increases by 10% for each 12-month period you were eligible for Part B but didn't enroll — permanently, for the rest of your life.⁵

Special Enrollment Period: When Foreign Employer Coverage Helps — and When It Doesn't

The law allows you to delay Part B enrollment without penalty if you are covered by a group health plan (GHP) based on your own or your spouse's current active employment.⁵ When that employment or coverage ends, you have an 8-month Special Enrollment Period to enroll in Part B with no penalty.

What qualifies as an employer GHP for expats

A foreign employer's group health plan can qualify for the SEP — CMS does not limit the SEP to US employer coverage. The requirements are:

• You are currently and actively employed (not retired, not self-employed)
• Your employer's plan covers at least 20 employees (smaller employer plans generally don't qualify)
• The coverage is through that current employment relationship

What does NOT qualify

• Individual international health insurance you purchase yourself — this is not an employer GHP regardless of how comprehensive the coverage is
• Retiree health coverage from a former employer
• COBRA continuation coverage
• Travel or short-term insurance
• Foreign national health system coverage (NHS, Germany's GKV, Singapore's MediShield Life) that you access as a foreign resident — these are government programs, not employer GHPs

The practical implication: if you are an expat employed full-time by a foreign company with employer-sponsored health coverage, you likely have an SEP and can delay Part B enrollment until you leave that job. If you are self-employed abroad, retired abroad, working as a contractor with individual coverage, or covered by a foreign national health system — you have no SEP and must enroll at 65 or face the penalty.

IRMAA: The Income-Related Surcharge — and Why FEIE Can Help

Since 2007, higher-income Medicare beneficiaries pay more for Part B and Part D. The Income-Related Monthly Adjustment Amount (IRMAA) is a surcharge added to the standard premium for beneficiaries with MAGI above $109,000 (single) or $218,000 (MFJ). IRMAA is based on your MAGI from two years prior — 2026 IRMAA is determined by 2024 income.²

2026 Part B IRMAA table

2026 Part D IRMAA surcharges

Part D IRMAA uses the same income brackets. The surcharge ranges from $14.50/month (Tier 1) to $91.00/month (Tier 5) added on top of your plan's own premium.²

The FEIE IRMAA planning opportunity

The Foreign Earned Income Exclusion reduces your Adjusted Gross Income — and MAGI is calculated from AGI. This means FEIE can shift you into a lower IRMAA tier or eliminate the surcharge entirely.

In the UAE scenario — a zero-tax country where FEIE is almost always the right strategy — the FEIE eliminates $324.60/month in IRMAA surcharges, saving $3,895/year on Part B alone, every year. For expats in low-tax countries (Singapore, UAE, Hong Kong, Cayman Islands), FEIE is usually the right tax strategy anyway. The IRMAA benefit is an additional layer of savings on top of income tax reduction.

For expats in high-tax countries (Germany, France, Netherlands), the Foreign Tax Credit usually produces a better overall income tax result than FEIE — the FTC eliminates US income tax on foreign income without reducing your MAGI. In those cases, the IRMAA calculation becomes one factor in the overall FEIE vs. FTC optimization. If the FEIE would push you below a meaningful IRMAA tier, that Medicare premium savings may tip the balance toward partial FEIE even in a high-tax country. Use the FEIE vs. FTC calculator and factor in both the income tax and the Medicare premium impact.

Part D: Prescription Drug Coverage and the Creditable Coverage Exception

Medicare Part D covers prescription drugs. Like Part B, it has a late enrollment penalty: 1% of the national base beneficiary premium ($38.99 in 2026) per month you went without creditable drug coverage — approximately $0.39/month per month of delay, permanent.³

What is creditable coverage?

If you had other drug coverage that is "creditable" — meaning it's at least as good as Medicare Part D's standard benefit — those months don't count against you for LEP purposes. Foreign prescription drug coverage can qualify as creditable coverage if the plan administrator has determined it meets the standard.

Practical guidance for expats:

• If your foreign employer health plan includes prescription drug coverage, request a creditable coverage letter from the plan administrator each year. Keep these letters permanently.
• When you eventually enroll in Part D, you'll need to document all periods of creditable coverage to avoid the penalty on those months.
• If you weren't covered by a creditable foreign drug plan (many international health plans don't include prescription coverage, or don't document it in the format Medicare requires), you may face Part D LEP for those months.
• Foreign national health systems (NHS, GKV, etc.) may provide effective drug coverage, but getting them to issue a US-format creditable coverage certification is often impractical. Consult your employer's benefits administrator.

Medigap: the 6-Month Open Enrollment Window

Medicare Supplement Insurance (Medigap) fills gaps in Original Medicare — covering deductibles, coinsurance, and other out-of-pocket costs. It is sold by private insurers, and normally you can be denied or charged more based on health history.

The exception: you have a 6-month Medigap open enrollment period that begins when you turn 65 and enroll in Part B. During this window, insurers must sell you any Medigap plan at the same rate as healthy applicants — no medical underwriting, no exclusions for pre-existing conditions.⁵

If you delay Part B enrollment as an expat (even with a valid SEP), you also delay the start of your Medigap open enrollment period. When you eventually do enroll in Part B, you get the 6-month guaranteed-issue window at that time. But if you're now 70 or 75 with a significant health history, the market options may be limited even within the guaranteed-issue window (in some states), and in states without additional protections you may only have guaranteed issue for certain Medigap plans. The earlier you enroll in Part B and Medigap, the better your options.

International Health Insurance vs. Medicare: What Expats Actually Need

For the years you live abroad, you need both — but they serve different purposes:

Most financially prudent expats in the 65+ age bracket carry both: international health insurance for day-to-day and emergency care abroad, plus Medicare Part A (free) and Part B ($202.90/month) for when they visit or eventually return to the US. The cost of maintaining Medicare Part B while abroad is modest relative to the permanent penalty that accumulates if you skip it.

Enrollment Strategy When You Return to the US

If you return to the US at 65 or later and had no qualifying SEP:

1. Part A: Enroll immediately if you haven't. Premium-free Part A doesn't have an ongoing LEP (the penalty only applies during the period after you first become eligible).
2. Part B: You can enroll during the General Enrollment Period (January 1–March 31 each year) with coverage starting July 1 — but you'll owe the LEP for every year you were eligible but didn't enroll. There is no way to waive or reduce the penalty except during the 8-month SEP window after employer GHP coverage ends.
3. Part D: Enroll during the General Enrollment Period or a Special Enrollment Period. Present creditable coverage documentation for periods of foreign coverage to reduce or eliminate the Part D LEP.
4. Medigap: Enroll during the 6-month guaranteed-issue window that starts when you enroll in Part B, regardless of your age at enrollment.

IRMAA Appeal: Using Form SSA-44 When Income Drops

IRMAA is based on income from two years prior. If your income drops significantly — you retire, your spouse stops working, you start using FEIE — the IRMAA calculation from two years ago may overstate your current situation. You can appeal:²

• File SSA Form SSA-44 (Medicare Income-Related Monthly Adjustment Amount — Life-Changing Event) with your local Social Security office
• Qualifying life-changing events include: retirement, reduction of work hours, divorce, death of spouse, employer pension termination
• Moving abroad and electing FEIE is not itself a qualifying event for Form SSA-44 — but if the FEIE election accompanies a retirement or work reduction, the retirement or work reduction IS a qualifying event
• SSA will use your current-year estimated income rather than the two-year-old income to calculate IRMAA while the appeal is pending

Why a Specialist Matters for Expat Medicare Decisions

The Medicare enrollment decision doesn't happen in isolation — it interacts with three other planning variables that most domestic financial advisors don't handle:

• FEIE vs. FTC choice affects IRMAA. The decision to use the Foreign Earned Income Exclusion vs. Foreign Tax Credit is usually made for income tax reasons — but it also affects your Medicare MAGI for IRMAA purposes. A specialist models both the income tax and the Medicare premium impact simultaneously.
• State domicile affects Medigap. If you sever domicile from California or New York before leaving the country, your Medigap enrollment window on return may be in a more insurance-friendly state. Some states provide additional Medigap guaranteed-issue protections beyond federal minimums. See the state residency planning guide.
• Social Security timing interacts with Medicare enrollment. If you delay Social Security past 65, you are not automatically enrolled in Medicare at 65 — you must proactively sign up. Many expats who also delay Social Security miss this. See the Social Security for expats guide.
• IRMAA and Roth conversion windows. If FEIE creates low-MAGI years while you're abroad, those same years may be excellent windows for Roth conversions — before IRMAA kicks in when you return to the US and start taking distributions. See the Roth conversion calculator for expats.

Sources

1. CMS — 2026 Medicare Parts A & B Premiums and Deductibles. Standard Part B monthly premium: $202.90 (2026). Part B annual deductible: $283. Part A premium for 30–39 quarters: $311/month. Part A premium for fewer than 30 quarters: $565/month. Part A is premium-free for those with 40+ quarters of Social Security–covered employment. Published November 14, 2025.
2. SSA POMS HI 01101.020 — IRMAA Sliding Scale Tables (updated December 2, 2025). 2026 Part B IRMAA tiers based on 2024 MAGI: Tier 1 ($109K–$137K single / $218K–$274K MFJ) +$81.20; Tier 2 ($137K–$171K/$274K–$342K) +$202.90; Tier 3 ($171K–$205K/$342K–$410K) +$324.60; Tier 4 ($205K–$500K/$410K–$750K) +$446.30; Tier 5 (>$500K/>$750K) +$487.00. SSA Form SSA-44 available for life-changing-event IRMAA appeal at ssa.gov/forms/ssa-44.pdf.
3. CMS — 2026 Medicare Part D Base Beneficiary Premium. National base beneficiary premium: $38.99/month in 2026. Late enrollment penalty: 1% × $38.99 per month without creditable coverage (approximately $0.39/month per month of delay), permanent. Part D IRMAA surcharges range from $14.50 (Tier 1) to $91.00/month (Tier 5), using the same 2024 MAGI income brackets as Part B IRMAA.
4. Medicare.gov — 2026 Medicare Costs Fact Sheet. Original Medicare (Parts A and B) generally covers services only in the US and US territories. Three narrow exceptions for foreign care: emergency care at a foreign hospital closer to a US border than any US hospital; care on a cruise ship within 6 hours of a US port; emergency care in Canada when traveling directly between Alaska and the contiguous US. All other foreign care is non-covered regardless of circumstance.
5. Medicare.gov — Avoid Late Enrollment Penalties. Part B LEP: 10% of standard premium per 12-month period eligible but not enrolled; permanent for life. Initial Enrollment Period: 7-month window (3 months before through 3 months after the month you turn 65). Special Enrollment Period: 8 months after employer GHP coverage or employment ends. Medigap open enrollment: 6-month guaranteed-issue window beginning when you enroll in Part B at age 65 or older.

Medicare premiums, IRMAA thresholds, and late enrollment penalty rules are governed by 42 U.S.C. § 1395r and related CMS regulations. 2026 Part B premium per CMS November 14, 2025 announcement; IRMAA tiers per SSA POMS HI 01101.020 (December 2, 2025); Part D base premium per CMS 2026 Part D Bid Information announcement. FEIE 2026 maximum $132,900 per IRS Rev. Proc. 2025-67. IRMAA surcharge amounts confirmed via Kiplinger (kiplinger.com/retirement/medicare/medicare-premiums-2026-irmaa-brackets-and-surcharges-for-parts-b-and-d) cross-referencing SSA POMS tables. Values verified June 2026.