Medicare Part B Living Abroad: 2026 Rules

Americans living abroad remain subject to Medicare Part B enrollment rules. The 2026 standard Part B premium is $202.90 a month, and missing the Initial Enrollment Period without a qualifying exception adds a permanent 10% penalty for each full 12-month period of delay — a surcharge that lasts for as long as the enrollee has Part B.

Does living abroad delay the Medicare Part B enrollment clock?

No — simply residing outside the United States does not pause the enrollment clock for most people. The Initial Enrollment Period (IEP) opens three months before the month a person turns 65 and closes three months after, running for a total of seven months. After that window closes, enrollment is only available during the General Enrollment Period (January 1 through March 31 each year) or during a qualifying Special Enrollment Period (SEP). Missing the IEP without a qualifying reason means the late-enrollment penalty begins to accumulate immediately.

There is one statutory exception tied to overseas activity: Americans who volunteer abroad through a tax-exempt organization and maintain health insurance providing coverage outside the United States qualify for an SEP. That SEP starts on the first day of the month any one of three things happens — the volunteer work ends, the organization loses its tax-exempt status, or the foreign health coverage ends — and it runs for six months from that date.

What is the Part B late-enrollment penalty and how is it calculated?

The Part B late-enrollment penalty is 10% of the standard monthly premium for each full 12-month period during which the person could have had Part B but did not enroll. In 2026 the standard Part B monthly premium is $202.90, so one year of delay adds $20.29 and two full years add $40.58, bringing the 2026 monthly total for a two-year delay to $243.50 (rounded to the nearest $0.10).

Two features of the penalty are especially significant for long-term expatriates. First, it is not a one-time fee — it is added to every monthly premium. Second, for most people it is permanent: it continues for as long as the enrollee holds Part B coverage. The penalty also rises in proportion to the standard premium, which is adjusted each year.

• The penalty rate is 10% for each full 12-month period without Part B.
• The 2026 standard Part B premium is $202.90; the 2026 annual deductible is $283.
• Higher-income enrollees already pay an Income-Related Monthly Adjustment Amount (IRMAA) on top of $202.90; the penalty is layered on top of that as well.
• The penalty is waived for enrollees who qualify for a Special Enrollment Period or a Medicare Savings Program.

What enrollment periods are available to Americans abroad?

Outside the seven-month Initial Enrollment Period, Part B enrollment is available only in defined windows. The General Enrollment Period runs from January 1 to March 31 each year, with coverage beginning the month after sign-up. Enrolling during the General Enrollment Period after missing the IEP — without a qualifying SEP — triggers the late-enrollment penalty.

Several Special Enrollment Period triggers are relevant to Americans abroad. The overseas-volunteer SEP described above lets qualifying volunteers enroll for six months after their service or foreign coverage ends. Additionally, people who had job-based health coverage through their own or a spouse’s current employer have an SEP that begins the month after the IEP ends and lasts for eight months after the group health plan coverage or the employment ends, whichever comes first. COBRA coverage does not count as group health plan coverage for this purpose, and getting COBRA does not change when the SEP ends.

• Initial Enrollment Period: 7 months centered on the 65th birthday month.
• General Enrollment Period: January 1 – March 31 each year; coverage starts the following month.
• Overseas-volunteer SEP: 6 months from the end of volunteer work, loss of organizational tax-exempt status, or end of foreign health coverage.
• Employer-coverage SEP: up to 8 months after active job-based coverage or employment ends (COBRA does not extend this window).
• Return-to-US SEP for Medicare Advantage and Part D plans: 2 full months after the month of returning to the United States.

What happens to Part B enrollment when someone moves back to the US?

A person who returns to the United States after living abroad and who already holds Part A and Part B can join a Medicare Advantage Plan or a Medicare drug plan within 2 full months after the month they move back. This is a named SEP in the Medicare rules: “I moved back to the U.S. after living outside the country” triggers a 2-month window to join a Medicare Advantage or Part D plan.

For those who delayed Part B enrollment while abroad and did not have a qualifying SEP, returning to the United States does not itself create a new SEP for Part B. Those individuals must wait for the next General Enrollment Period (January 1 – March 31) and will owe the accumulated late-enrollment penalty. If the delay was caused by an exceptional circumstance — such as a natural disaster or emergency declared on or after January 1, 2023, or inaccurate information from a health plan or employer on or after that same date — a separate SEP may apply, and the individual must contact the Social Security Administration to request it.

Does Part B cover care received outside the United States?

Original Medicare — Part A and Part B — generally does not pay for health care services received outside the United States. This is a separate question from enrollment: a beneficiary can hold and pay for active Part B coverage while living abroad and still receive no Part B reimbursement for care obtained in a foreign country. The companion article Does Medicare Cover You Abroad? 2026 Rules explains the coverage rules in detail.

Because Medicare Part B covers physicians’ services, outpatient hospital services, certain home health services, durable medical equipment, and other medical and health services not covered by Part A, the monthly premium of $202.90 in 2026 is the cost an expatriate pays to keep the coverage intact — even if none of those services can be reimbursed during the period of overseas residence.

How does Part B interact with Part A costs for expatriates in 2026?

Approximately 99% of Medicare beneficiaries do not pay a Part A premium because they or a spouse paid Medicare taxes for at least 40 quarters. For those who must purchase Part A, the 2026 monthly premium is $565 for those with fewer than 30 quarters of Medicare-covered work, or $311 for those with 30 to 39 quarters. The 2026 Part A inpatient hospital deductible is $1,736 per benefit period.

Enrollees who must buy Part A are also required to hold Part B. If they delay buying Part A past their first eligibility date without a qualifying reason, a Part A late-enrollment penalty applies: the monthly premium rises by 10%, and that higher amount is paid for twice the number of years the person was not enrolled — so two years without Part A means paying the higher premium for four years.

• 2026 Part B standard monthly premium: $202.90.
• 2026 Part B annual deductible: $283.
• 2026 Part A inpatient hospital deductible: $1,736 per benefit period.
• 2026 Part A premium (fewer than 30 quarters): $565 per month.
• 2026 Part A premium (30–39 quarters): $311 per month.
• Part A penalty: premium rises 10%; the higher amount is paid for twice the number of years without enrollment.

What about Part D drug coverage for Americans living abroad?

Part D, Medicare’s prescription drug benefit, carries its own late-enrollment penalty: 1% of the national base beneficiary premium for each month without creditable drug coverage after the IEP ends, adding up to 12% per year. The 2026 national base beneficiary premium is $38.99. That penalty is paid in addition to the plan’s monthly premium and continues for as long as the enrollee has Medicare drug coverage.

CMS guidance effective for contract year 2026 addresses how months lived in a foreign country interact with Part D enrollment gap determinations. The penalty is waived for individuals who maintain creditable drug coverage — coverage that equals or exceeds the actuarial value of Medicare’s defined standard prescription drug benefit — or who qualify for Extra Help.

Sources

1. Medicare.gov — Avoid late enrollment penalties — https://www.medicare.gov/basics/costs/medicare-costs/avoid-penalties — checked 14 October 2026
2. Medicare.gov — Special Enrollment Periods — https://www.medicare.gov/basics/get-started-with-medicare/get-more-coverage/joining-a-plan/special-enrollment-periods — checked 14 October 2026
3. Centers for Medicare & Medicaid Services — 2026 Medicare Parts A & B Premiums and Deductibles — https://www.cms.gov/newsroom/fact-sheets/2026-medicare-parts-b-premiums-deductibles — checked 14 October 2026
4. Medicare.gov — When does Medicare coverage start? — https://www.medicare.gov/basics/get-started-with-medicare/sign-up/when-does-medicare-coverage-start — checked 14 October 2026
5. Medicare.gov — How do I sign up for Medicare? — https://www.medicare.gov/basics/get-started-with-medicare/sign-up/how-do-i-sign-up-for-medicare — checked 14 October 2026
6. Medicare.gov — Medicare costs — https://www.medicare.gov/basics/costs/medicare-costs — checked 14 October 2026
7. Centers for Medicare & Medicaid Services — Original Medicare (Part A and B) Eligibility and Enrollment — https://www.cms.gov/medicare/enrollment-renewal/original-part-a-b — checked 14 October 2026
8. Centers for Medicare & Medicaid Services — CY 2026 Creditable Coverage Period Determinations and the Part D Late Enrollment Penalty, Chapter 4 — https://www.cms.gov/files/document/cy-2026-final-chapter-4-guidance.pdf — checked 14 October 2026