Returning to the US After Years Abroad? 6 Financial Mistakes to Avoid Before You Move Home

Coming Back After Years Abroad

A client I worked with in Singapore took the phone call in early January. Her employer wanted her back in New York by July. Her first instinct, completely reasonable, was to start packing. The instinct that takes longer to arrive is that the six months before her flight would decide more of her US tax picture than the twelve months after it. Returning to the United States isn't simply the reverse of leaving it.

This article explains what I see matter most in the six months before an American repatriates, regardless of the country of return. It is written for US citizens and green card holders who have spent five or more years overseas and are now planning a return. The framework is sequencing, in three phases: decisions made before the plane ticket, decisions that shape the tax year of return, and decisions that land in the first year back. The comparison table is organized by asset archetype rather than by country, because the patterns on re-entry look similar whether the reader is coming from Zurich, London, Dubai, Singapore or Tokyo.

Before the Plane Ticket: Decisions Made Offshore

The instinct to wait until the US return is official and then sit down with a US adviser is understandable. It's also the single biggest missed opportunity I see. Many of the questions worth raising, a foreign pension lump sum, a sale of a foreign home, a foreign-fund holding, state residency, sit in the window when the reader is still a non-resident for US tax purposes. Once US residency restarts, the rules change.

Three decisions come up most often in the offshore window, the last six months before the flight home.

Foreign pension lump sums

Foreign pension lump sums. Lump-sum withdrawals from foreign pension schemes are treated very differently by the US than by the home country. A lump sum taken while still non-US-resident sits in a different US tax posture than one taken after re-entry. Timing, the elements of the payment (contribution-basis vs growth), and the home-country tax treatment all interact. Readers considering a lump-sum election should raise the US timing question with a qualified tax adviser before the election is made.

Foreign mutual funds, unit trusts and ETFs

Foreign mutual funds, unit trusts and ETFs. Pooled foreign-fund holdings typically fall under the Passive Foreign Investment Company (PFIC) regime once the holder becomes a US tax resident, a distinctive tax and reporting treatment that US-domiciled funds avoid. Selling while non-US-resident and rebuilding through US-domiciled funds after return removes the PFIC overlay. The decision is the reader's, but the mechanics are materially easier pre-arrival than post.

The foreign primary residence

The foreign primary residence. The §121 exclusion, which excludes a portion of capital gain on the sale of a primary residence, has its own calendar: generally ownership and use as a primary residence for at least two of the five years preceding sale. Selling the foreign home at the wrong point can miss the window. A sale before re-entry also simplifies currency and reporting. Readers who plan to keep the property as a rental enter a different regime, foreign rental income, depreciation, foreign tax credits, covered in Article 28.

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During the Tax Year of Return: How the Calendar Shapes the US Position

The calendar of the tax year of return does more work than most readers expect.

US tax residency start date. For US citizens, residency never stops. For green card holders who stayed abroad, typically it never stopped either. For dual-status returnees, the start date of the resident period matters and interacts with the substantial presence test. The practical effect: any income event in the year of return lands on one side of the start date or the other, and the two sides are taxed differently.

The PFIC switch. Once US residency is re-established, foreign pooled funds in a foreign brokerage begin to accrue USPFIC consequences. For a reader who didn't liquidate pre-arrival, the year of return is the last clean year to address the holding. PFIC reporting sits on Form 8621 and the choice of regime (mark-to-market, QEF, default §1291) changes the tax outcome materially.

Currency conversions. Foreign-currency cash balances held at the point of return can carry unrealized gain or loss against US dollar basis. Large conversions around the return window are US tax events, taxed as ordinary currency gain or loss. Often overlooked, because it doesn't feel like a tax event.

State residency start date. State and federal residency don't restart on the same day. If a home, driver's license or voter registration has sat in a particular state throughout the overseas period, state residency may already treat the reader as a resident by the time the flight lands. Article 18 of this series covers this in depth.

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After You Land: the First Year Back

The decisions that land in the first year back are lower-leverage than the pre-arrival ones, but still material.

US retirement accounts left behind. Many returnees have a 401(k) or IRA with a former US employer's plan that has been dormant since they left. Re-establishing US residency usually reopens rollover, consolidation and in-service options that had been impractical from abroad. The retirement-account architecture for returnees is close in shape to the one for new arrivals, covered in Article 11.

FBAR and Form 8938 for the year of return. A US person with aggregate foreign financial accounts above the $10,000 threshold at any point in the year must file an FBAR for that year, including the year of return, until the foreign accounts are closed. Form 8938 has its own, higher thresholds that vary by filing status and residence. Covered in Article 15.

Health care coverage. A gap often exists between the last day of employer-provided coverage overseas and the first day of US coverage. Medicare Part B has its own enrollment windows for returning retirees. Not a tax question, but one of the most consistent practical items in the first month back.

Asset Archetype: What Typically Changes on Re-entry

Source: Skybound 2026

Questions To Raise With A Qualified Adviser

For an American planning a return, a shortlist of questions worth raising with a qualified cross-border tax adviser and a financial planner includes:

• Which overseas financial decisions are easier to make before US residency restarts than after?
• For any foreign pooled funds, liquidate pre-arrival or file Form 8621 and make an election post-arrival?
• If I own a foreign primary residence, does my planned sale fall inside the §121 window?
• What is my state of residency on the day I land, and has a high-friction state kept ties throughout the overseas period?
• When should the year-of-return FBAR and Form 8938 be filed, and do my foreign accounts cross the thresholds?
• Does the timing of any foreign trust distribution or foreign-pension lump sum relative to my US residency restart materially change the tax outcome?