If you move abroad, your 401(k) stays in the United States: no plan administrator will transfer it into a foreign retirement system, and the account keeps operating under US rules. What changes is the tax treatment of distributions and the paperwork the plan needs from you. US citizens and green card holders continue to owe federal income tax on worldwide income, so 401(k) withdrawals are taxed the same as if you had never left.1Internal Revenue Service. Reporting Foreign Income and Filing a Tax Return When Living Abroad If you give up your green card or otherwise become a nonresident alien, distributions are subject to a flat 30% federal withholding unless a tax treaty with your new country lowers the rate.2Office of the Law Revision Counsel. 26 USC 1441 – Withholding of Tax on Nonresident Aliens
The Account Itself Stays in the US
Most plans let you leave your balance with a former employer indefinitely, provided your vested balance is at least $5,000. Below that threshold, the employer can force the money out.3Internal Revenue Service. Retirement Topics – Termination of Employment
The practical problem is the address on file. Many brokerages flag accounts tied to a foreign residential address and respond by restricting trading, freezing new investments, or in some cases closing the account. You can typically still sell holdings or take withdrawals, but you may not be able to make new investments. Using a US mailing address belonging to a family member you trust preserves full account functionality and makes sure you receive plan notices about fee changes, amendments, and required actions.
Rolling the balance into an IRA is the other common route and gives you a wider set of investments and more control from overseas. A direct rollover from the plan to the new IRA custodian avoids the mandatory 20% federal withholding that applies when a distribution is paid to you directly.4Office of the Law Revision Counsel. 26 USC 3405 – Special Rules for Pensions, Annuities, and Certain Other Deferred Income If instead you take an indirect rollover, you have 60 days to deposit the full original amount into an IRA, including the withheld 20% (which you would have to cover out of pocket). Miss that window and the whole distribution is treated as taxable income, with a possible early withdrawal penalty on top.5Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
The catch with rollovers is finding a custodian willing to hold an IRA for a customer with a foreign address. Many large firms refuse or close such accounts because of the compliance burden. Some brokerages specialize in serving Americans abroad and have the infrastructure for cross-border reporting.
If You Remain a US Citizen or Green Card Holder
Nothing about your federal tax picture on the 401(k) changes because you moved. Distributions go on your Form 1040 and are taxed at ordinary income rates based on your total worldwide income.1Internal Revenue Service. Reporting Foreign Income and Filing a Tax Return When Living Abroad The plan administrator treats you like any domestic participant, and you keep a Form W-9 on file certifying your Social Security number and US tax status. Without a valid W-9, the administrator may apply 24% backup withholding.6Internal Revenue Service. 2026 Publication 15
A common and expensive misconception: the Foreign Earned Income Exclusion does not cover 401(k) withdrawals. The statute excludes pensions and annuities from the definition of earned income, so the exclusion applies only to wages, salary, and self-employment income from personal services.7Office of the Law Revision Counsel. 26 USC 911 – Citizens or Residents of the United States Living Abroad8Internal Revenue Service. Foreign Earned Income Exclusion
If your new country also taxes the distribution, the Foreign Tax Credit on Form 1116 lets you offset foreign taxes paid, dollar for dollar, against your US liability on that same income. That is the main mechanism for avoiding double taxation, though the credit cannot exceed your actual US tax on the distribution.9Internal Revenue Service. The Taxation of Foreign Pension and Annuity Distributions
If You Become a Nonresident Alien
If you are not a US citizen and you give up your green card or stop meeting the substantial presence test, you become a nonresident alien for tax purposes. Distributions from your 401(k) are then subject to a flat 30% federal withholding at the source, deducted before the money reaches you.2Office of the Law Revision Counsel. 26 USC 1441 – Withholding of Tax on Nonresident Aliens
Tax treaties with dozens of countries can reduce that rate, and some eliminate US tax on retirement distributions at the source entirely. Others cut it to 15%. The specific outcome depends on the pension article of the treaty between the United States and your new country.10Internal Revenue Service. Publication 519 – US Tax Guide for Aliens
To claim a treaty rate, file Form W-8BEN with your plan administrator before any distribution is paid. The form certifies your foreign status, identifies your country of residence, and cites the treaty article you are invoking. You will need the tax identification number issued by your new country.11Internal Revenue Service. About Form W-8 BEN – Certificate of Foreign Status of Beneficial Owner for United States Tax Withholding and Reporting A W-8BEN stays valid from the date it is signed through the last day of the third calendar year after that. A form signed in June 2026, for example, expires December 31, 2029, and the withholding reverts to 30% until you file a new one.12Internal Revenue Service. Instructions for Form W-8BEN
Early Withdrawal Penalty and Its Exceptions
Taking money out before age 59½ triggers a 10% additional tax on top of ordinary income tax on the distribution.13Office of the Law Revision Counsel. 26 USC 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts Combined with the mandatory 20% withholding on a lump-sum payout and any additional income tax owed at filing, an early cash-out can eat a third or more of the balance.
Several exceptions remove the 10% penalty (the distribution is still taxed as income). The ones most relevant to someone leaving a job for an overseas move:14Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
- Separation from service during or after the calendar year you turn 55, for the plan of the employer you separated from. This is the “Rule of 55” and does not apply to IRAs or plans from earlier employers.
- Substantially equal periodic payments over your life expectancy, taken at least annually. Once started, the schedule generally cannot change for five years or until you reach 59½, whichever is later.
- Total and permanent disability.
- Unreimbursed medical expenses exceeding 7.5% of your adjusted gross income.
- Up to $22,000 for qualified individuals affected by a federally declared disaster.
Roth 401(k) Balances Abroad
Qualified Roth 401(k) or Roth IRA distributions are tax-free and penalty-free under US rules once the account has been open at least five tax years and you are at least 59½ (or meet another qualifying event such as disability or death).15Internal Revenue Service. Publication 590-B – Distributions From Individual Retirement Arrangements Your new country may not recognize that status. Not every US treaty addresses Roth accounts, and some countries tax any withdrawal from a retirement account as income regardless of how it was funded. Because there is no US tax on a qualified Roth distribution, the Foreign Tax Credit has nothing to offset, so any foreign tax owed becomes a net cost. Check the treaty language for your country before taking Roth distributions.
Required Minimum Distributions Still Apply
Living overseas does not pause RMDs. If you were born before 1960, you must begin taking RMDs from a traditional 401(k) or IRA by April 1 of the year after you turn 73. The starting age rises to 75 for those born in 1960 or later, beginning in 2033.16The Thrift Savings Plan. SECURE 2.0 and the TSP Missing an RMD carries a 25% excise tax on the shortfall, dropping to 10% if you correct it within two years.17Internal Revenue Service. Retirement Topics – Required Minimum Distributions (RMDs) Roth 401(k) balances at an employer are subject to RMDs, but rolling to a Roth IRA eliminates them during your lifetime. Automatic distributions or calendar reminders keep time zones and international mail delays from causing a missed deadline.
Your Old State May Still Want Its Cut
Federal tax is only part of the picture. If your last US address was in an income-tax state, that state may keep treating you as a resident and tax your 401(k) distributions after you leave the country. Nine states have no individual income tax, so former residents of those states owe nothing at the state level on retirement withdrawals. Elsewhere, it depends on how the state defines domicile.
States that scrutinize departures typically look at whether you still own or maintain a home there, hold a driver’s license or voter registration, have close family in the state, keep local bank accounts, or spend significant time there on return visits. Before leaving, take deliberate steps to end domicile: surrender the driver’s license, close local bank accounts, cancel voter registration, and sell or rent out any property. Keep documentation, because some states audit former residents who claim to have moved abroad but kept ties.
New Foreign Accounts Trigger Reporting
Moving abroad usually means opening bank accounts in your new country, and those accounts create reporting obligations that are separate from your retirement plan. Your US-based 401(k) or IRA is a domestic account and does not count toward these thresholds.
FBAR (FinCEN Form 114)
If the combined value of your foreign financial accounts exceeds $10,000 at any point during the year, you must file a Report of Foreign Bank and Financial Accounts with FinCEN.18FinCEN.gov. Report Foreign Bank and Financial Accounts The FBAR is filed electronically, due April 15, with an automatic extension to October 15 that requires no request.19Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR) The $10,000 threshold is aggregate across all foreign accounts, not per account.
FATCA (Form 8938)
Form 8938 is filed with your annual tax return. Unmarried taxpayers living abroad file if foreign assets exceed $200,000 on the last day of the year or $300,000 at any point during the year. Married couples filing jointly have thresholds of $400,000 and $600,000.20Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets? Penalties for either failure are steep, including civil fines that can exceed $16,000 per FBAR report for non-willful violations and $10,000 per return for Form 8938 omissions, with additional exposure for willful conduct.
Practical Costs of Running the Account From Overseas
Taxes and penalties are not the only drain on the balance. A few operating costs are worth planning around.
- Currency conversion. Banks typically add a 2–5% markup above the mid-market rate when converting dollars to local currency. On a $50,000 annual distribution, that is $1,000 to $2,500.
- Wire transfer fees. International wires usually run $35 to $50 from the sending bank, plus possible intermediary bank fees of $15 to $30. Monthly distributions multiply the cost quickly compared with an annual withdrawal.
- Expat tax preparation. A US return with foreign income reporting, FBAR compliance, and Form 8938 generally runs $450 to $1,600 depending on complexity.
Consolidating into fewer, larger withdrawals and comparing total transfer cost (not just the advertised fee, but the exchange rate margin) can save meaningful amounts over time.