Somewhere between booking the one-way flight and selling the couch, every future expat asks: “What do I do with my 401(k)?” The good news: usually very little — and the most expensive answer is the one that feels most decisive.
Option 1: Cash it out (please don’t)
Closing retirement accounts “to keep things simple” triggers ordinary income tax on the whole balance, typically a 10% early-withdrawal penalty if you’re under 59½, possibly a bracket jump from the lump recognition — and the permanent loss of decades of tax-advantaged compounding. On a $300,000 balance the immediate cost can run to six figures. Moving abroad is not an emergency; don’t price it like one.
Option 2: Leave the 401(k) where it is
Perfectly legal from abroad. Former employees can keep 401(k)s with the old plan indefinitely (small balances excepted). Considerations: limited investment menus, plan fees, and administrators who are occasionally awkward about foreign addresses. Fine as a holding pattern; rarely the best permanent home.
Option 3: Roll to an IRA (the usual winner)
A direct rollover to an IRA at an expat-friendly brokerage is tax-free when done properly (trustee-to-trustee — never take the cheque yourself) and gives you full investment control from anywhere. The critical sequencing point: open the IRA while you still have a US address. Doing the same rollover after you’ve moved ranges from awkward to impossible depending on the custodian — a classic “do before you fly” item on the Financial Relocation Roadmap.
Contributing from abroad
New 401(k) contributions generally end with your US employment. IRA contributions can continue — but only with US-taxable compensation, which the Foreign Earned Income Exclusion can accidentally wipe out. That trap (and the Foreign Tax Credit fix) has its own article: Roth IRA and retirement contributions abroad.
Withdrawals abroad: the two-country question
When you eventually draw the money, two systems weigh in:
- The US side works as always: traditional withdrawals are ordinary income, Roth qualified withdrawals are tax-free, required minimum distributions start on schedule wherever you live.
- Your new country may see things differently. Some countries respect the US retirement wrapper via treaty; others tax withdrawals as ordinary income regardless of Roth status; a few have lump-sum quirks that punish or favour particular strategies. The same IRA produces meaningfully different retirement income in Lisbon vs Paris vs Berlin — worth knowing before choosing the destination, not after.
Two mistakes we see constantly
- The indirect rollover fumble: taking a distribution cheque intending to redeposit within 60 days — from abroad, with international mail and time zones. Use direct transfers only.
- Roth conversions without treaty math: converting traditional to Roth can be brilliant or pointless depending on whether your future country will even honour Roth’s tax-free status. Model it both ways first — with a professional who knows your treaty (that’s Advisor Matching territory).
The bottom line
For most movers the answer is: roll the 401(k) into an IRA at an expat-friendly custodian before departure, keep investing in US-domiciled funds, and plan withdrawals around your destination’s treaty. Simple — when sequenced right. Sequencing it is literally our job: start with a free Money Check.
This article is general information, not tax or investment advice. Rollover and treaty rules are fact-specific — take professional advice before moving money.