What Happens to a 401(k) When You Move to the UK?

You can often keep a 401(k) after moving to the UK, but the account should be reviewed before you assume that leaving it untouched is the best answer.

A review should usually consider:

• whether the 401(k) plan allows you to remain invested
• whether the provider can serve a UK resident
• whether a UK address causes account restrictions
• whether online access and trading remain available
• whether the investment options remain suitable
• whether the plan fees are reasonable
• whether employer stock is held inside the plan
• whether a rollover to an IRA is possible
• whether a receiving IRA provider accepts UK residents
• whether withdrawals are needed
• whether early withdrawal penalties could apply
• whether required minimum distributions apply now or later
• whether US tax applies
• whether UK tax applies
• whether the US-UK tax treaty is relevant
• whether beneficiaries are up to date
• whether your future spending is likely to be in dollars, pounds or another currency
• whether you may later return to the US or move elsewhere

IRS guidance says general rules apply to distributions from a 401(k), and that you should review your summary plan description or plan document to understand how to apply for a distribution from your plan.

That means the plan rules matter.

UK residence then adds a second planning layer.

The right answer is not automatically to leave the plan alone, roll it over or withdraw it.

The right answer depends on your personal position.

There are usually several possible routes for a 401(k) after moving to the UK.

The right answer depends on the plan, the provider, your tax position, your citizenship, your UK residence status and your future retirement plans.

Common options include:

• leaving the 401(k) with the existing provider
• changing investments inside the plan
• rolling the 401(k) to an IRA
• rolling to another eligible plan, where possible
• taking withdrawals
• planning future RMDs
• reviewing employer stock
• updating beneficiaries
• coordinating the 401(k) with UK pensions and other assets

Each option has trade-offs.

Leaving the 401(k) in place may be simple, but it may leave you with limited investment choice, higher fees, provider restrictions or old beneficiaries.

Rolling over to an IRA may improve control, but the receiving provider must accept you and the tax position needs review.

Withdrawing may provide access to cash, but it can create US tax, UK tax, withholding, penalty and retirement income issues.

Converting retirement assets to Roth may be attractive in some cases, but can create tax and timing questions.

The decision should be made as part of a wider plan.

A 401(k) is not just an old account.

It may be a major part of your long-term retirement income.

This page is for general information only and does not constitute personalised financial, tax, legal, investment, pension transfer, retirement, estate planning, immigration, UK residence, US tax, UK tax, treaty or currency advice.

401(k) plans, rollovers, withdrawals, RMDs, provider access, investment choice, employer stock, custodian restrictions, US tax, UK tax, treaty treatment, withholding, early distribution penalties, beneficiaries, currency and future relocation depend on personal circumstances and may change.

US tax advice should be taken from a suitably qualified US tax adviser or CPA. UK tax and legal advice should also be taken where relevant.

Financial planning should be coordinated with legal, tax, pension, investment and estate planning advice where appropriate.

Investing involves risk. 401(k), pension, retirement account and investment values can fall as well as rise, and you may get back less than you invest.

Currency movements can affect the value of retirement accounts, transfers, withdrawals and income.