Most of this site covers investing in US stocks and ETFs from abroad through an ordinary brokerage account - a fundamentally different arrangement from a 401(k) or IRA, which are US tax-advantaged retirement accounts governed by their own, more restrictive eligibility rules built around US employment, not general market access. Whether a non-US citizen can access either depends less on citizenship itself than on residency status and, critically, on having the right kind of US-source income - a distinction that trips up a lot of otherwise well-informed international investors.
The Key Distinction: Earned Income, Not Investment Income
This is the single most important thing to understand, and the point most likely to disappoint an international investor researching this topic: eligibility for both 401(k) and IRA contributions is built around having US-source earned income - wages from a job, self-employment income - not investment income from a brokerage account. Simply holding US stocks and ETFs, however substantial the portfolio, does not by itself create eligibility to contribute to either account type. These are retirement-savings vehicles tied to employment income, not general-purpose tax-advantaged investment accounts open to anyone with US securities. This is a genuinely different qualifying criterion from anything else covered on this site, which otherwise focuses almost entirely on portfolio investment rather than employment-based benefits.
401(k): Tied to a US Employer
Non-US citizens - including nonresident aliens, green card holders, and temporary work visa holders - are generally eligible to contribute to a 401(k) if their US employer offers one and they earn US-source wages. This is fundamentally an employment benefit, not a citizenship-based one: the deciding factor is whether you work for a US employer offering the plan, not your passport or immigration status beyond having valid work authorization.
Employer matching contributions - where an employer contributes additional funds matching some portion of the employee’s own contribution, a common 401(k) feature - generally apply to eligible non-US employees the same way they apply to US citizens, since matching is a function of plan participation, not immigration status. Vesting schedules (the timeline over which an employee gains full ownership of employer-matched contributions) also apply identically regardless of citizenship, following whatever schedule the specific plan document establishes.
A practical note: some 401(k) plan providers exclude nonresident aliens specifically in their plan documents, even when the underlying law would otherwise permit participation - this varies by employer and plan administrator, and is worth confirming directly with your employer’s HR or benefits team rather than assuming eligibility either way. This exclusion, where it exists, is typically a plan-design choice by the employer or administrator rather than a legal requirement, which means the answer genuinely differs from one US employer to another.
IRA: More Restrictive for Nonresident Aliens
Traditional IRA: a nonresident alien can contribute only if they have US-source earned income - most commonly from a US-based job reported on a W-2. There is a specific structure sometimes called a Non-Resident Alien IRA, which functions as a Traditional IRA opened by an NRA with qualifying US earned income, requiring the filing of Form 1040-NR to report US income and, where applicable, claim any available deductions.
Roth IRA: a genuinely unsettled area, not a flat “closed door.” Some nonresident aliens with qualifying US-source earned income have opened and contributed to Roth IRAs while filing as NRAs on Form 1040-NR - custodian and practitioner practice varies here more than for the Traditional IRA path. Becoming a US tax resident (through the substantial presence test, or an election such as filing jointly with a US-resident spouse under IRC §6013(g)) is the clearer, more commonly cited route, but treating it as the only route overstates how settled this actually is. If a Roth IRA specifically matters to your planning, this is worth confirming directly with both a cross-border tax advisor and the prospective IRA custodian - practices differ enough between providers that a blanket answer isn’t reliable.
What doesn’t qualify: investment income, dividends, or capital gains from your existing US brokerage account do not count as the kind of earned income either account type requires for contribution eligibility - a source of genuine confusion given how much of this site otherwise focuses on exactly that kind of investment income.
Contribution limits for both account types follow the same annual IRS-set figures that apply to US citizens and residents - there’s no separate, reduced limit specifically for nonresident aliens who do qualify based on earned income, though the practical annual limit changes periodically and should be confirmed against current IRS figures rather than assumed fixed.
Social Security Tax (FICA) Withholding on Qualifying Wages
US-source wages that make you eligible for 401(k) or IRA contributions are also generally subject to FICA (Social Security and Medicare) tax withholding, the same payroll tax that applies to US citizen employees, unless a specific exception applies (certain visa categories, such as some student and exchange visitor visas, carry FICA exemptions for a defined period). This is a separate mechanism from the investment-income withholding covered throughout the rest of this site’s taxes category, and it’s worth understanding as part of the full picture if you’re evaluating a US employment opportunity specifically - the totalization agreement question this raises for eventual benefit eligibility is covered in more depth in our Social Security totalization guide.
What Happens to Contributions Already Made if You Leave the US
If you contributed to a 401(k) or IRA while working in the US and later leave - a genuinely common situation for the internationally mobile investors this site serves - the account itself does not need to be liquidated immediately. Standard options include leaving the funds in the existing plan (if the provider permits non-resident account holders, which not all do), rolling over to an IRA, or withdrawing the funds entirely - each with different tax consequences, and this site’s what happens to your brokerage account when you retire abroad covers the parallel question for an ordinary brokerage account, though the retirement-account-specific mechanics differ meaningfully from a standard brokerage account’s.
Withdrawals by a nonresident alien from these accounts can face withholding up to 30%, reduced if a specific tax treaty provision applies to retirement account distributions specifically - not all treaties address retirement account distributions identically to how they address ordinary dividend income, so confirm your specific country’s treatment rather than assuming the standard dividend treaty rate automatically applies to a 401(k) or IRA distribution as well. Early withdrawal penalties (a standard 10% additional tax for distributions taken before the plan’s designated retirement age, subject to specific exceptions) generally apply to a nonresident alien the same way they’d apply to a US citizen taking an early distribution, on top of whatever withholding applies.
Frequently Asked Questions
Can I roll over a 401(k) into an IRA after leaving my US employer, even as a nonresident alien living abroad? Generally yes, mechanically - a rollover from an employer plan into an IRA is a standard option regardless of citizenship, though practical access depends on finding an IRA custodian willing to maintain an account for a nonresident living abroad, which isn’t universal among providers.
Does having a 401(k) or IRA create any additional US tax filing obligation beyond what my brokerage account already requires? Potentially yes - depending on your specific situation and whether you’re taking distributions, additional forms beyond the standard 1040-NR filing covered elsewhere on this site may be required; confirm with a cross-border tax advisor familiar with retirement account reporting specifically.
If I never worked in the US, is there any path to 401(k) or IRA access at all? Generally no - without qualifying US-source earned income at some point, neither account type becomes available, regardless of how large your existing US brokerage portfolio is. The standard us-investing brokerage account route remains the only relevant path for building US market exposure without US employment history.
Does a spouse’s US employment create IRA eligibility for a non-working spouse? US tax law does provide for spousal IRA contributions in some circumstances for US taxpayers filing jointly, based on one spouse’s earned income covering both spouses’ contributions - but this generally requires both spouses to be US taxpayers, meaning it doesn’t straightforwardly extend to a nonresident alien spouse the way it might for a US citizen couple. Confirm this specific scenario with a tax advisor rather than assuming it applies.
401(k) and IRA Access for Non-US Citizens Explained - Your Action List
- Confirm you have qualifying US-source earned income (wages or self-employment) before assuming 401(k) or IRA eligibility - investment income from your brokerage account does not count
- If employed by a US company, confirm directly with HR/benefits whether the specific 401(k) plan excludes nonresident aliens, since this varies by employer
- Understand that Roth IRA access for nonresident aliens is unsettled and provider-dependent, while Traditional IRA may be available with qualifying earned income
- Check whether FICA withholding applies to your specific visa category and qualifying wages
- If you have existing 401(k) or IRA balances and are leaving the US, research your options (leave in place, roll over, withdraw) and their tax consequences before deciding
- Confirm the applicable withholding rate on any retirement account distribution with your specific country’s treaty, since it may differ from the standard dividend withholding rate
The Short Version of 401(k) and IRA Access for Non-US Citizens Explained
401(k) and IRA access for non-US citizens hinges on US-source earned income and residency status, not citizenship or the size of an existing US investment portfolio. For the many international investors on this site whose only US connection is a brokerage account, these retirement-specific vehicles are generally not accessible - the standard us-investing brokerage account route remains the relevant path for building US market exposure, with the retirement-account path only opening up for those with genuine US employment history.
This piece covers 401(k) and IRA Access for Non-US Citizens Explained in general terms and is not financial advice. 401(k) and IRA eligibility rules are governed by the IRS and individual plan documents, and can vary and change. An adviser should confirm how this applies to you specifically.
Related Guides
- What Happens to Your US Brokerage Account When You Retire Abroad
- Social Security Totalization Agreements and Investment Income
- US Dividend Withholding Tax for Foreign Investors
