The Roth IRA rules do not change when a US citizen or green-card holder moves abroad. What changes is the income that counts as "compensation" under IRC §219(f)(1) (the statutory definition of compensation for IRA purposes). §219(c) is the separate spousal-IRA rule. Foreign-earned-income exclusion (FEIE), foreign housing exclusion, and tax-treaty tie-breakers can silently zero out a taxpayer's Roth contribution room even when their absolute earnings are high. This pillar walks the rule set from statute down to practical decisions.

The core constraint: compensation, not income

IRC §408A(c)(2) caps a Roth IRA contribution at the lesser of the annual limit and the taxpayer's compensation. Compensation for this purpose is defined by §219(f)(1) and cross-references the definition at §401(c)(2). It includes wages, salaries, professional fees, tips, bonuses, commissions, self-employment net earnings, and alimony received under pre-2019 divorce decrees. It excludes investment income, pension income, Social Security, and — the expat trap — any amount excluded from gross income under IRC §911, which is the foreign earned income exclusion.

The practical consequence: if you use FEIE to exclude your entire foreign salary from US taxable income, you have no compensation for Roth-eligibility purposes and cannot contribute to a Roth IRA at all. The ceiling is zero.

FEIE vs. Foreign Tax Credit: the Roth-eligibility lever

Expats have two main methods for avoiding double-taxation on foreign wages: the foreign earned income exclusion under §911 (up to approximately $132,900 for 2026 per Rev. Proc. 2025-32) or the foreign tax credit under §901. Both reduce US tax; only FTC preserves Roth eligibility.

Why: FTC reduces US tax but does not remove compensation from the §219 definition. FEIE removes compensation from gross income, which means it also removes it from the Roth-eligibility pool. A taxpayer in a high-tax country (France, Germany, the UK, Canada, Australia) typically pays more local tax than the equivalent US tax and so is indifferent between FEIE and FTC from a total-tax standpoint — the FTC fully offsets US tax without needing FEIE. In those jurisdictions, choosing FTC over FEIE preserves Roth eligibility without costing extra tax.

In a low-tax or no-tax country (UAE, Singapore, some Caribbean jurisdictions) FEIE is often the cheaper path because FTC would leave residual US tax on the portion of income above local tax. Those expats face a trade-off: keep FEIE and lose Roth eligibility, or switch to FTC and pay some US tax for the privilege of contributing. For an expat earning $130,000 in a zero-tax jurisdiction, the trade-off math generally favors FEIE because the tax savings vastly exceed the lifetime value of a single year's Roth contribution, but the numbers turn as more years of Roth compounding are left on the table.

The §911 election is revocable but not freely — revoking triggers a five-year lockout unless IRS consent is obtained. This is relevant: a one-time Roth contribution is rarely worth triggering the lockout if FEIE is the right long-term choice.

Housing exclusion and housing deduction

Under §911(c), taxpayers electing FEIE can also exclude a housing cost amount or deduct it (for self-employed). The housing exclusion reduces the amount available as compensation for Roth purposes on top of the earned-income exclusion. An expat with modest wages but large housing costs (common in Singapore, Hong Kong, central London) can end up with more excluded income than they expected. Any salary above the combined exclusion amount remains as compensation and supports a Roth contribution up to that residual.

Self-employed expats: SE tax is a feature, not a bug

A US person operating a sole proprietorship abroad generally owes US self-employment tax under §1401 regardless of the §911 election, unless a totalization agreement assigns social-security liability to the host country (the US has such agreements with about 30 countries). SE tax is assessed on net earnings from self-employment before the FEIE. That matters here because §401(c)(2) defines compensation for self-employed taxpayers using net earnings from self-employment — the same base that carries SE tax — reduced by the §911 exclusion. A self-employed expat in a non-totalization country generally has real SE-taxable net earnings but no Roth-eligible compensation if they fully exclude under §911.

Non-resident alien spouses

A US person married to a non-resident alien faces an election under §6013(g) or §6013(h): treat the NRA spouse as a US resident for the full year (taxed on worldwide income, eligible to file jointly) or file married-filing-separately. The election affects MAGI phase-out for Roth contributions. Married-filing-separately (with any non-zero MAGI, because you lived with your spouse at any time during the year) phases Roth contributions out between $0 and $10,000 under the §408A(c)(3) table — a ceiling so low that most expats in this situation are fully phased out. Electing to treat the NRA spouse as a resident converts the filer to MFJ, which uses the much higher MFJ phase-out range ($242,000–$252,000 in 2026 per IRS Notice 2025-67), but also subjects the NRA spouse's worldwide income to US tax.

The elected-resident MFJ path also lets the NRA spouse contribute to a Roth IRA in their own name, funded out of the couple's combined compensation. The §219(c) rule permits the non-working-or-lower-earning spouse to use the higher earner's compensation for this purpose, subject to the spousal IRA conditions.

Expat retirement accounts in host countries

Employer plans overseas vary in their US tax treatment. UK SIPPs, Australian superannuation, Canadian RRSPs, and Swiss pillar-2 or pillar-3a accounts are each governed by a different combination of US Code, treaty, and IRS guidance:

  • Canadian RRSP. Article XVIII of the US-Canada treaty defers US tax on accrued earnings until distribution. The old Form 8891 filing obligation was eliminated by Rev. Proc. 2014-55. Contributions to an RRSP are not deductible for US tax purposes unless sourced from Canadian-sourced income and the taxpayer qualifies for the treaty deduction.
  • UK SIPP. The Article 17/18 treatment is similar but contested at the edges. IRS guidance treats some SIPP arrangements as foreign grantor trusts with annual Form 3520/3520-A filing.
  • Australian superannuation. Widely treated as a non-qualified foreign pension with ongoing US tax on earnings, a position that generates active practitioner debate but is the conservative default.

Rolling over an overseas plan into a US Roth IRA is almost never permitted by IRC §402 — the sending plan must be a qualified plan under §401(a), which foreign plans generally are not. The rare exceptions involve non-qualified foreign plans that happen to satisfy specific treaty provisions; practitioner review is required.

Reporting

An expat holding a Roth IRA in the US has the ordinary domestic filings (Form 5498 from the custodian, Form 8606 if non-deductible traditional IRA basis exists). An expat holding a foreign retirement account faces additional filings depending on account type and balance: Form 8938 (FATCA) above specified thresholds, FinCEN Report 114 (FBAR) for accounts exceeding $10,000 at any point, and possibly Form 3520/3520-A for arrangements the IRS treats as foreign trusts. The US Roth IRA itself is a domestic account and does not appear on FBAR or 8938.

Country-specific notes

France. High local tax. FTC generally better than FEIE. Roth distributions are taxed by France as ordinary pension income under French domestic law notwithstanding the US treaty — expats living in France in retirement should not expect Roth distributions to remain tax-free at the French level.

UK. Article 17 of the US-UK treaty taxes Roth distributions only in the country of residence, but the UK does not recognize the Roth as tax-free. HMRC guidance (Double Taxation Manual DT19852 area) has historically been ambiguous; practitioners generally advise that Roth distributions may be taxable to UK residents despite being tax-free under US rules.

Canada. Canada recognizes Roth IRAs as pension plans under Article XVIII(1) of the treaty and generally exempts qualified Roth distributions from Canadian tax, provided the US person files a one-time election with CRA on arrival. Contributions made after becoming a Canadian resident are treated differently and may taint the Roth's Canadian tax-free status.

Australia. No treaty exemption for Roth distributions. ATO treats Roth distributions as assessable income. Long-term retirement in Australia generally favors converting Roth positions to other vehicles before becoming an Australian resident.

Decision summary

A US expat who wants to contribute to a Roth IRA has a workable path: elect the foreign tax credit instead of FEIE, establish that sufficient compensation remains after any foreign housing exclusion, and confirm MAGI is below the single-filer or MFJ phase-out. For self-employed expats the path is narrower because of the FEIE-compensation interaction, but a totalization-agreement country combined with FTC sourcing preserves eligibility.

A US expat who plans to retire abroad should separately evaluate how the destination country will tax the Roth at the distribution end. Canada and Germany give favorable treatment; France, UK, Australia, and most of Asia generally do not. That analysis does not change US eligibility today but affects whether aggressive Roth contribution or conversion is actually the right long-term strategy for that individual.

Frequently asked questions

Can a non-resident alien contribute to a Roth IRA?

Only if they have US-source compensation that is taxable to them (not excluded by treaty or effectively-connected-income rules), and only up to that amount or the annual limit, whichever is lower. NRAs without US-source compensation cannot contribute.

Does time abroad count toward the 5-year rule?

Yes. The Roth account's 5-year clock runs continuously from the date of the first contribution to any Roth IRA regardless of where the account holder lives. Physical presence in the US is not required.

I contributed to a Roth while abroad and then learned FEIE zeroed my compensation. What do I do?

The full contribution is an excess contribution subject to the 6% excise under §4973. Withdraw the excess plus its Net Income Attributable before the extended due date of the return to cure it without penalty. File Form 8606 for basis tracking and Form 5329 if any 6% tax applies.

Is a US Roth IRA reportable on FBAR?

No. The FBAR reaches foreign financial accounts. A Roth IRA held at a US custodian is a domestic account even if the beneficial owner lives abroad.

Does a Roth conversion count as compensation for contribution purposes?

No. A conversion is a distribution followed by a rollover. The conversion is taxable income but is not compensation under §219(f)(1) and does not create Roth-eligibility room.

Sources

IRC §§402, 408A, 219, 911, 1411; Treas. Reg. §1.408A-6; Rev. Proc. 2014-55 (Canadian RRSP reporting); Treas. Reg. §1.911-3 (definition of foreign earned income); US-Canada Income Tax Treaty Article XVIII; US-UK Income Tax Treaty Article 17; IRS Publication 54 (Tax Guide for US Citizens Abroad); IRS Publication 590-A.