Americans living abroad face one of the most complex tax situations of any internationally mobile investor group. The United States taxes its citizens on worldwide income regardless of where they live — and one of the most technically demanding aspects of US international tax law is the treatment of Passive Foreign Investment Companies, universally known as PFICs.
For US citizens and Green Card holders (and those married to them), investing in seemingly ordinary international funds — UCITS ETFs in Ireland, Luxembourg SICAVs, UK unit trusts — can trigger the PFIC rules. The default tax treatment under those rules is extraordinarily punitive. Yet millions of American expats invest in UCITS ETFs without understanding their exposure.
This article explains the PFIC rules, their application to ETFs and mutual funds, the available elections that can make the situation manageable, and why this matters so much in practice.
What Is a PFIC?
A Passive Foreign Investment Company is any non-US corporation that meets either of two tests:
- Income test: At least 75% of its gross income is "passive" (dividends, interest, rents, royalties, gains on property)
- Asset test: At least 50% of its assets are held to produce passive income
By these definitions, virtually every non-US investment fund — including any UCITS ETF, Irish-domiciled fund, Luxembourg SICAV, UK unit trust, or offshore hedge fund — is a PFIC. The fund earns interest, dividends, and capital gains — all passive income. Its assets are financial instruments held to produce passive returns. It fails both tests comprehensively.
The critical point: PFIC status applies regardless of what the fund holds. A UCITS ETF tracking the MSCI World is a PFIC. A UCITS ETF tracking global government bonds is a PFIC. An offshore fund holding private equity is a PFIC. Even a money market fund domiciled outside the US is a PFIC.
This catches many US expats who think they are making sensible investment decisions by using UCITS ETFs (as advised for non-US investors) without realising they have created a significant US tax problem.
The Default PFIC Tax Treatment: Punitive
If a US person holds a PFIC and makes no election (see below), the default "excess distribution" rules apply. These are designed to be punitive — the legislation assumes that the investor was trying to defer US tax by using an offshore fund.
Under the excess distribution rules:
- Any gain on disposal of the PFIC, plus any "excess distributions" received during the holding period, is taxed at the highest ordinary income tax rate applicable in each year the PFIC was held (regardless of the investor's actual rate)
- An interest charge is applied to the tax, calculated as if the tax should have been paid rateably over the holding period — the current interest rate for underpayments compounds daily
- No preferential capital gains rates apply — even long-term gains are taxed as ordinary income
- No tax treaty relief is available for PFIC gains under many treaties
The result: a long-term investment in a UCITS ETF, with a substantial accumulated gain, can result in a tax and interest bill substantially exceeding what a US resident investor would pay on an equivalent US-registered fund. In some scenarios, the effective tax rate on PFIC gains can exceed 60% when the interest charge is included.
This is not a theoretical concern. US tax attorneys regularly encounter clients who have held UCITS ETFs for decades and discover the PFIC consequences only when they seek to sell or when FBAR/FATCA reporting obligations bring the positions to light.
The Three Elections That Avoid the Worst
Congress recognised that the default PFIC rules are excessively harsh for ordinary investment activity and provided three elections that can substantially improve the tax treatment:
1. Mark-to-Market Election (MTM)
Under the mark-to-market election, the investor annually reports any increase in value of the PFIC as ordinary income, even though no sale has occurred. Decreases in value are deducted against previous MTM income (not net capital losses).
Benefits: The punitive interest charge is eliminated; gains are taxed annually at ordinary income rates rather than being deferred and then heavily penalised
Drawbacks: Ordinary income tax rates apply (up to 37% federal), not preferential capital gains rates. Complex annual reporting is required (Form 8621 for each PFIC). Unrealised gains are taxed each year even if the investment has not been sold.
The MTM election is available only for "marketable securities" — ETFs listed on a recognised exchange qualify. Many private funds do not.
2. Qualified Electing Fund (QEF) Election
Under the QEF election, the investor includes their pro-rata share of the fund's ordinary earnings and net capital gains in income annually, taxed at ordinary income and capital gains rates respectively.
Benefits: If the election is made from the first year of PFIC ownership, the investor's eventual gain is taxed at preferential capital gains rates; the punitive interest charge is eliminated.
Drawbacks: Requires the fund to provide "PFIC Annual Information Statements" disclosing its ordinary earnings and net capital gains per share. Most UCITS ETF providers do not provide this information and cannot feasibly do so for the US investor minority. In practice, the QEF election is rarely available for widely-held UCITS ETFs.
3. Section 1291 Purging Election (Less Common)
Available in limited circumstances to purge the PFIC "taint" when an entity changes its status. Rarely used as a first-step election.
Practical Implications for US Expats
The practical reality for most US citizens living outside the US is this:
UCITS ETFs and most non-US funds are PFICs. Investing in them without proper planning creates the PFIC problem.
The MTM election is available for exchange-listed funds. For an American living in Germany, the UAE, or Singapore who holds UCITS ETFs, making the MTM election annually (Form 8621) is the standard management approach. It adds compliance burden but eliminates the punitive interest charge.
US-listed ETFs are not PFICs. US-registered investment companies (ETFs regulated under the Investment Company Act of 1940) are excluded from the PFIC rules. VTI, IVV, and similar US ETFs are not PFICs.
This creates the central dilemma for US expats:
- US-listed ETFs: Not PFICs, but not accessible on many international platforms, and may create US estate tax issues (though the estate tax exemption applies to US persons)
- UCITS ETFs: Accessible everywhere, no US estate tax issues for US persons — but PFICs, requiring annual MTM elections and Form 8621 filings
The optimal solution depends on the investor's specific situation:
- US expats using a US custodian: Holding US-listed ETFs through Fidelity, Schwab, Vanguard, or similar US brokers eliminates PFIC issues. Some US custodians continue to serve clients living abroad; others close accounts on notification of an overseas address.
- US expats who cannot access US custodians: MTM elections for UCITS ETFs held through an international platform is the standard approach. The annual compliance burden is real but manageable with a US-qualified tax preparer.
- Green Card holders considering relinquishment: Giving up a Green Card triggers a deemed sale of all worldwide assets at fair market value for those above specified thresholds — the "covered expatriate" exit tax rules. This requires careful planning.
The FBAR and FATCA Reporting Layer
In addition to the PFIC rules, US persons holding UCITS ETFs and other non-US financial accounts face:
FBAR (FinCEN 114): Required for US persons holding non-US financial accounts with aggregate values exceeding $10,000. The annual reporting deadline is 15 April (with automatic extension to 15 October). Penalties for wilful non-compliance are severe — up to $100,000 per violation or 50% of the account value.
FATCA (Form 8938): Higher thresholds than FBAR ($50,000 for single filers in the US; $200,000 for those abroad). Reports specified foreign financial assets. Penalties for non-compliance also significant.
These reporting requirements are separate from the PFIC rules. A US expat holding UCITS ETFs in an Irish brokerage account must file FBARs and Form 8938 as well as managing the PFIC election position.
The Form 8621 Filing Requirement
Every PFIC holding requires a separate Form 8621 annual filing with the US tax return. A US expat holding five UCITS ETFs must file five Form 8621s annually, each requiring specific data from the fund. For accumulating ETFs, the data needed for the MTM calculation must be sourced from the fund's NAV history.
This complexity is why US expat financial planning is a specialist area, and why US citizens living abroad are generally best served by advisers familiar with both US tax law and the investment landscape in their country of residence.
Common Mistakes US Expats Make
Holding UCITS ETFs without making a timely election: The MTM election must be made in the first year of PFIC ownership. Missing the first-year election requires a "purging election" that is more complex and can involve paying tax on accrued gains.
Not knowing which funds are PFICs: Many clients assume that products called "ETFs" or "funds" available at their bank are straightforward investments. The PFIC taint applies regardless of the product name.
Holding UCITS ETFs inside an offshore bond: Offshore investment bonds can be attractive wrappers for non-US investors, but for US persons, the underlying PFIC investments inside the bond do not escape PFIC rules. The bond wrapper does not solve the PFIC problem.
Assuming the issue has gone away on renouncing citizenship: Renouncing US citizenship triggers exit tax rules. Post-renunciation, former US persons are no longer subject to PFIC rules on new investments, but gain accrued before renunciation may still be subject to exit tax.
Compliance Caveats
The PFIC rules are among the most technical areas of US international tax law. This article provides a general overview and does not constitute personal US tax advice. The rules are complex, change over time, and interact with individual circumstances, treaty positions, and state tax obligations. US citizens and Green Card holders living abroad should engage a qualified US tax adviser — ideally one familiar with the country in which they reside — before making any investment decisions. Penalties for PFIC non-compliance can be severe.
How Global Investments Can Help
At Global Investments, we work with specialist US-qualified advisers who understand the PFIC rules, FBAR and FATCA obligations, and the practical challenge of constructing investment portfolios for Americans living abroad. We can help identify PFIC exposures in existing portfolios, advise on the appropriate elections and reporting, and structure new investments to manage US tax compliance as efficiently as possible. Contact us to arrange a consultation.
This article is for general information only and does not constitute financial, legal or tax advice. Rules, prices and regulations change; verify current requirements with a qualified adviser before acting.