PFIC Rules for US Expats: How Foreign Mutual Funds & ETFs Are Taxed (and How to Report Form 8621)

You opened a brokerage account in the country you live in, bought a sensible low-cost index fund, and did exactly what every personal-finance article told you to do. Then someone on r/USExpatTaxes told you it's a PFIC and that you're, in the words of one popular thread, "screwed."

The bad news: they're mostly right that the rules are ugly. The good news: a PFIC is a reporting and tax problem, not a criminal one, and once you understand the three ways it can be taxed, you can usually make a rational decision instead of panicking. This guide walks through what a PFIC is, why nearly every foreign fund is one, how the punishing default regime works, the two elections that can rescue you, and what Form 8621 actually asks for.

What is a PFIC, in plain English?

A Passive Foreign Investment Company (PFIC) is any non-US corporation that meets one of two tests under IRC §1297:

• Income test: 75% or more of its gross income is passive (dividends, interest, capital gains), or
• Asset test: 50% or more of its assets are held to produce passive income.

Read those two tests again and think about what a mutual fund or ETF actually is: a foreign corporation whose entire purpose is to hold income-producing assets. It fails both tests almost by definition. That's why the practical rule among expat advisors is blunt: a non-US pooled investment fund is a PFIC until proven otherwise.

The catch that surprises people is the word foreign. A US-domiciled mutual fund or ETF — even one that invests entirely in foreign stocks — is not a PFIC, because it's a US corporation. An Irish-domiciled (UCITS) or Luxembourg (SICAV) fund holding the exact same stocks is a PFIC. The tax treatment turns on where the fund is incorporated, not where it invests.

Moving to the US (or abroad) with non-US ETFs: how bad is it?

This is the single most-asked PFIC question, and the honest answer is: it depends entirely on which of three regimes your fund falls under. Holding a foreign fund isn't illegal and doesn't, by itself, generate tax — what matters is what happens when the fund makes distributions or you sell it. Before you do anything drastic, find out whether each holding is actually a PFIC and what the default tax would be:

The three ways a PFIC can be taxed

Every PFIC is taxed under one of three regimes. You don't get to ignore this choice — if you make no election, you're in the worst one by default.

1. §1291 — the default ("excess distribution") regime

If you make no election, IRC §1291 applies, and it's designed to remove any benefit of deferral. When you receive an excess distribution (a distribution larger than 125% of the average of the prior three years) or sell the fund at a gain, the tax is calculated by:

1. spreading that gain or excess distribution rateably across every day you held the fund;
2. taxing the portion allocated to prior years at the highest ordinary income rate in effect for each of those years — not your actual rate, and not the favorable long-term capital gains rate;
3. adding an interest charge on the resulting deferred tax, compounded as if it had been owed all along.

The combination — top ordinary rates plus interest — is why long-held PFICs under §1291 can be taxed at effective rates that approach or exceed half the gain. The longer you held it, the worse it gets. There is no long-term capital gains rate and no standard-deduction shelter for this calculation.

2. QEF — Qualified Electing Fund (§1295)

A QEF election is usually the best outcome when it's available. You elect to include your pro-rata share of the fund's ordinary earnings and net capital gain each year, taxed at normal rates — with long-term capital gain keeping its character. No interest charge, no punitive rate.

The problem is practical: a QEF election requires the fund to give you a PFIC Annual Information Statement with the specific figures the election needs. Most non-US retail funds simply don't produce one, because their managers have no reason to cater to US tax law. If your fund provides an AIS (some do, specifically to attract US investors), QEF is often the cleanest path. If it doesn't, this option is off the table.

3. Mark-to-Market (§1296)

A Mark-to-Market (MtM) election is available only for marketable PFIC stock — typically an exchange-traded fund with a readily available market value. Each year you report the increase in the fund's fair market value as ordinary income, whether or not you sold. If the value falls, you can deduct the loss, but only to the extent of prior MtM gains you previously included.

MtM avoids the §1291 interest charge and the dead-weight of the excess-distribution math, at the cost of paying ordinary-income tax on unrealized gains every year. For a publicly traded foreign ETF you intend to hold, it's frequently the most realistic election when QEF isn't available.

Are foreign bank CDs or term deposits PFICs?

Common worry, usually no. A certificate of deposit or term deposit at a genuine foreign bank is a debt instrument with the bank, not shares in a pooled investment corporation — and an active banking business generally isn't a PFIC. What trips people up is the name: some "deposit" or "savings" products sold by insurers or investment platforms are actually wrappers around funds, which can be PFICs (or foreign trusts with their own forms). The test is what you own — a deposit claim against a bank, or shares in an investment vehicle.

How to report a PFIC: Form 8621

PFICs are reported on Form 8621, "Information Return by a Shareholder of a Passive Foreign Investment Company or Qualified Electing Fund." The mechanics that catch people out:

• One form per fund, per year. Ten foreign funds means ten Forms 8621 every year you have a reporting obligation — not one combined form.
• It's where you make and maintain your election. The QEF or MtM election is made on Form 8621, and you keep filing it annually to report income under that election.
• It attaches to your Form 1040. Form 8621 is filed with your annual return, so its deadline follows your 1040 (including the automatic expat extensions).

There is a narrow reporting exception: under the §1298(f) regulations, if the total value of all your PFIC stock is $25,000 or less ($50,000 if married filing jointly) at year-end, and you have no excess distribution or gain to report and aren't making an election, you may not have to file Form 8621 for that year. Above those thresholds, or in any year with a distribution, sale, or election, the form is required.

PFIC, FBAR, and Form 8938: one fund, three filings

The expensive surprise is that PFIC reporting doesn't replace your other foreign-account filings — it stacks on top of them. A single foreign brokerage holding a few PFIC funds can simultaneously trigger:

• an FBAR (FinCEN Form 114) if your foreign accounts together exceed $10,000 at any point in the year;
• a Form 8938 (FATCA) if your foreign financial assets exceed the (higher, for expats) thresholds;
• a Form 8621 for each PFIC inside the account.

Not sure whether your accounts even cross the FBAR and 8938 lines? The free FBAR / Form 8938 threshold checker tells you which of those two you're required to file before you start.

So what should I actually do about my foreign funds?

There's no one answer, but the decision usually comes down to a few questions:

1. Is it actually a PFIC? Confirm each holding rather than assuming. US-domiciled funds are fine; foreign-domiciled pooled funds usually aren't.
2. How long have you held it, and how big is the gain? A small, recently bought position is far cheaper to clean up than a large one held for a decade under §1291.
3. Can you elect? QEF if the fund provides an Annual Information Statement; MtM if it's a marketable listed fund. Elections are most powerful when made early — ideally in the first year you hold the PFIC.
4. Should you exit? Many expats sell PFICs and move to US-domiciled funds or direct holdings to stop the problem from compounding — but selling is itself a §1291 taxable event, so model the cost first.

The worst outcome is doing nothing, leaving §1291 to run, and discovering the bill years later when you sell. Even if you can't fix it instantly, knowing which regime each fund is in lets you stop the damage from growing.

Authoritative sources

• IRS — About Form 8621
• IRS — Instructions for Form 8621
• Legal text — 26 U.S. Code §1291 · §1296 (Mark-to-Market) · §1297 (PFIC defined)

Reader questions that shaped this guide came from real US-expat discussions on r/USExpatTaxes and r/ExpatFIRE. Last reviewed June 2026 — tax rules and thresholds change, so verify current figures before filing.