The short version
You moved to Brazil, you opened an account, and a local advisor put you into a fundo de investimento, an ordinary Brazilian pooled investment fund. It is a completely normal product for a Brazilian. For you, as a US person, it is most likely something the US tax code calls a Passive Foreign Investment Company, a PFIC, and that label triggers one of the harshest regimes in the Internal Revenue Code. A PFIC is a foreign corporation that mostly holds or earns passive investment income, which is exactly what a pooled fund does. The product did nothing wrong. The mismatch is between a normal Brazilian investment and a US rulebook that was written to discourage Americans from holding offshore funds.
This article walks the US law cleanly. It explains the two tests that make a foreign fund a PFIC, why an everyday Brazilian fundo meets them, the three ways the PFIC can be taxed, including the punitive default, and the annual form, Form 8621, that comes with all of it. The planning point at the end is the important one: the cleanest fix is usually to not hold Brazilian pooled funds as a US person, and to plan your portfolio before or early in the move.
What the law actually says (primary authority first)
A PFIC is defined in Internal Revenue Code section 1297. A foreign corporation is a PFIC if it meets either one of two tests in section 1297(a):
- The income test. The corporation is a PFIC if 75 percent or more of its gross income for the taxable year is passive income. The statute reads that the company qualifies if “75 percent or more of the gross income of such corporation for the taxable year is passive income.”
- The asset test. The corporation is a PFIC if the average percentage of its assets that produce passive income, or are held for the production of passive income, is at least 50 percent. The statute reads “the average percentage of assets … which produce passive income or which are held for the production of passive income is at least 50 percent.”
Either test, on its own, is enough. A foreign corporation that trips one of them is a PFIC.
What counts as “passive income” is defined in section 1297(b). It generally means income of a kind that would be foreign personal holding company income under section 954(c), which is the familiar list of investment-type income: dividends, interest, rents, royalties, annuities, and net gains from the sale of property that produces that kind of income.
Two more pieces of the statute matter here. The annual reporting duty is in section 1298(f), which provides that “each United States person who is a shareholder of a passive foreign investment company shall file an annual report containing such information as the Secretary may require.” The form that carries that report, and the elections discussed below, is Form 8621, the Information Return by a Shareholder of a Passive Foreign Investment Company or Qualified Electing Fund.
Why a Brazilian fundo de investimento meets the tests
A fundo de investimento is a pooled vehicle. Investors buy quotas, and the fund uses the pooled money to hold a portfolio of financial assets: government and corporate bonds, equities, money-market instruments, and similar securities. The income it generates is interest, dividends, and capital gains. That is the entire point of the product.
Now lay that against section 1297. A fund whose assets are securities held to produce investment income is, almost by construction, a corporation whose income is overwhelmingly passive and whose assets are overwhelmingly held for the production of passive income. A typical Brazilian fundo therefore meets the 75 percent income test, the 50 percent asset test, or both. It does not take an exotic or aggressive fund to land here. The plain-vanilla fixed-income or multimarket fundo that a bank manager in São Paulo or Florianópolis would recommend to any client is the classic case.
This is the trap. The fund is an ordinary, sensible local product. The US person who owns it has, in the eyes of the Internal Revenue Code, bought into a Passive Foreign Investment Company. I am describing the general structure of these funds, not the financials of any specific fund, and the PFIC determination always turns on a particular fund’s actual income and assets. But the shape of the product is what makes this a named, recurring landmine for Americans in Brazil.
How it works in practice: the three regimes
Once you hold a PFIC, US law gives you three possible ways to be taxed on it. Two of them are elective and usually unavailable for a Brazilian fund in practice. The third is the default, and it is the punitive one.
1. The default: the section 1291 excess-distribution regime. If you make no election, you fall into the regime in Internal Revenue Code section 1291. It is designed to remove the benefit of deferral and then penalize it. It bites on two events: an “excess distribution,” and a gain when you sell the PFIC.
An excess distribution is the portion of the distributions you receive in a year that exceeds 125 percent of the average distributions over the prior three years. When you have an excess distribution, or a gain on sale, the regime works like this:
- The excess distribution (or the gain) is allocated ratably across every day you held the stock. As the statute puts it, the amount “shall be allocated ratably to each day in the taxpayer’s holding period for the stock.”
- The piece allocated to the current year is taxed as ordinary income.
- The piece allocated to each prior year you held the PFIC is taxed at the highest ordinary rate in effect for that year, not your actual rate. Section 1291 computes the tax by “multiplying each amount allocated … to any taxable year … by the highest rate of tax in effect for such taxable year under section 1 or 11.”
- An interest charge is then added on top of that tax, computed as if the tax had been an underpayment owed since that prior year, “by using the rates and method applicable under section 6621 for underpayments of tax for such period.”
Read that again, because the combination is the whole problem. Your gain gets spread back over your holding period, the spread-back portions are taxed at the top rate regardless of your actual bracket, and then an interest charge runs on each piece as though you had owed it for years. A long-held fund with a single large sale can generate a tax-plus-interest bill that consumes a startling share of the gain.
2. The Qualified Electing Fund (QEF) election. Section 1295 lets a shareholder elect to treat the PFIC as a Qualified Electing Fund. Under a QEF election you pick up your pro rata share of the fund’s ordinary earnings and net capital gain each year, taxed in a far more normal way, which avoids the section 1291 penalty mechanics. The catch is the information. To make and maintain a QEF election you need an annual “PFIC Annual Information Statement” from the fund. The Instructions for Form 8621 describe that statement as one that must contain the shareholder’s pro rata share of the fund’s ordinary earnings and net capital gain for the year, or enough information to let the shareholder calculate it. A Brazilian fundo, run for a Brazilian clientele, has no reason to prepare a US-tax statement in this format and generally will not. No statement, no usable QEF election.
3. The mark-to-market election. Section 1296 lets a shareholder who owns “marketable stock” in a PFIC elect to mark it to market each year, including in income the increase in fair market value over basis annually, with gains and losses treated as ordinary. This also escapes the section 1291 mechanics, but it is only available for marketable stock, generally stock that is regularly traded on a qualifying exchange or a fund redeemable at net asset value that meets the rules. Many Brazilian fundos will not cleanly qualify, so this election is frequently off the table too.
So the practical reality for most Americans holding a Brazilian fundo is that the two escape hatches are closed, and they are left in the section 1291 default, which is the regime the other two exist to escape.
The numbers
Two tables. The first is the PFIC definition itself, the tests that pull a Brazilian fundo into the regime. The second compares the three regimes side by side so you can see why the default is the one to avoid.
Table 1. The two PFIC tests (a foreign corporation is a PFIC if it meets EITHER).
| Test | Threshold | What it measures | Authority |
|---|---|---|---|
| Income test | 75 percent or more | Share of the corporation’s gross income for the year that is passive income | IRC 1297(a)(1) |
| Asset test | At least 50 percent | Average share of assets that produce, or are held to produce, passive income | IRC 1297(a)(2) |
| Passive income, defined | n/a | Income of a kind that is foreign personal holding company income (dividends, interest, rents, royalties, gains) | IRC 1297(b); IRC 954(c) |
Table 2. The three PFIC taxation regimes.
| Regime | How income is taxed | Interest charge | Practical availability for a Brazilian fundo | Authority |
|---|---|---|---|---|
| Section 1291 (default, no election) | Excess distributions and gains allocated ratably over the holding period; prior-year pieces taxed at the highest ordinary rate for each year | Yes, added on prior-year pieces using the section 6621 underpayment rates | This is the default; it applies unless you make a valid QEF or mark-to-market election | IRC 1291 |
| Qualified Electing Fund (QEF) | Annual inclusion of your pro rata share of ordinary earnings and net capital gain | No | Usually impractical, because the fund will not provide the required PFIC Annual Information Statement | IRC 1295; Instructions for Form 8621 |
| Mark-to-market | Annual inclusion of the increase in fair market value over basis; ordinary treatment | No | Available only for qualifying “marketable stock”; many fundos do not cleanly qualify | IRC 1296 |
| Annual report on Form 8621 | n/a (this is the filing, not a rate) | n/a | Required for a US shareholder of a PFIC | IRC 1298(f); Form 8621 |
Every row above traces to the controlling Code section or the IRS form and its instructions, listed in the Sources block.
What this means for you
A few practical points.
First, the determination is fact-specific, but the odds are bad. Whether a particular fund is a PFIC depends on that fund’s actual income and assets in the year. That said, the ordinary pooled fundo, holding securities to earn interest, dividends, and gains, is built in the exact shape that meets the section 1297 tests. If a Brazilian advisor recommended a fundo de investimento and you are a US person, you should assume PFIC treatment until a careful look says otherwise.
Second, the default regime is the expensive one, and it is the one you are in unless you affirmatively elect out, which you usually cannot. The section 1291 mechanics, top-rate tax on the spread-back plus an interest charge, are not a footnote. They can turn a modest investment gain into a disproportionate US tax bill. The two ways out, QEF and mark-to-market, both tend to be blocked for a Brazilian fundo, by the missing annual statement and by the marketable-stock limit respectively.
Third, the form is mandatory and separate from any tax. Holding a PFIC generally means filing Form 8621 under section 1298(f), and that filing duty exists on top of the foreign-account and foreign-asset reporting you may already owe. Owning the fund creates a reporting obligation whether or not you sold anything this year.
Fourth, and most useful, this is largely a problem you can avoid by design. The cleanest fix is usually not to hold Brazilian pooled funds as a US person in the first place. Americans who want diversified investment exposure can frequently get it through US-domiciled vehicles that are not PFICs, held in an account that fits their situation, rather than through a local fundo. The time to make that choice is before or early in the move, while the portfolio is still being built, not after years of holding have stretched out the section 1291 spread-back.
If you already hold one
If you read this and realized you have been holding a fundo for a few years, you are in a common spot, and it is workable. The two things worth doing are an accurate determination of whether each holding is in fact a PFIC, and a clear-eyed look at the cost of the section 1291 regime versus the cost and feasibility of any election or an orderly exit. If you also have not been filing Form 8621 in the years you held the fund, that is a reporting gap, and there are structured ways to come into compliance rather than quietly amending, which is covered in the comeback pieces in this series. The point is that this is fixable on your own terms, and earlier is cheaper than later.
Related reading
Companion pieces in The American Expat Tax Lifecycle:
- Clean Up Your Portfolio First: The Pre-Departure Financial and PFIC Checklist. This is the planning piece that pairs with this one, the portfolio decisions to make before you move.
- You Probably Owe Nothing, But Silence Still Costs You. The front-door piece on why most expats owe no US tax but still have forms to file.
- The Foreign Mutual Fund Trap: Why Your Overseas Brokerage Account Can Be a Tax Bomb. The general version of this PFIC problem across any country.
- Retiring to Brazil: The Totalization Agreement That Makes Social Security Work. The Brazil country-track piece on Social Security.
- The Form 3520 Penalty Trap: Foreign Gifts, Trusts, and Inheritances (on Sheepdog Tax Resolution). For the foreign-gift and foreign-trust reporting traps that often sit alongside a PFIC.
- Years Behind on Filing Abroad: The Streamlined Path Most Expats Don’t Know (on Sheepdog Tax Resolution). The structured way back if you are behind on Form 8621 and the other international forms.
For the underlying authorities, see the inline links above to Internal Revenue Code section 1297 (the PFIC definition), section 1291 (the excess-distribution regime), and Form 8621 (the annual return), all listed in the Sources block.
How Sheepdog Tax can help
I am a CPA and Certified Fraud Examiner, and this is a veteran-owned practice. The PFIC problem is one of the most common and most expensive surprises I see for Americans in Brazil, and it is almost always avoidable with a little planning before the portfolio is built.
A good first step is a free Brazil-move portfolio tax-readiness review: a plain look at what you hold or plan to hold, which positions would be PFICs for a US person, what the section 1291 default would cost, and whether a cleaner structure makes sense before or early in your move. Every situation is different, and I do not promise a particular result. What I offer is an honest reading of where you stand and a clear list of what, if anything, to change. To start, reach me at noah@sheepdogtax.com.
Sources (primary authority first, then secondary commentary)
- 26 U.S.C. 1297, Passive foreign investment company (the 75 percent income test and 50 percent asset test; definition of passive income). https://www.law.cornell.edu/uscode/text/26/1297
- 26 U.S.C. 1291, Interest on tax deferral (the excess-distribution regime, ratable allocation, highest-rate tax on prior-year amounts, and the section 6621 interest charge). https://www.law.cornell.edu/uscode/text/26/1291
- 26 U.S.C. 1295, Qualified electing fund (the QEF election). https://www.law.cornell.edu/uscode/text/26/1295
- 26 U.S.C. 1296, Election of mark to market for marketable stock (the mark-to-market election). https://www.law.cornell.edu/uscode/text/26/1296
- 26 U.S.C. 1298, Special rules (subsection (f) annual reporting requirement for US shareholders of a PFIC). https://www.law.cornell.edu/uscode/text/26/1298
- 26 U.S.C. 954, Foreign base company income (subsection (c) foreign personal holding company income, referenced by section 1297(b) to define passive income). https://www.law.cornell.edu/uscode/text/26/954
- IRS, About Form 8621, Information Return by a Shareholder of a Passive Foreign Investment Company or Qualified Electing Fund. https://www.irs.gov/forms-pubs/about-form-8621
- IRS, Instructions for Form 8621 (Rev. December 2025) (who must file; the three regimes; the PFIC Annual Information Statement required for a QEF election). https://www.irs.gov/instructions/i8621
Prepared by Noah Green, CPA, CFE.