How to Identify a PFIC in Your Portfolio: A Practical Guide for US Taxpayers

If you are a US citizen, green card holder, or resident alien with investments in foreign funds, foreign banks, or non-US financial products, there is a high probability that at least one of those investments qualifies as a Passive Foreign Investment Company (PFIC) under US tax law, and you may not know it yet. PFICs are among the most tax-punitive investment categories in the IRS code. The penalties for getting it wrong, including punitive tax rates, compounding interest charges, and failure-to-file penalties, make early identification not just useful but essential.

Key Takeaways

• What is a PFIC? A foreign corporation that meets either the 75% passive income test or the 50% passive asset test under IRC Section 1297
• Who is affected? Any US person, citizen, green card holder, or resident alien who holds shares in a qualifying foreign entity
• What are the two tests? The Income Test (75% of gross income is passive) and the Asset Test (50% of assets produce passive income)
• What investments are commonly PFICs? Foreign mutual funds, non-US ETFs, foreign insurance products, and certain foreign holding companies
• What is the reporting form? Form 8621, one per PFIC, per year, even if no distribution or sale occurred
• What are the three tax regimes? Excess Distribution (default, most punitive), Mark-to-Market election, and Qualified Electing Fund (QEF) election

The PFIC rules were introduced in the Tax Reform Act of 1986 to prevent US taxpayers from deferring tax indefinitely by routing passive investment income through foreign corporate structures. Before these rules existed, a US investor could place money in a foreign fund, allow income to compound tax-free inside the fund for decades, and pay only a single capital gains tax upon eventual sale. The PFIC regime eliminates that deferral advantage, and then some.

What makes PFIC rules uniquely challenging in 2026 is that the investments most likely to trigger them are not exotic offshore tax shelters. They are ordinary financial products that US expats, immigrants, and internationally mobile professionals encounter in everyday life: the mutual fund held at a local bank in Germany, the unit trust opened before relocating from Singapore, the insurance-linked investment product purchased in the UK, or the index fund held in a brokerage account in India. These products are entirely legal and common in their home markets. Under US tax law, they are treated as PFICs, and the consequences of holding them without proper identification and reporting can be severe.

What Is a PFIC?

Under IRC Section 1297, a foreign corporation is a PFIC if it meets either of two tests for its tax year:

The Income Test: 75% Rule

A foreign corporation qualifies as a PFIC if 75% or more of its gross income for the tax year is passive income. Passive income for PFIC purposes includes:

• Dividends
• Interest
• Rents and royalties (with limited exceptions for active businesses)
• Annuities
• Net gains from sales of property that produces passive income
• Net gains from commodity transactions
• Net foreign currency gains
• Income equivalent to interest from certain notional principal contracts

The keyword is gross income, not net income. A foreign fund with $100 in total revenue, of which $76 is interest and dividends and $24 is active business income, meets the income test even if its net profit is entirely attributable to the active portion.

The Asset Test: 50% Rule

A foreign corporation qualifies as a PFIC if at least 50% of the average percentage of its assets (by value, measured quarterly) are assets that produce passive income or are held for the production of passive income. Passive assets include:

• Cash and cash equivalents
• Bonds, notes, and fixed-income securities
• Stocks of other corporations (unless active business look-through rules apply)
• Mutual fund holdings and investment interests
• Real estate interests not used in an active trade or business

The asset test is applied on a gross basis. Liabilities secured by assets are not netted out. A foreign company with $100 million in total assets of which $51 million are stocks and bonds and $49 million are operating equipment meets the asset test regardless of how the assets are financed.

Either test alone is sufficient to classify the foreign corporation as a PFIC. Both tests do not need to be met simultaneously.

The Look-Through Rules: When Subsidiaries Matter

One of the more complex dimensions of PFIC identification is the look-through rule under IRC Section 1297(c). When a foreign corporation owns 25% or more of another corporation, the parent must look through the subsidiary's income and assets and treat a proportionate share of the subsidiary's items as its own for purposes of the PFIC tests.

This means a foreign holding company that itself earns no income may still be a PFIC because its subsidiaries' passive income flows up in proportion to the parent's ownership percentage. Conversely, a foreign operating company with significant passive assets on its balance sheet may avoid PFIC status because the look-through rules allow it to treat certain active subsidiary income as its own.

The CFC Overlap Rule: When PFIC and CFC Status Intersect

An important and frequently overlooked limitation on PFIC rules is the CFC overlap rule under IRC Section 1297(d). If a foreign corporation qualifies as both a PFIC and a Controlled Foreign Corporation (CFC), a US shareholder who owns 10% or more of the CFC's voting stock (a "US Shareholder" as defined under the CFC rules) is generally not subject to the PFIC rules for the portion of their holding period during which the CFC rules apply.

In practical terms, this means:

• A US person owning 10% or more of a foreign corporation that meets the PFIC tests may be exempt from the PFIC regime for that qualifying ownership period, because the CFC regime takes precedence
• The PFIC rules continue to apply to US persons owning less than 10% of the same foreign corporation, since they are not US Shareholders under the CFC definition
• The overlap rule applies only to the "qualified portion" of the holding period, meaning the period during which the entity was a CFC and the taxpayer was a US Shareholder

This distinction matters most for US persons with significant ownership stakes in foreign operating companies or foreign holding structures. A minority investor and a majority investor in the same foreign entity can face entirely different tax regimes on the same investment. The CFC and PFIC analyses must be conducted together, not in isolation, whenever a US person holds a meaningful ownership position in a foreign corporation.

What Investments Are Commonly PFICs

Understanding the abstract statutory tests is useful, but identifying PFICs in practice requires knowing which investment categories most frequently meet them.

Foreign Mutual Funds

This is the single most common PFIC situation for US expats and immigrants. A mutual fund, by definition, pools investor capital and deploys it in stocks, bonds, and other securities, all of which are passive assets. The income the fund earns is dividends, interest, and capital gains, all of which are passive income. Nearly every foreign mutual fund, regardless of country, will meet both the income test and the asset test and qualify as a PFIC.

Non-US Exchange-Traded Funds (ETFs)

Foreign ETFs listed on non-US exchanges, such as those on the London Stock Exchange, Tokyo Stock Exchange, Deutsche Börse, or Singapore Exchange, are typically structured as foreign corporations and hold passive securities as their underlying assets. The vast majority of these qualify as PFICs under the asset test.

Foreign Insurance-Linked Investment Products

Unit-linked insurance plans (ULIPs) in India, investment-linked insurance products in Singapore and Hong Kong, and similar insurance-wrapped investment vehicles in other countries combine an insurance component with an investment fund component. The fund component typically holds passive assets, and the structure as a whole often meets the PFIC tests. The insurance wrapper does not shield the investment from PFIC classification in most cases.

Foreign Holding Companies with Passive Investments

A US person who owns shares in a foreign privately held company needs to evaluate whether that company meets the PFIC tests. A foreign company that holds cash, marketable securities, or real estate on its balance sheet alongside an operating business may tip over the 50% passive asset threshold depending on the composition and value of its assets. Where the ownership stake is 10% or more, the CFC overlap rule should also be evaluated before concluding on PFIC status.

Certain Foreign Pension Plans

Some foreign private pension products, particularly those structured as foreign corporations with pooled investment components, can qualify as PFICs. Government-sponsored foreign pension schemes covered by bilateral tax treaties may receive different treatment, but treaty protection does not automatically resolve PFIC classification. Whether a specific foreign pension plan falls outside the PFIC rules requires a treaty-by-treaty analysis, looking at whether the treaty explicitly addresses the pension structure in question and whether the plan qualifies for the relevant treaty exemption. Privately structured pension vehicles without clear treaty protection require careful case-by-case review. For US green card holders and expats enrolled in foreign employer pension plans, this remains a common and frequently overlooked exposure.

Foreign Real Estate Investment Trusts (REITs)

Foreign REITs structured as corporations whose primary income is rent and dividends from property holdings often meet the PFIC income test. Unlike US REITs, which receive specific tax treatment under the Internal Revenue Code, foreign REITs are evaluated solely under the PFIC framework and frequently qualify.

Investments That Are NOT PFICs

A Step-by-Step Framework for Identifying PFICs in Your Portfolio

Step 1: List Every Foreign Investment You Hold

Begin with a complete inventory. Include every investment that is not issued, managed, or domiciled in the United States. This includes mutual funds, ETFs, individual stocks in foreign companies, insurance products, pension products, trust interests, and partnership or fund interests outside the US.

Step 2: Determine Whether Each Investment Is a Foreign Corporation

PFIC rules apply only to foreign corporations. If the investment is a foreign partnership, a direct holding in foreign real estate, or a foreign government bond held in your own name, it is not subject to PFIC rules. If it is a foreign corporate entity, including a fund structured as a corporation, proceed to Step 3.

Step 3: Check for CFC Overlap

If you own 10% or more of the foreign corporation's voting stock, determine whether the entity qualifies as a CFC. If it does, and you qualify as a U.S. shareholder, the CFC overlap rule under IRC Section 1297(d) may exclude your holding from the PFIC regime for the qualifying portion of your holding period. This analysis should be completed before applying the PFIC tests.

Step 4: Apply the Income Test

Identify the investment's gross income composition for its most recent tax year. If 75% or more of gross income is from dividends, interest, capital gains, or other passive sources, the investment meets the income test and is a PFIC.

Step 5: Apply the Asset Test

If the income test result is unclear or inconclusive, evaluate the investment's asset composition. If 50% or more of the average quarterly asset value consists of cash, securities, bonds, or other passive holdings, the investment meets the asset test and is a PFIC.

Step 6: Apply Look-Through Rules Where Relevant

If the entity in question is a holding company that owns other entities, apply the 25% look-through rule to incorporate the income and assets of subsidiaries proportionately before concluding.

Step 7: Assess Exceptions and Exclusions

A small number of exceptions exist to PFIC reporting:

• De minimis exception: See the detailed explanation in the FAQ section below
• Transitory ownership: PFIC shares owned for 30 days or less during which no PFIC taxation was triggered may be exempt from reporting
• Dual-resident taxpayer exception: Taxpayers treated as residents of a foreign country under a treaty tie-breaker rule may have a reporting exception

Once You Identify a PFIC: The Three Tax Regimes

The QEF election is generally the most favorable long-term approach when available. The MTM election provides predictability and avoids the punitive interest charge mechanism. The excess distribution default regime is the automatic result if no election is made and is almost always the worst outcome from a tax efficiency standpoint.

Form 8621: Reporting Requirements in 2026

Every US person who is a direct or indirect shareholder of a PFIC must file Form 8621 (Information Return by a Shareholder of a Passive Foreign Investment Company or Qualified Electing Fund) if any of the following apply in a given tax year:

• You received a distribution from the PFIC (any amount)
• You recognized gain on a sale or disposition of PFIC shares
• You have a QEF or mark-to-market election in effect
• You are making or reporting an election on Part II of the form
• You are required to file an annual report under IRC Section 1298(f) and do not qualify for an exception

Form 8621 is filed once per PFIC, per tax year. A US person who holds shares in five different foreign mutual funds files five separate Forms 8621 with their annual return. There is no consolidated PFIC reporting form.

Statute of limitations: Under IRC Section 6501(e)(1) and IRS Notice 2014-1, failure to file a required Form 8621 suspends the limitations period for items related to the PFIC. The IRS takes an aggressive position that the suspension can affect the entire return, but this interpretation has not been definitively settled across all fact patterns. What is clear is that the statute of limitations on PFIC-related items remains open until the required Form 8621 is filed, and the practical risk of an extended audit exposure on the broader return is real. Voluntary filing of all required Forms 8621 is the only reliable way to close this exposure.

How NSKT Global Can Help

Identifying PFICs in a portfolio and managing the associated reporting and tax elections is one of the most technically demanding areas of US international tax compliance. NSKT Global helps US taxpayers, including expats, green card holders, and immigrants with pre-existing foreign portfolios, conduct a complete PFIC review of all foreign holdings, apply the income and asset tests to each investment, evaluate the CFC overlap rule where relevant, identify applicable exceptions, and determine the most tax-efficient election strategy for each confirmed PFIC. For clients with multiple years of unaddressed PFIC exposure, NSKT Global also structures remediation strategies including late QEF elections and mark-to-market elections where available, and prepares all required Forms 8621 to bring the filing record current before the IRS raises the issue on audit.

People Also Ask

Q: What is a PFIC and how does it affect US taxpayers?

A PFIC is a foreign corporation that meets either the 75% passive income test or the 50% passive asset test. US taxpayers who hold PFIC shares face punitive tax treatment on distributions and gains, mandatory Form 8621 reporting, and a suspended statute of limitations on PFIC-related return items until all required forms are filed.

Q: How do I know if my foreign mutual fund is a PFIC?

Almost certainly yes. Foreign mutual funds collect investor capital and invest in stocks, bonds, and other securities, all of which are passive assets earning passive income. Virtually every foreign mutual fund meets both the income test and the asset test and qualifies as a PFIC.

Q: Are non-US ETFs considered PFICs?

Generally yes. Non-US ETFs listed on foreign exchanges are typically structured as foreign corporations holding passive securities. Most qualify as PFICs. US-listed ETFs are not PFICs because they are structured as domestic regulated investment companies.

Q: What is the CFC overlap rule and how does it affect PFIC status?

Under IRC Section 1297(d), if a foreign corporation qualifies as both a PFIC and a CFC, a US Shareholder owning 10% or more of the CFC's voting stock is generally not subject to PFIC rules for the qualifying portion of their holding period. The CFC regime takes precedence for those shareholders. US persons owning less than 10% of the same entity remain subject to PFIC rules.

Q: What is the de minimis exception to Form 8621 filing?

The de minimis exception applies only when all three of the following conditions are met simultaneously: you have not made a QEF or mark-to-market election for any of your PFICs; you received no excess distribution from any PFIC during the year; and the combined aggregate value of all PFIC stock you own at year-end does not exceed $25,000 ($50,000 for joint filers). The $25,000 limit applies to the total value of all PFIC holdings combined, not to each PFIC individually. This exception is evaluated each year separately and does not eliminate PFIC status or remove the obligation to make elections or report in future years when conditions change.

Q: Does treaty protection automatically exempt a foreign pension plan from PFIC classification?

No. Treaty protection does not automatically resolve PFIC classification for a foreign pension plan. Whether a specific foreign pension plan falls outside the PFIC rules requires a treaty-by-treaty analysis to determine whether the treaty explicitly covers the pension structure and whether the plan qualifies for the relevant treaty exemption. Plans without clear treaty protection require individual evaluation under the standard PFIC tests.