IRS Form 8621: Passive Foreign Investment Company (PFIC) – Instructions, Threshold, and Penalties

Josh Katz, CPA
Author: Josh Katz, CPA
Updated: February 23, 2026

Investing globally can present lucrative opportunities, but it also comes with a set of regulatory considerations, particularly when dealing with Passive Foreign Investment Companies (PFICs). For US taxpayers who hold investments in PFICs, reporting requirements are crucial and involve Form 8621. Here’s a comprehensive guide to understanding Form 8621, including its purpose, thresholds, reporting instructions, and associated penalties.

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Key Summary: IRS From 8621 PFIC Reporting

  • Form 8621 is required for US taxpayers who own shares in a Passive Foreign Investment Company (PFIC), including most foreign mutual funds, foreign ETFs, and pooled offshore investments.

  • Filing Form 8621 is generally required if the aggregate value of all PFIC holdings exceeds $25,000 (Single) or $50,000 (Married Filing Jointly). However, if you receive any distribution or sell a share, you must file regardless of the total account value.

  • PFIC income can be taxed under three methods: Section 1291 (default), Mark-to-Market (MTM), or Qualified Electing Fund (QEF), with the default method often resulting in the highest tax and interest charges.

  • Each PFIC requires a separate Form 8621, meaning investors holding multiple foreign funds may need to file multiple forms.

What is a PFIC?

A PFIC, or Passive Foreign Investment Company, is a specific classification under US tax law for certain non-US corporations that meet certain criteria related to their income and assets. The concept of a PFIC was introduced to address US taxpayers’ investments in foreign corporations that primarily generate passive income or hold passive assets.

The primary purpose of the PFIC rules is to prevent US taxpayers from deferring tax on income earned through passive investments held in foreign corporations.

Without these rules, taxpayers might be incentivized to invest in foreign corporations to defer US tax on passive income, thereby potentially avoiding or delaying US tax obligations.

Passive Income vs. Active Income

In the context of PFIC classification, it’s important to differentiate between passive income and active income:

  • Passive Income: This includes income generated from investments and not from active business operations. Examples include dividends, interest, capital gains from the sale of securities, rental income, and royalties.
  • Active Income: This refers to income earned from active business operations, such as revenue from the sale of goods or services, wages, salaries, and professional fees.

Criteria for PFIC Classification

To determine if a foreign corporation is a PFIC, it must meet one of the following tests:

  • Income Test: A foreign corporation meets the income test if at least 75% of its gross income for the taxable year is passive income. Passive income includes dividends, interest, royalties, rents, annuities, and gains from the investment property sale or exchange.
  • Asset Test: Alternatively, a foreign corporation meets the asset test if at least 50% of its average assets for the taxable year produce, or are held for the production of, passive income.

Who Must File Form 8621?

Generally, any US person (citizen, resident alien, or domestic entity) who is a direct or indirect shareholder of a PFIC must file Form 8621 for each PFIC owned. You are required to file if you:

  • Receive a distribution from a PFIC.
  • Recognize a gain on the sale or disposition of PFIC stock.
  • Are making (or have you previously made) certain tax elections like QEF or Mark-to-Market.

IRS Form 8621 Filing Thresholds and Requirements

Excess Distribution Threshold

The primary trigger for filing Form 8621 is receiving an excess distribution from a PFIC. An excess distribution is any distribution received from a PFIC that exceeds 125% of the average annual distributions received in the prior three years (or, if shorter, the shareholder’s holding period). If you receive an excess distribution, you are required to file Form 8621 for that tax year.

Ownership Thresholds

Even if you do not receive an excess distribution, you may still be required to file Form 8621 if you are a direct or indirect shareholder of a PFIC. Generally, the filing requirement is triggered if:

  • You directly own shares of a PFIC.
  • You indirectly own shares through another entity, such as a partnership or corporation.
  • You are a beneficiary of a trust that owns shares of a PFIC.

Exceptions to Filing PFIC Form 8621

While the general rule is that any shareholder of a PFIC must file Form 8621, there are certain exceptions and considerations to keep in mind:

De Minimis Exception:

The IRS provides a de minimis exception for certain small shareholders. This exception applies if:

  • The aggregate value of all PFIC stock owned by the taxpayer and related persons is $25,000 or less ($50,000 or less for married couples filing jointly) at the end of the tax year, or
  • The taxpayer did not receive an excess distribution from the PFIC during the tax year and has not made certain elections (e.g., QEF election, mark-to-market election).

Ownership Through Certain Entities:

In some cases, shareholders may not have a direct filing requirement if they own PFIC stock indirectly through certain types of entities (e.g., mutual funds, partnerships) that are themselves subject to PFIC reporting.

How is a PFIC Taxed?

PFIC taxation is notoriously complex. There are three primary tax methods under Form 8621:

1. Default (Excess Distribution) Method

If you do not make an election, the IRS applies the excess distribution method, which is typically the harshest:

  • Gains and certain distributions are allocated across holding years
  • Amounts are taxed at the highest ordinary income rate for each year
  • Interest charges apply as if the tax were unpaid in prior years

This often results in significantly higher taxes.

2. Qualified Electing Fund (QEF) Election

Under the QEF election:

  • You report your share of the PFIC’s annual earnings
  • Income is taxed annually (even if not distributed)
  • Avoids punitive interest charges

However, the PFIC must provide annual financial statements to allow this election.

3. Mark-to-Market Election

If the PFIC stock is marketable:

  • You report annual unrealized gains as ordinary income
  • Losses are limited to previously recognized gains
  • Avoids excess distribution treatment

This election is made directly on Form 8621.

PFIC Taxation Method

PFIC Taxation Method  How It Works Advantages & Disadvantages
Section 1291 (Default Method) Gains and excess distributions are allocated across your entire holding period. Each portion is taxed at the highest ordinary income tax rate applicable in prior years, plus IRS interest charges. Disadvantage: Often results in extremely high effective tax rates, sometimes exceeding 50%, due to back-tax allocation and compounded interest.
Mark-to-Market Election The PFIC stock is treated as if it were sold at fair market value on the last day of each tax year. Unrealized gains are taxed as ordinary income annually. Advantage: Avoids interest charges and complex excess distribution calculations.

Disadvantage: You pay tax on unrealized gains, even if you did not receive any cash distributions.

 QEF Election You report and pay tax annually on your share of the PFIC’s actual earnings, whether distributed or not. Advantage: Generally provides the most favorable tax treatment, including potential capital gains rates.

Disadvantage: Requires the PFIC to issue a PFIC Annual Information Statement, which many foreign funds do not provide.

Information Required on Form 8621

Form 8621 collects detailed information about the PFIC, including:

  • Identification of the PFIC, such as name, address, and employer identification number (EIN).
  • Details of the shareholder’s interest in the PFIC, including the number of shares owned and the holding period.
  • Income and distributions received from the PFIC during the tax year.
  • Elections made regarding the treatment of PFIC income, such as the Qualified Electing Fund (QEF) election or Mark-to-Market (MTM) election.

Get Expert Help with Form 8621

PFIC reporting is complex and mistakes are costly. Get professional guidance to file Form 8621 correctly and avoid IRS penalties.

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How to Complete IRS Form 8621?

Filling out IRS Form 8621 requires careful attention to detail due to the complexities involved with reporting on Passive Foreign Investment Companies (PFICs). Here’s a step-by-step instruction and guide on how to complete the key parts of Form 8621:

Part I: Annual Information

  • Identification of PFIC: Provide the name, address, and Employer Identification Number (EIN) of the PFIC.
  • Shareholder Information: Enter your name, taxpayer identification number (TIN), and the tax year for which you are filing the form.
  • PFIC Stock Ownership: Indicate the number of PFIC shares owned directly or indirectly through partnerships, corporations, or trusts. Specify the beginning and ending dates of your ownership during the tax year.
  • Elections: Check the appropriate box to indicate if you are making any elections for the PFIC, such as the Qualified Electing Fund (QEF) election or Mark-to-Market (MTM) election.

Part II: Excess Distribution and Gain Calculation

If you received an excess distribution from the PFIC during the tax year, start by calculating the total distributions you received and, if applicable, the average distributions for the prior three years.

Compare your current-year distribution to 125% of this average to determine the excess amount. Once the excess distribution is identified, calculate the portion that is taxable and apply any interest charges on the deferred tax liability associated with that excess.

Part III: Summary of Annual Information

  • Income and Distributions: Summarize the total income and distributions received from the PFIC during the tax year. Include any amounts previously taxed as excess distributions from prior years.
  • Election Summary: Provide a summary of any elections made regarding the PFIC, such as QEF or MTM elections.

Additional Considerations

  • QEF Election: If you make a QEF election, attach a separate statement providing the required information, including your share of the PFIC’s ordinary earnings and net capital gain.
  • Mark-to-Market Election: If you make an MTM election, report any gain or loss from the deemed sale of PFIC stock at fair market value.
  • Amended Returns: If amending a prior year’s Form 8621, clearly indicate the tax year being amended and provide accurate information for the applicable sections.

Deadline for Filing Form 8621

Form 8621 is generally due along with your annual income tax return (e.g., Form 1040) for the applicable tax year. The filing deadline is typically April 15th of the following year. However, if you are residing outside the United States, you may qualify for an automatic two-month extension, making the deadline June 15th.

Extensions beyond these deadlines can be obtained by filing Form 4868 (Application for Automatic Extension of Time to File US Individual Income Tax Return) before the original due date of your tax return. The extended deadline typically falls on October 15th.

IRS Form 8621 Penalties for Non-Filing or Late Filing

Failure to file Form 8621 or filing it incorrectly can result in significant penalties imposed by the IRS. The penalties include:

  • Failure-to-File Penalty: The penalty for failing to file Form 8621 by the due date (including extensions) is generally $10,000 per form. The penalty may be waived if the taxpayer can demonstrate reasonable cause for the failure to file.
  • Accuracy-Related Penalties: Aside from the failure-to-file penalty, taxpayers may face accuracy-related penalties if the information reported on Form 8621 is inaccurate or incomplete. The accuracy-related penalty is 20% of the underpayment of tax attributable to the PFIC-related reporting issues.
  • Interest Charges: In addition to penalties, taxpayers may also be subject to interest charges on any tax liabilities resulting from PFIC-related income or distributions. Interest is calculated on the amount of tax due from the original due date of the return until the date of payment.

Special Considerations

  • Amended Returns: If you discover errors or omissions on previously filed Form 8621s, consider filing an amended return (Form 1040X) to correct the information and potentially avoid penalties.
  • Reasonable Cause Waiver: The IRS may grant a waiver of penalties if the taxpayer can demonstrate reasonable cause for the failure to file or inaccuracies in the reporting.