PFIC 75% Income Test Explained

The passive foreign investment company income test, also known as the IRC 1297 PFIC test, requires that 75% or more of a foreign corporation’s gross income be passive (interest, dividends, royalties) for the tax year under IRC Section 1297. Meeting this threshold classifies the entity as a PFIC, triggering Form 8621 PFIC compliance obligations for US shareholders.

The 75% threshold is tested every tax year, so a corporation’s income mix can move it in and out of PFIC status from one year to the next rather than settling the question once. The PFIC look-through rule adds another layer: passive income earned by a related lower-tier foreign corporation can flow into the parent’s calculation even though shareholders never receive that income directly. Once the threshold is met for a given year, the shareholder must file Form 8621 for that holding, reporting excess distributions or electing mark-to-market treatment, and misidentifying passive income sources creates significant underreported tax exposure and penalty risk.

Key Takeaways

• Form 8621 includes new Part V lines on page 3 for updated PFIC reporting requirements as of 2025.
• PFIC rules deny tax deferral benefits to US persons investing in foreign corporations generating primarily passive income.
• PFICs subject investors to complex tax rules resulting in high tax rates and strict reporting obligations.
• US investors holding foreign fund shares must understand PFIC compliance before filing 2025 returns in 2026.

What Do You Need Before Testing For PFIC Status?

Gather a complete list of every foreign corporate holding before starting any PFIC calculation. Ownership records, stock certificates, and even stock options need to be identified first. The test applies corporation by corporation rather than to a portfolio as a whole.

Section 1297 of the Internal Revenue Code sets the framework. A foreign corporation becomes a passive foreign investment company by meeting either of two independent annual tests a 75% passive income test or a 50% passive asset test — and crossing just one is enough on its own to trigger PFIC status; the corporation does not need to fail both. Precisely because either test alone is decisive, a defensible determination still runs both before pulling financial statements: checking only one risks missing the test the corporation actually fails under, and reaching the wrong conclusion about its status.

Preparation for this stage generally requires:

1. A full list of foreign corporations where stock or an option to acquire stock is held.
2. Entity-level income statements to measure passive income against total gross income.
3. Balance sheet data to test average assets, if the income test proves inconclusive.
4. Documentation on ownership percentage, needed for a separate but related question.

Does the 75% income test apply to every foreign investment?

No single test applies to a portfolio; each foreign corporation gets its own review. That is why gathering ownership records first, corporation by corporation, prevents wasted analysis later.

Is a PFIC analysis the same as a CFC analysis?

No. A controlled foreign corporation, or CFC, turns on ownership concentration more than 50% held by U.S. shareholders who each own at least a notable share. A PFIC turns on how the corporation earns income or holds assets, regardless of who owns it. Investors working directly with one practitioner on this fact-gathering stage, rather than passing records through multiple staff layers, keep the two analyzes properly separated from the start.

How Do You Identify Passive Income For The Test?

Interest, dividends, capital gains, and similar investment returns make up the PFIC passive income definition under the 75% passive income test that determines PFIC status. Foreign banks now report American account holders directly to the IRS under FATCA. This kind of income rarely stays hidden from view. Advisors and investors should walk through the foreign corporation’s income statement using a consistent process, rather than guessing at what counts.

1. Pull the foreign corporation’s most recent income statement and separate operating revenue from investment returns.
2. Flag interest, dividends, rents, royalties, and net gains from securities sales as passive income.
3. Check for related lower-tier corporations; look-through rules can pull their income into the parent’s calculation even when that income never reaches the shareholder directly.
4. Total the passive income and divide by gross income for the year to see whether the 75% threshold is crossed.
5. Repeat this review annually, since a corporation’s income mix can shift it in and out of PFIC territory year to year.

Congress built this test to reach foreign corporations that generate mostly passive returns for U.S. investors who fall outside the anti-deferral rules that apply to controlled foreign corporations. Ownership percentage does not matter here. A minority shareholder holding a small stake in a foreign holding company can still trigger PFIC reporting once the corporation’s income mix tips toward passive.

Does Owning Only A Small Stake Matter?

No. The income test looks at the corporation’s income, not the shareholder’s ownership percentage. A foreign company earning mostly passive income creates PFIC exposure for every U.S. shareholder, even one holding a fraction of a percent.

What Counts As A Look-Through Subsidiary?

A subsidiary counts as look-through when a related lower-tier foreign corporation feeds income up to the entity being tested. That income gets pulled into the parent’s income test calculation instead of being excluded.

How Do You Calculate The 75% Income Test?

Calculating the 75% income test explained for PFIC purposes starts with a single ratio: passive income divided by total gross income for the tax year. A foreign corporation is classified as a PFIC for the tax year once that ratio reaches 75% or higher. No ownership threshold, no control requirement just the income mix for that year.

The mechanics follow a set order. Tax preparers and investors reviewing a foreign corporation’s financials should work through these steps:

1. Total the corporation’s gross income for the tax year, from all sources.
2. Identify and total the passive income component (dividends, interest, rents, royalties, and similar categories).
3. Divide passive income by total gross income to produce a percentage.
4. Compare that percentage against the 75% threshold.
5. Convert any foreign-currency figures to U.S. dollars and enter the applicable currency code, since current Form 8621 fields require both.

Does A Failed CFC Test Change How The Income Ratio Is Calculated?

No. The calculation runs the same way regardless of CFC status: total passive income divided by total gross income for the tax year, compared against the 75% threshold. A corporation with widely dispersed ownership that never comes close to CFC status can still cross that threshold on the income mix alone, so the calculation steps above apply exactly as described whether or not a CFC analysis was ever performed for that entity.

Is the income test the only way a corporation becomes a PFIC?

Not by itself. A separate asset test can trigger PFIC status even when the income ratio falls short. Both tests deserve a full review rather than a single calculation.

Test	Threshold	What It Measures
Income test	75% or more	Passive income as a share of total gross income
Asset test	50% or more	Passive assets as a share of average total assets

This PFIC asset test vs income test comparison shows why a determination should never rest on a single calculation — a corporation can fail one test and still land in PFIC territory under the other.

Running only one test leaves gaps. Reviewing both, with currency conversions handled correctly, produces a defensible PFIC determination for Form 8621.

What Happens If The Corporation Passes The Test?

Once a foreign corporation meets the 75% income threshold, the shareholder must file a separate Form 8621 for that holding for that tax year one form per PFIC held, per year, since each foreign corporation is tested and reported on its own. This obligation exists separately from any Controlled Foreign Corporation reporting. Form 5471 CFC reporting and the PFIC 75% income test explained here rest on different criteria ownership concentration for the CFC classification, income composition for the PFIC classification so a corporation filed on Form 5471 under CFC rules has not thereby settled its PFIC status; that determination still has to be made on its own terms. Shareholders sometimes assume one filing covers both situations. It doesn’t.

Skipping the form carries no flat dollar penalty, which is precisely what makes it dangerous: an unfiled Form 8621 can leave the entire tax return open to IRS review indefinitely, and any gain or large distribution defaults to the excess distribution method, taxed at the top ordinary rate for each year held plus a compounding interest charge. A timely QEF or mark-to-market election can soften that treatment going forward, but timing rules restrict how late an election can be made, so which election fits which holding is a determination worth making in the year the PFIC is acquired, not after the default method has already locked in.

Once the threshold is crossed, the shareholder should follow a defined sequence rather than guess at next steps.

1. Confirm the specific tax year in which the passive income ratio hit 75% or higher.
2. Identify every year the corporation held that status, since the obligation repeats annually.
3. Determine whether a Form 5471 filing already exists for the same entity under CFC rules, and treat that as a separate question from the PFIC determination.
4. Locate or reconstruct financial statements needed to complete Form 8621 for the affected years.
5. Check whether the current-year form includes the new Part V reporting lines added for 2025, since a corporation that just crossed the threshold may face additional fields absent from prior returns.

Does A Passed Test Always Mean Penalties?

Not automatically. But a missed Form 8621 rarely stays an isolated paperwork gap once the IRS identifies it. It can shift the entire compliance posture and expose the shareholder to significant penalty exposure, which is why the filing history deserves a full review rather than a one-year fix.

The election made in the year a PFIC is acquired determines how it is taxed for every year after. Late elections are restricted, so this choice is best made early rather than after the default method has already applied.

Election	How It’s Taxed	Timing Requirement
Default (no election)	Excess distribution method — gains and large distributions spread across the holding period, taxed at the top ordinary rate for each year, plus a compounding interest charge	Applies automatically if no election is made
QEF (Qualified Electing Fund)	Shareholder reports their share of the fund’s ordinary income and capital gain each year, preserving more normal tax treatment	Generally must be made in the first year the PFIC is held; requires annual data from the fund
Mark-to-market	Annual change in the fund’s market value is taxed as ordinary income, with limited ordinary losses allowed	Generally must be made in the first year the PFIC is held

FAQ

What triggers PFIC status under the 75% income test?

A foreign corporation becomes a PFIC when 75% or more of its gross income is passive interest, dividends, rents, royalties, or capital gains—under IRC Section 1297, triggering Form 8621 filing.

Does the income test apply across an entire investment portfolio?

No, the test applies corporation by corporation rather than to a portfolio as a whole, so gathering ownership records for each foreign holding separately prevents wasted analysis.

How does a PFIC analysis differ from a CFC analysis?

The two tests measure different things entirely, so passing or failing one says nothing about the other: a CFC determination depends on what share of the corporation U.S. shareholders control, while the PFIC determination depends only on the corporation’s income mix or asset composition for the year, regardless of who owns it. A corporation can clear the CFC threshold and still separately cross the PFIC income test, which is why both classifications need their own review.

Can a corporation fail the income test but still be a PFIC?

Yes. A separate 50% passive asset test can classify a corporation as a PFIC even when the income ratio falls short of 75%. A defensible determination checks both tests rather than stopping at the first one.

What happens if a shareholder never files Form 8621 for a PFIC holding?

There is no flat dollar penalty for a missed Form 8621, but the omission leaves the entire tax return open to IRS review indefinitely, and any gain or large distribution defaults to the excess distribution method — taxed at the top ordinary rate for each year held, plus a compounding interest charge.

Conclusion

The 75% income test is a straightforward ratio, but reaching a defensible answer takes discipline: identify every foreign corporate holding first, run the income test corporation by corporation, and check the asset test alongside it rather than relying on one calculation. Because the test is checked every tax year, a corporation that clears PFIC status once can still cross the threshold later and the look-through rule means a subsidiary’s passive income can push the parent into PFIC territory even when shareholders never see that income directly.

Once a corporation crosses the 75% threshold, the filing obligation is not optional and it is not forgiving of delay. Form 8621 is due for each PFIC held, for each year the status applies, and the election made in the first year QEF, mark-to-market, or the default excess distribution method locks in how that holding is taxed going forward. Getting the determination and the election right from the start avoids the far more difficult position of unwinding a missed filing after the fact.