What does Form 8938 Part IV actually ask for?

Form 8938 Part IV asks only for a count. If specified foreign financial assets were reported on Form 5471, Form 8621, Form 8865, or another listed information return for the same tax year, the filer enters how many of each form were filed on lines 17, 18, and 19. There is no asset description, value column, or address field on Part IV itself, unlike Parts V and VI.

Does the Part IV exception mean I do not need to file Form 8938 at all?

No. Even where every specified foreign financial asset is excepted under Part IV, Form 8938 must still be attached to the annual return and filed by its due date, including extensions, whenever the applicable reporting threshold is met. Part IV only changes how the asset is presented, completing the name, taxpayer identification number, and Part IV lines rather than Parts V or VI.

Do assets reported on Form 5471 still count toward my Form 8938 threshold?

Yes, for a specified individual. IRS instructions require the value of any specified foreign financial asset reported on Form 5471, Form 8621, or Form 8865 to be included when determining whether the taxpayer has crossed the reporting threshold that applies to them, even though the asset itself does not need to be separately described on Form 8938.

What happens if my Form 5471 for a UK company was filed late?

The duplicative reporting exception applies only to forms that are timely filed with the IRS for the same tax year. A late-filed Form 5471 does not satisfy that condition, so the safer position is to separately report the underlying UK company shareholding in Part V or Part VI of Form 8938 rather than relying on Part IV alone.

Is a UK investment fund reported on Form 8621 or Form 8865?

Most UK authorised funds, OEICs, and similar pooled investment vehicles are treated as passive foreign investment companies for US purposes and are reported on Form 8621, recorded on line 18 of Part IV. Form 8865 instead covers an interest in a UK limited partnership or LLP taxed as a partnership, recorded on line 19.

Do specified domestic entities follow the same Part IV threshold rule as individuals?

No. A specified individual must include the value of Part IV assets when testing against their reporting threshold, but a specified domestic entity, such as a closely held US corporation or partnership holding UK assets, excludes that value when determining whether it satisfies its own applicable reporting threshold.

Form 8938 Part IV: Duplicative Reporting Exception

Form 8938 Part IV is the section of the Statement of Specified Foreign Financial Assets where a taxpayer who has already reported a UK asset on Form 5471, Form 8621, Form 8865, or one of the other listed information returns simply enters the number of those forms filed, rather than repeating the details of the asset in Parts V or VI. For a high-net-worth American in the UK who holds a UK company through Form 5471, or units in a UK fund through Form 8621, Part IV exists to stop the same asset being described twice on the same return. It does not, however, remove the asset from the return altogether, and it never removes the obligation to file Form 8938 itself. The value of every asset counted in Part IV still has to be added into the total that determines whether a specified individual has crossed the applicable reporting threshold. Practitioners who treat Part IV as a full exemption, rather than a duplicate-detail exception, routinely under-report and expose high-net-worth clients, including company shareholders, fund investors, founders and investment bankers, to the IRS failure-to-file penalty regime.

What is Form 8938 Part IV?

Part IV of Form 8938 carries the printed heading Excepted Specified Foreign Financial Assets and sits on page 1 of the form, immediately below Part III, Summary of Tax Items Attributable to Specified Foreign Financial Assets. The instruction printed directly above the entry lines reads, in substance, that if the filer reported specified foreign financial assets on one or more of the listed forms, they enter the number of such forms filed and do not need to include those assets on Form 8938 for the tax year. Unlike Parts V and VI, Part IV contains no description field, no maximum-value column, and no address block. It is a pure count. That single design fact matters: Form 8938 Part IV asks how many qualifying forms were filed, not what the assets inside those forms were worth, where they were held, or who the counterparty was. Anyone describing a value column, a checkbox for each asset, or a narrative field on Part IV is describing a form that does not exist. Getting this structural point right is the difference between a return that is merely simplified and one that has quietly under-reported.

Which forms qualify for the Form 8938 Part IV exception?

Part IV lists five numbered lines in total. Three of them are directly relevant to UK cross-border structures and sit within scope here; two further lines cover other listed information returns that fall outside the scope of this article and are not addressed below.

Form 5471, Information Return of U.S. Persons With Respect to Certain Foreign Corporations, entered on line 17. This is the form most high-net-worth Americans in the UK associate with owning, or holding officer, director, or significant shareholder status in, a UK private or public company.
Form 8621, Information Return by a Shareholder of a Passive Foreign Investment Company or Qualified Electing Fund, entered on line 18. UK authorised funds, OEICs, and most pooled UK investment vehicles are treated as passive foreign investment companies for US purposes, which is why this line comes up constantly for UK-resident American investors.
Form 8865, Return of U.S. Persons With Respect to Certain Foreign Partnerships, entered on line 19. This covers an interest in a UK limited partnership or a UK LLP that is taxed as a partnership rather than a company.

If a specified foreign financial asset is properly and timely reported on one of these three forms for the same tax year, the taxpayer does not need to separately describe that asset in Part V or Part VI of Form 8938. Instead, the corresponding line in Part IV is used to record how many of that form type were filed.

How do you enter the count on Part IV lines 17 to 19?

The mechanics are deliberately simple. Against line 17, the filer writes the number of Forms 5471 filed for the tax year; against line 18, the number of Forms 8621; against line 19, the number of Forms 8865. There is no requirement to identify which specific asset relates to which form, no requirement to cross-reference an entity name, and no requirement to state a dollar figure on Part IV itself. If a specified individual reports every one of their specified foreign financial assets on timely filed qualifying forms, IRS instructions direct the filer to enter name and taxpayer identification number at the top of Form 8938 and complete Part IV only, skipping Parts I, II, III, V, and VI entirely. If only some assets are covered by qualifying forms and others are not, the remaining assets must still be reported in the normal way in Part V or Part VI, and Part IV is completed alongside that fuller filing to record the forms that were used for the rest.

Why the exception removes detail, not value

This is the point competitors most often blur, and it is the single most important idea behind Form 8938 Part IV. A specified individual must include the value of every asset reported on a qualifying form, even though that asset is excepted from separate description, when determining whether the total value of specified foreign financial assets exceeds the applicable reporting threshold. In practical terms, a UK company shareholding worth 400,000 US dollars that is fully and correctly disclosed on a timely filed Form 5471 still counts, in full, toward the test of whether an unmarried American living in the UK has crossed the 200,000 dollar year-end or 300,000 dollar any-time threshold that applies to specified individuals resident abroad. The exception changes how the asset is presented on Form 8938. It does not change whether the asset pushes the taxpayer over the line that requires Form 8938 to be filed in the first place.

Specified individuals and specified domestic entities follow different rules

The threshold treatment described above applies to specified individuals. Specified domestic entities, broadly closely held domestic corporations and partnerships that hold specified foreign financial assets, are treated differently: they exclude the value of any specified foreign financial asset reported on a qualifying Part IV form when working out whether they satisfy the applicable reporting threshold. For a high-net-worth founder who holds a UK company both personally and through a US holding entity, this distinction matters enormously. The individual-level test still pulls the value of the UK company back into the threshold calculation; the entity-level test, for a specified domestic entity, does not. Confusing the two rules is one of the more consequential errors seen in cross-border structuring, because it can lead a taxpayer to wrongly assume they have stayed below a threshold that, correctly calculated, they have exceeded.

What happens when the other form is filed late or not at all?

The duplicative reporting exception is conditioned on timely filing. IRS instructions state that a taxpayer does not have to separately report an asset on Form 8938 if it is reported on a qualifying form that is timely filed with the IRS for the same tax year. A Form 5471, Form 8621, or Form 8865 that is filed late, or not filed at all, does not satisfy that condition. Where the underlying form has been filed late, the safer and technically correct compliance position is to treat the asset as not excepted: it should be separately described in Part V or Part VI of Form 8938 for that tax year, in addition to whatever late-filing correction is made for the other return. IRS instructions do not carve out a grace period or a separate cure mechanism specific to Part IV. The only relief available for a resulting Form 8938 error is the general reasonable cause standard that applies to Form 8938 penalties, and a taxpayer must affirmatively demonstrate the facts supporting that claim rather than assume the exception simply survives a late filing.

A UK company on Form 5471 compared with a UK fund on Form 8621

Two of the most common UK holdings for high-net-worth Americans route through different Part IV lines, and it helps to see them side by side. A UK trading or holding company in which a US person is an officer, director, or meets the relevant ownership threshold is reported on Form 5471 and recorded on line 17 of Part IV. A UK authorised fund, open-ended investment company, or similar pooled fund vehicle is, for most US tax purposes, a passive foreign investment company, reported on Form 8621 and recorded on line 18. Both categories can sit inside the same portfolio at the same time, for example a UK operating company built by a founder alongside a separate UK investment fund held for diversification. Each timely filed form supports its own Part IV line, and the value of each asset still feeds into the same combined Form 8938 threshold test for a specified individual, regardless of which line it was recorded against.

Joint Form 5471 or Form 8865 filers

A further nuance affects founders or family groups where more than one US person has an interest in the same UK company or UK partnership. Where a taxpayer is included as part of a joint Form 5471 or Form 8865 filing and provides the notification required under the applicable Treasury regulations, that taxpayer is treated as having filed the form themselves for purposes of the Form 8938 Part IV exception. This allows co-owners of a single UK entity to rely on one underlying filing while each still completing their own Part IV line correctly, rather than each having to originate a separate Form 5471 or Form 8865 to qualify for the exception.

Worked scenario: a UK company and UK fund holding

This is an illustrative worked scenario. An unmarried American investment banker living and working in London holds two UK assets. The first is a 25 per cent shareholding in a UK trading company she co-founded, valued at 350,000 US dollars at year end, reported on a timely filed Form 5471. The second is a holding in a UK authorised investment fund valued at 90,000 US dollars at year end, reported on a timely filed Form 8621. Because she reports specified foreign financial assets in these two categories only, and both forms were timely filed, she does not separately describe either asset in Part V or Part VI of Form 8938. She enters 1 on line 17 for the Form 5471 and 1 on line 18 for the Form 8621. She must still determine whether she meets the reporting threshold for a specified individual living abroad. Combining the two values gives 440,000 US dollars, which exceeds the 300,000 dollar any-time threshold that applies to an unmarried taxpayer resident outside the United States. She must file Form 8938, entering her name and taxpayer identification number at the top of the form and completing Part IV only, because both of her specified foreign financial assets were captured on qualifying forms.

What Form 8938 Part IV does not excuse

Even where every specified foreign financial asset a taxpayer owns is excepted under Part IV, Form 8938 itself must still be attached to the annual return of the taxpayer and filed by its due date, including extensions. The taxpayer still checks the type of filer, still enters name and taxpayer identification number, and still completes Part IV with accurate counts. Skipping the form altogether because everything is on the other returns is a common and costly misunderstanding. The failure-to-file penalty regime attaches to Form 8938 itself, starting at 10,000 US dollars and rising by a further 10,000 US dollars for each 30-day period of continued failure after IRS notice, up to an additional 50,000 US dollars, regardless of whether the underlying assets were fully and properly disclosed on Form 5471, Form 8621, or Form 8865.

Common mistakes in Form 8938 Part IV reporting

Assuming the Part IV exception removes the value of the asset from the reporting threshold calculation for a specified individual, when the instructions require that value to still be included.
Leaving Part IV blank while attaching a Form 5471, Form 8621, or Form 8865 for the same tax year, rather than recording the count on the correct line.
Treating a late-filed Form 5471 or Form 8621 as though it still qualifies for the exception, without confirming timely filing first.
Applying the specified-individual threshold rule to a specified domestic entity, or the reverse, when the two groups follow different treatment for Part IV assets.
Failing to complete Part IV at all when relying entirely on other listed information returns, on the mistaken assumption that no Form 8938 is required.

Practical steps for high-net-worth US persons in the UK

Reconcile UK company and UK fund holdings each filing season before assuming any asset qualifies for the Part IV exception, confirming that Form 5471, Form 8621, or Form 8865 has actually been timely filed rather than merely prepared. Keep valuation workpapers for every excepted asset, since the threshold calculation still depends on those figures even when the asset itself is not separately described. Cross-check UK-side filings, such as company accounts lodged with UK authorities and HMRC Self Assessment records, against the values used for US purposes, so that a single consistent asset value supports both sides of the Atlantic. Review joint Form 5471 or Form 8865 arrangements annually where more than one US person holds an interest in the same UK entity, to confirm the required notification has been made correctly for each co-owner. Treat Form 8938 as a standalone filing obligation that survives even a fully excepted asset base, and confirm it is attached to the return every year the threshold is met.

Key takeaways on Form 8938 Part IV

Form 8938 Part IV lets a filer avoid describing an asset twice once it has been properly and timely reported on Form 5471, Form 8621, Form 8865, or another listed information return, but it is a reporting-format exception rather than a substantive one. The value of an excepted asset still counts toward the reporting threshold of a specified individual, a late-filed underlying form does not preserve the exception, specified domestic entities follow a different threshold rule than specified individuals, and Form 8938 itself must still be filed whenever the threshold is met, regardless of how many assets Part IV allows the filer to summarise rather than describe.