If a nominee holds my UK company shares, does the nominee file Form 5471 instead of me?

No. The nominee is a registered holder, not the owner for US reporting purposes. Regulations section 1.6046-1 provides that where stock is held by a nominee, the required information is furnished by the actual owner of the stock. If you are a US person and you beneficially own 10 percent or more of a foreign corporation by voting power or value, the Form 5471 obligation is yours, whatever Companies House shows.

Does the Companies House PSC register tell me whether I have to file Form 5471?

No, and relying on it is a common cause of missed filings. The PSC conditions in Schedule 1A to the Companies Act 2006 start at more than 25 percent of shares or voting rights, while US shareholder status starts at 10 percent of voting power or value. The PSC regime also has no family attribution and reports in bands rather than exact figures. Use it as a cross-check, never as the answer.

I beneficially own 12 percent of a UK company through a nominee. Do I still file?

Almost certainly yes. Twelve percent clears the 10 percent US shareholder threshold measured by voting power or value, so if the company is a controlled foreign corporation you are a Category 5 filer, and the year you acquired the beneficial interest is likely a Category 3 event as well. You will not appear on the UK PSC register at that level, which is exactly why these cases go unfiled for years.

My UK shares sit in a private bank nominee account. How do I establish what I beneficially own?

Ask the provider for a holdings statement naming the issuer by full legal name and company number, whether the holding is pooled or designated, the registered nominee company's name, the share class and exact share count, the acquisition date, and the voting arrangements. Then compute your percentage against the issuer's issued share capital taken from its Companies House filings, not against portfolio value.

What is the penalty for filing Form 5471 late?

The Instructions for Form 5471 set a 10,000 dollar penalty for each annual accounting period of each foreign corporation. If the information is not filed within 90 days after the IRS mails notice of the failure, an additional 10,000 dollars applies for each 30-day period or fraction of one, capped at 50,000 dollars for each failure. Foreign taxes available for credit are also reduced by 10 percent, with further reductions for continued failure.

Form 5471: Nominee Shares and Beneficial Ownership

Q: Does a missed Form 5471 keep my whole US tax return open to assessment?

Potentially yes. Section 6501(c)(8) provides that where section 6038 information is not furnished, the assessment period for any tax with respect to any return, event or period to which that information relates does not expire before three years after the information is furnished. Where the failure is due to reasonable cause and not willful neglect, the extension is limited to the items related to the failure.

Form 5471 follows beneficial ownership, not the name printed on the share register, so a US person whose UK company shares sit in a nominee's name is almost always still the person with the filing obligation. The Internal Revenue Code measures stock ownership under section 958 - directly, indirectly and constructively - and none of those three tests asks whose name appears at Companies House. In the returns we prepare for US persons with UK company interests, the single most common reason a Form 5471 was never filed is the belief that a nominee arrangement moved the reporting duty onto somebody else. It did not.

Nominee shareholdings are ordinary UK commercial practice, not evasion. A corporate services provider subscribes for the first share on incorporation and holds it until the real shareholder is entered. A company secretary keeps a subscriber share while a shareholders' agreement is negotiated. A broker or private bank holds a client's position through a nominee company so that settlement works. A business partner holds shares for a colleague under a short declaration of nominee arrangement because the colleague was abroad on the day of completion. All of that is normal, lawful and usually documented. The US consequence is simply separate from the UK commercial reason, and it attaches to the person who has the economic benefit and the right to direct the vote.

Does the UK Share Register Decide Who Files Form 5471?

No. The register decides who the company must treat as its member; it does not decide who the IRS treats as the owner of the stock. Section 113 of the Companies Act 2006 at https://www.legislation.gov.uk/ukpga/2006/46/section/113 requires every company to keep a register of its members recording the required information about each member and the date the person was registered. That is a record of legal title. English company law deliberately keeps equitable interests off it, which is precisely why a register entry can name a nominee company that has no economic stake in the shares at all.

The US rules point the other way. Regulations section 1.6046-1, which supports the reporting of acquisitions and dispositions on Form 5471, states that in the case of stock held by a nominee the information required is to be furnished by the actual owner of the stock. The IRS Instructions for Form 5471 at https://www.irs.gov/instructions/i5471 then define every category of filer by reference to ownership within the meaning of sections 958(a) and 958(b), or to the acquisition, disposition and control tests in sections 6046 and 6038. Not one of those definitions mentions a register, a share certificate or a registrar.

Who Is a US Shareholder for Form 5471 Purposes?

A US shareholder, for the categories that matter most in UK company cases, is a US person who owns - directly, indirectly, or constructively, within the meaning of section 958(a) and (b) - 10 percent or more of the total combined voting power or value of shares of all classes of stock of the foreign corporation. Two points in that sentence do most of the damage in practice. First, the test is voting power or value, so a non-voting or restricted class still counts. Second, the test runs through three separate ownership channels, and a person can fail the first and still be caught by the second or the third.

Direct ownership under section 958(a)(1)(A) - stock owned outright by the US person, whether or not that person is the registered holder.
Indirect ownership under section 958(a)(2) - stock owned by a foreign corporation or foreign partnership is treated as owned proportionately by its shareholders or partners, so a UK holding company sitting between you and the trading company does not break the chain.
Constructive ownership under section 958(b), which applies the section 318(a) attribution rules with modifications: 10 percent is substituted for 50 percent in section 318(a)(2)(C), a corporation owning more than 50 percent of the voting power is treated as owning all the voting stock, and stock owned by a nonresident alien individual is generally not attributed to a US person.
Family attribution inside section 318 - stock of a spouse, children, grandchildren and parents is attributed, which regularly pulls a US spouse over the 10 percent line even where that spouse holds nothing on the register.

None of those channels care about registration. A nominee holding is dealt with before the section 958 analysis even begins: the shares are the beneficial owner's shares, and the section 958 tests are then run on that answer.

Which Category of Filer Does a Beneficial Owner Fall Into?

Category is not a label you choose once and reuse. It is tested against each foreign corporation for each of its annual accounting periods, and a beneficial owner behind a nominee can fall into more than one category in the same year. The Instructions for Form 5471 set out the categories as follows.

Category 2 - a US citizen or resident who is an officer or director of a foreign corporation in which a US person has acquired stock meeting the 10 percent stock ownership requirement, or an additional 10 percent or more in value or voting power.
Category 3 - a US person who acquires stock that takes them to or past the 10 percent stock ownership requirement, acquires that much in a single transaction, becomes a US person while meeting it, or disposes of enough stock to fall below it.
Category 4 - a US person who had control of the foreign corporation at any time during that person's tax year, meaning stock possessing more than 50 percent of the total combined voting power of all classes entitled to vote, or more than 50 percent of the total value of shares of all classes.
Category 5 - a US shareholder who owned stock in a controlled foreign corporation at any time during the foreign corporation's tax year and owned that stock on the last day in that year on which the corporation was a CFC, split into Categories 5a, 5b and 5c according to whether the shareholder owns under section 958(a) and whether the shareholder is related to a foreign-controlled CFC.
Category 1 - the parallel set for a section 965 specified foreign corporation, with the same 1a, 1b and 1c split.

The nominee point bites hardest on Category 3. The day the nominee arrangement is put in place - or the day the beneficial interest is acquired, even though the register is updated months later - can be the reportable event. The instructions note that a US person has acquired stock when that person has an unqualified right to receive the stock, even though the stock is not actually issued. A declaration of nominee arrangement dated in one tax year and a stock transfer form stamped in the next will produce two different filing answers, and the earlier date is usually the right one.

How Nominee Shareholdings Appear on Form 5471 Schedule B

Schedule B is where the divergence between register and beneficial ownership has to be shown on the face of the return, and it is the part of Form 5471 most often completed straight from Companies House data without thinking. Schedule B has two parts, and they ask different questions.

Part I, US Shareholders of Foreign Corporation, asks for the name, address and identifying number of the shareholder, a description of each class of stock held that matches the description entered in Schedule A column (a), the number of shares held at the beginning and at the end of the annual accounting period, and the pro rata share of subpart F income entered as a percentage.
Part II, Direct Shareholders of Foreign Corporation, asks for the name, address and identifying number of the shareholder including country of incorporation or formation where applicable, the same class description, and the shares held at the beginning and end of the annual accounting period.
The instructions add a Note: if any person, including the filer, is both a US shareholder and a direct shareholder of the foreign corporation, that person's information should be provided in both Schedule B, Part I and Part II.

Category 3 and Category 4 filers must complete Part I for US persons that owned, at any time during the annual accounting period, directly or indirectly through foreign entities, 10 percent or more of the total combined voting power of all classes of voting stock, or 10 percent or more of the total value of shares of all classes. Category 1a, 1c, 3, 4, 5a and 5c filers must complete Part II and report the direct shareholders of the foreign corporation. Category 4 filers should list all direct owners of the CFC; Category 1a, 3 and 5a filers should list all direct owners of the SFC or CFC through which the filer indirectly owns it as described in section 958(a)(2); and where the filer is itself a direct owner, the filer's own direct ownership goes in as well.

There is a further point that catches nominee incorporations. Category 3 filers must attach a statement giving the amount and type of any indebtedness the foreign corporation has with the related persons described in Regulations section 1.6046-1(b)(11), and the name, address, identifying number and number of shares subscribed to by each subscriber to the foreign corporation's stock. On a UK incorporation the subscriber is very often the formation agent or company secretary holding a single share as nominee. That subscriber has to be named.

In the returns we prepare we report the beneficial owner as the owner, consistent with the actual owner rule in Regulations section 1.6046-1, and we attach a short statement to the return explaining the nominee arrangement, naming the registered holder and stating the date the beneficial interest arose. An unexplained difference between a public UK register and a US information return is the kind of thing that turns a clean remediation into a correspondence file.

The Private Bank or Broker Nominee: Shares You Have Never Seen on a Register

The first gap almost nobody writes about is the platform holding. Where a UK company's shares are held through a broker or a private bank, the registered member is the institution's nominee company, and the client may hold a pooled interest alongside other clients or a designated account in their own reference. The client never receives a share certificate, never appears on the register of members, and often never sees a Companies House entry with their name anywhere on it. What they receive are contract notes, custody statements and a valuation.

For listed holdings this rarely matters, because a retail position in a large listed company will not approach 10 percent of voting power or value. The exposure sits somewhere else: unlisted or closely held UK company shares placed into a private bank custody arrangement, founder shares parked with a wealth manager after a transaction, advisor or employee equity in a private UK company administered through a platform, and shares transferred into a nominee account as part of a lending or margin arrangement. In each of those, a US person can beneficially own a double-digit percentage of a foreign corporation and have no register entry anywhere in the world.

A custody statement on its own will not support a Form 5471, so the evidence pack we ask for in these cases is specific.

A holdings statement identifying the issuer by full legal name and company number, not by ticker or internal product code.
Written confirmation from the provider whether the holding is pooled or designated, and the exact name of the registered nominee company.
The number of shares held and the share class, so the percentage can be computed against the issuer's total issued share capital rather than against portfolio value.
The date the holding was acquired or transferred into the nominee account, which drives Category 3 and fixes the first reportable year.
The voting arrangements - whether the client instructs the nominee how to vote - because voting power is tested separately from value.
The issuer's own confirmation statement and share capital history from Companies House, which supplies the denominator for the percentage test.

Why the PSC Register and Section 958 Give Different Answers

The second gap is reconciliation. Preparers and clients reach for the persons of significant control register because it looks like a beneficial ownership register, and in UK terms it is one. It is simply not calibrated to the US test. The PSC regime works on the specified conditions in Schedule 1A to the Companies Act 2006 at https://www.legislation.gov.uk/ukpga/2006/46/schedule/1A, and the guidance for companies sits at https://www.gov.uk/guidance/people-with-significant-control-pscs. Critically, paragraph 19 of that Schedule provides that a share held by a person as nominee for another is to be treated as held by the other and not by the nominee - a genuine look-through, and one reason the PSC register feels like the right source. It still produces a different answer from section 958, for structural reasons.

Threshold. The first and second specified conditions bite at more than 25 percent of the shares or more than 25 percent of the voting rights. US shareholder status bites at 10 percent of voting power or value. A US person beneficially owning 12 percent of a UK company is a Form 5471 concern and is not a PSC at all.
Attribution. The PSC regime has no family attribution. Section 318 attributes stock among spouse, children, grandchildren and parents, so a US couple holding 8 percent each can both be US shareholders while neither is a PSC.
Precision. PSC disclosure is banded - over 25 percent up to 50 percent, over 50 percent up to 75 percent, and 75 percent or more. Form 5471 needs an exact share count at the beginning and end of the accounting period and an exact pro rata percentage for subpart F.
Control. Category 4 control means more than 50 percent of voting power or of value. The third specified condition is the right to appoint or remove a majority of the board, which can be held by someone with a small shareholding and can be absent in someone holding 60 percent.
Subject matter. The PSC register is a company obligation, recorded by the company and filed at Companies House. Form 5471 is a personal obligation attached to a US income tax return and tested separately for each US person.
Timing. The PSC register reflects the position as notified and confirmed. Form 5471 tests status at specific moments inside the foreign corporation's accounting period, including the last day in the year on which it was a CFC.

So the two registers routinely disagree, and when they do, the section 958 answer is the one that drives the filing. We document the reconciliation rather than suppress it: a one-page schedule showing the Companies House position, the beneficial ownership position, the section 958(a) result, the section 958(b) result and the category conclusion for each year. That schedule is what makes a reasonable cause position credible three years later.

What UK Evidence Does a Preparer Actually Work From?

Reconstructing beneficial ownership for a UK company is a documentary exercise, and the documents usually exist even where the client believes nothing does. Free Companies House data is at https://www.gov.uk/get-information-about-a-company, which gives the registered office, current and resigned officers, document images, previous company names and the full filing history.

The company's own register of members under section 113, which is the primary record of legal title and is kept by the company, not by Companies House.
The PSC register and the PSC information filed at Companies House, used as a cross-check rather than as the answer.
Share certificates and stock transfer forms, with the stamping position. HMRC guidance at https://www.gov.uk/guidance/stamp-duty-on-shares explains the stock transfer form certificates, including that certificate 1 applies where the consideration given for the shares is 1,000 pounds or less and the transfer does not form part of a larger transaction exceeding that amount, and that a form on which duty is payable must be sent to HMRC within 30 days of being signed and dated.
The confirmation statement and any SH01 return of allotment, which together rebuild the share capital history and give the denominator for every percentage test.
The nominee documentation itself - the declaration of nominee arrangement, the nominee agreement, the corporate services provider's engagement terms and any power of attorney over the shares.
Board minutes, the shareholders' agreement, dividend vouchers and the bank statements showing who actually received the dividends, which is often the cleanest evidence of beneficial entitlement.

Where Companies House and the US analysis diverge, the divergence is usually explained by one of three things: a beneficial transfer that was agreed but never registered, a subscriber share still sitting with the formation agent years after incorporation, or a nominee holding that the PSC regime does treat as the beneficial owner's but which falls under the 25 percent condition and is therefore invisible on the public record.

A Worked Scenario

The following is an illustration, not a client file, and every figure in it is assumed. A US citizen living in London owns a UK trading company with 100 ordinary shares in issue. On the register: a formation agent holds 1 subscriber share as nominee for her, she is registered with 40 shares, her US citizen spouse is registered with 20, and an unrelated UK business partner holds 39. She has never treated the subscriber share as hers, because the formation agent's name is the one on the register.

The section 958 analysis ignores the register. Beneficially she owns 41 shares, because the subscriber share is held for her, and that is 41 percent under section 958(a)(1)(A). Section 318 family attribution then adds her spouse's 20 percent, giving her 61 percent constructively for US shareholder purposes. Her spouse, holding 20 percent directly, is separately a US shareholder in his own right. US shareholders together beneficially own 61 percent of the voting power and value, so the company is a controlled foreign corporation. She has control for Category 4 purposes and she is a Category 5a filer as a US shareholder of a CFC. Her spouse has a Category 5 obligation of his own, which may be capable of being satisfied through the multiple filer mechanism.

The PSC register for the same company would show two people: her, above the 25 percent condition, and the UK partner at 39 percent. Her spouse's 20 percent is below the threshold and appears nowhere. The formation agent's nominee share is treated as hers under paragraph 19 but is far too small to change any band. Anyone reading the public UK record would conclude that the company has two significant owners and no obvious US shareholder group. The US answer is that a CFC exists, that two US shareholders exist, and that at least one Form 5471 is due for every open year.

When Can Another Person's Form 5471 Cover You?

The instructions permit one person to file Form 5471 and the applicable schedules for other persons where that person has the same filing requirements as, or greater filing requirements than, the other persons. If you and one or more other persons must furnish information for the same foreign corporation for the same period, a joint information return containing the required information may be filed with your tax return or with the tax return of any one of the other persons. For Category 3 filers, the required information may only be filed by another person having an equal or greater interest, measured in terms of value or voting power of the stock.

The mechanics matter, and this is where nominee files go wrong. The person who files must complete item H, Person(s) on Whose Behalf This Information Return Is Filed. All persons identified in item H must attach a statement to their own income tax return that includes the information described in the instructions for item H, and must also complete a separate Schedule P and attach it to that statement if they qualify as a Category 1a, 1b, 4, 5a or 5b filer. A separate Schedule I and a separate Schedule H-1 are required for each person described in Category 4, 5a or 5b.

A Category 3, 4 or 5 filer does not have to file where it owns no direct interest in the foreign corporation, is required to furnish the information solely because of constructive ownership from another US person, and that US person files Form 5471 reporting all of the information required of the excepted filer.
A Category 1 or 5 filer does not have to file where it owns no direct or indirect interest and is required to file solely because of constructive ownership from a nonresident alien.
No statement is required to be attached to the tax return of a Category 1, 3 or 5 filer claiming one of those constructive ownership exceptions.
The instructions carry an explicit warning: any person required to file Form 5471 and Schedule J, M or O who agrees to have another person file the form and schedules for them may be subject to the penalties if the other person does not file a correct and proper form and schedule.

A beneficial owner behind a nominee rarely qualifies for the constructive owner exceptions, because each of those exceptions requires the filer to own no direct interest. Beneficial ownership of shares held by a nominee is direct ownership for section 958(a) purposes. That is the trap: the client assumes the exception applies precisely because their name is not on the register, when the register is not what the exception measures.

What Happens If Form 5471 Was Never Filed?

The penalty regime under section 6038 is mechanical, and it is set out in the Instructions for Form 5471.

A 10,000 dollar penalty for each annual accounting period of each foreign corporation for failure to furnish the information required by section 6038(a) within the time prescribed.
If the information is not filed within 90 days after the IRS mails a notice of the failure, an additional 10,000 dollar penalty per foreign corporation for each 30-day period, or fraction of one, during which the failure continues after the 90-day period has expired, limited to a maximum of 50,000 dollars for each failure.
A reduction of 10 percent of the foreign taxes available for credit under sections 901 and 960, with an additional 5 percent reduction for each 3-month period, or fraction of one, during which the failure continues more than 90 days after the IRS mails notice.
Where section 6046 information reported on Schedule O is missing, a 10,000 dollar penalty for each such failure for each reportable transaction, with the same 90-day and 30-day structure and the same 50,000 dollar maximum.
Penalties under section 6662(j) for undisclosed foreign financial asset understatements, which are not imposed on any portion of an underpayment where the taxpayer demonstrates reasonable cause and good faith for that portion.
Criminal penalties under sections 7203, 7206 and 7207 may apply for failure to file the information required by sections 6038 and 6046.

The quieter exposure is the statute of limitations. Section 6501(c)(8) provides that where information required under section 6038 and the other listed sections is not furnished, the time for assessment of any tax with respect to any tax return, event or period to which that information relates does not expire before three years after the date the information is furnished. That is not confined to the foreign corporation items. A single missed Form 5471 for a UK company held through a nominee can leave an entire return open. Where the failure is due to reasonable cause and not willful neglect, the extension applies only to the item or items related to the failure, which is a strong practical reason to build and keep the reasonable cause file rather than to assume it.

Reasonable cause is not asserted by ticking a box. Regulations section 1.6038-2(k)(3) requires an affirmative showing of all the facts alleged as reasonable cause for the failure, in a written statement. For a nominee case, that statement has to explain what the client was told, by whom and when, what the UK documents actually said, and why a reasonable person in those circumstances would have concluded that the shares were not theirs to report.

How Missed Form 5471 Years Get Fixed Alongside Missed Returns

There are two main lanes, and the choice is driven by whether the US tax returns themselves were also missed or wrong, and by residence.

Where the income tax returns were filed and complete but the information return was omitted, the IRS delinquent international information return submission procedures at https://www.irs.gov/individuals/international-taxpayers/delinquent-international-information-return-submission-procedures apply. Taxpayers who are not under civil examination or criminal investigation and who have not already been contacted by the IRS about the delinquent information returns should file through normal filing procedures, with the delinquent Form 5471 attached to an amended income tax return filed according to the instructions for that amended return. A reasonable cause statement may be attached to each delinquent return. The IRS is explicit that penalties may be assessed in accordance with existing procedures, so a well-built reasonable cause statement and a documented ownership reconciliation matter more here than anywhere else.

Where returns themselves were missed or understated and the taxpayer meets the non-residency test, the Streamlined Foreign Offshore Procedures are the route. The IRS page at https://www.irs.gov/individuals/international-taxpayers/u-s-taxpayers-residing-outside-the-united-states requires, for US citizens and lawful permanent residents, that in one or more of the relevant years the individual did not have a US abode and was physically outside the United States for at least 330 full days. The submission is delinquent or amended returns for each of the most recent three years for which the due date has passed, together with all required information returns - the IRS names Forms 3520, 5471 and 8938 - plus delinquent FBARs for each of the most recent six years for which the FBAR due date has passed, and a Form 14653 certification that the failures resulted from non-willful conduct. Eligible taxpayers will not be subject to failure-to-file and failure-to-pay penalties, accuracy-related penalties, information return penalties or FBAR penalties. The general Streamlined page sits at https://www.irs.gov/individuals/international-taxpayers/streamlined-filing-compliance-procedures, and we set out how we scope these engagements at us-uktax.com/streamlined-foreign-offshore-procedures and us-uktax.com/irs-streamlined-filing.

Either way, the Form 5471 years and the return years have to move together. Filing three years of returns and leaving the fourth and fifth years of Form 5471 unfiled does not close the section 6501(c)(8) clock on those years, and filing a Form 5471 in isolation while an amended return still carries the wrong subpart F or GILTI figure creates a mismatch the IRS will see immediately. How we scope cross-border company compliance work on these files is set out at us-uktax.com/cross-border-tax-planning.

How We Handle Nominee Cases in Practice

Reconstruct beneficial ownership from the nominee documents first, and look at the register second.
Run section 958(a) and section 958(b) separately and record both results for every year, because the categories turn on which one is met.
Reconcile the Companies House and PSC position to the section 958 result on a single schedule, and keep that schedule with the file.
Test the filer category year by year rather than carrying last year's conclusion forward, because a nominee share being transferred into the client's own name is itself a Category 3 event.
Decide the multiple filer position in writing, complete item H properly, and make sure every person named in item H attaches the required statement to their own return.
Price the section 6501(c)(8) exposure before choosing between the delinquent information return route and a streamlined submission.
Attach a short nominee statement to the return so that the difference between the public UK record and the US return is explained on the face of the filing rather than in later correspondence.

The register is a UK administrative record. Form 5471 is a US ownership return. Nominee shareholdings are the point at which the two stop agreeing, and the US answer is the one carrying a 10,000 dollar per year penalty and an open assessment period behind it. If a US person can direct the vote or take the economic benefit of shares in a UK company, the starting assumption should be that a Form 5471 analysis is required, whoever the registrar thinks owns the shares.