Form 5472 for a Foreign-Owned US C-Corp: What a VC-Backed Startup Actually Reports (2026)

The short answer: Your Delaware C-corp files Form 5472 if a foreign person owned 25% or more, by vote or value, at any point in the year, and the company had a reportable transaction with that person or another related party, foreign or domestic. File one form per related party with Form 1120, due April 15 for a calendar-year company. The initial penalty is $25,000 per required form, per tax year.

That is the whole rule. The rest of this page is about applying it to the company you actually have.

Most of what ranks for "Form 5472" is written for one situation: a single foreign individual who owns a US LLC. That owner files a pro forma 1120 every year, and the formation itself is reportable. A venture-backed C-corp after a flip is a different filer. You have several shareholders, some foreign and some not. You may have founders who have moved to New York. You probably own an Israeli or UK subsidiary that does the engineering. Each of those facts changes who counts, what counts, and how many forms you file.

By Ronnie Jaffa, Co-Founder & CEO ·

What to remember

• A foreign shareholder at 25% or more makes the company a reporting corporation. A form is due only in a year the company has a reportable transaction with a related party, foreign or domestic.
• Founder loans, salaries, fees and reimbursements are the usual reportable transactions. Equity investment generally is not, on the instructions as written.
• Payments to a 100%-owned Israeli or UK subsidiary can be reported on Form 5471 Schedule M instead of a 5472, as long as Schedule M reports all of them.
• The initial penalty is $25,000 per required form (one per related party), per tax year. An unfiled form also keeps the return open to assessment.
• For a calendar-year company, the 2026 forms are due April 15, 2027, or October 15, 2027 with Form 7004.

This guide walks through the C-corp version in the order a finance lead would check it:

1. Are we a reporting corporation this year?

2. Which of our transactions are reportable, and with whom?

3. Does our foreign subsidiary need a 5472, or something else?

4. How many forms is that, when are they due, and what happens if one is missed?

It reflects the IRS instructions revised December 2024, the current version for 2025 returns, and the December 2026 draft revision. It is general information, not advice for your company; the answers turn on facts a page cannot see.

Does your C-corp have to file Form 5472?

A C-corp files Form 5472 for a year only when both answers are yes.

Question 1: Is the company 25% foreign-owned? It is if at least one foreign person owns, directly or indirectly, 25% or more of the total voting power or 25% or more of the total value of all classes of stock, at any time during the tax year. One shareholder has to cross the line. Several foreign shareholders at 15% each do not add up to a reporting corporation unless ownership is attributed between them (more on that below).

Question 2: Did the company have a reportable transaction with a related party? Related parties include every 25% foreign shareholder, people and entities related to the company or to those shareholders under the tax code's control tests, and the company's own subsidiaries. They can be US persons as well as foreign ones. A reportable transaction is a payment or receipt of the kinds listed on the form: services, loans, interest, rents, royalties, sales, and the rest.

Here is a typical cap table a few months after an Israel-to-Delaware flip, using issued shares.

The company answers yes to question 1 twice over: it has two 25% foreign shareholders. Whether it files, and how many forms, depends entirely on question 2. If neither Israeli founder received or paid anything from the C-corp during the year, and the company had no other related-party dealings, the company has no Form 5472 to file for that year. It still files its Form 1120.

The phrase "at any time during the tax year" matters after a round. If the seed closes in June and dilutes the CTO from 31% to 24%, the CTO was still a 25% foreign shareholder for the year, and his transactions for the whole year are in scope.

Two boxes at the top of the form follow from the same cap table. Line 2 asks whether any foreign person owned 50% or more; here, no single founder does. Line 3 is only for a foreign-owned disregarded entity, which a C-corp is not.

Who counts as a 25% foreign shareholder after a flip?

The cap table is the starting point, not the answer. Four things move founders and investors across the 25% line.

1. Whether the person is "foreign" at all. For Form 5472 a foreign person is, among others, an individual who is neither a US citizen nor a US resident, and any company or partnership organized outside the US. Residency here is tax residency: a green card, or enough days in the US to meet the substantial presence test. A founder who relocates to New York on an O-1 can become a US resident partway through the year. The year they move is often a dual-status year, and whether the company is 25% foreign-owned can turn on the residency start date. Settle that date with the founder's own tax adviser before the company's return is prepared.

2. Vote or value, whichever is higher. The test is met on either measure. A founder whose common stock carries extra votes can be a 25% shareholder by vote while holding less than 25% of value, and preferred stock with a large liquidation preference can push an investor over the line on value.

3. Attribution. Section 318's constructive ownership rules apply, as modified by the instructions (the 10% entity threshold and the limit on attribution to US persons below). In practice:

• Family. Stock held by a spouse, children, grandchildren and parents is counted as owned by the individual. A founder at 20% whose spouse holds 6% is a 26% shareholder. Siblings are excluded under Section 318's family attribution rules but may be included under the additional attribution rules applicable to Form 5472.
• Entities. Stock held by a company is counted as owned proportionally by anyone holding 10% or more of that company (the form lowers the usual 50% threshold to 10%). Stock held by a partnership or fund is attributed to its partners in proportion to their interests.
• Options. Section 318 treats a person with an option to acquire stock as owning it, so large founder option grants can matter at the margin.
• Limit on attribution to US persons. Section 318(a)(3)(A) to (C), which treats a partnership, estate, trust or corporation as owning stock held by its owners, is not applied to make a US person the owner of stock a foreign person holds. Other attribution rules, including family attribution, still apply.

4. Holding companies and funds. Many founders hold their shares through a personal company in their home country. That company is the direct 25% foreign shareholder, reported in Part II lines 4 and 5. The founder behind it is usually the "ultimate indirect" 25% foreign shareholder, reported in lines 6 and 7: the 25% shareholder whose ownership is not attributed to any other 25% foreign shareholder. A foreign venture fund at 25% or more raises the same question one level up, and can mean tracing ownership through the fund's general partner and limited partners.

Each direct and ultimate indirect 25% foreign shareholder appears in Part II. Each related party with which the company transacted gets its own form, identified in Part III.

Which transactions go on Form 5472?

For a C-corp, the form asks about money moving between the company and a foreign related party, plus anything exchanged for property, services or less than full value. In a seed or Series A company that usually means a short list. Reportable transactions with a US related party also require a form, but they are not itemized in Parts IV and VI; the form identifies that party in Part III. The table below covers foreign related parties.

Three rules from the instructions shape the numbers.

• Accrual, not cash. An accrual-basis company reports accrued payments and receipts, which is what most venture-backed companies use.
• Small amounts and estimates. Any category of $50,000 or less with a related party can be reported as "$50,000 or less." Where the actual amount cannot be determined, a reasonable estimate is one between 75% and 125% of the real figure.
• Dollars, with the rate shown. All amounts are in US dollars, with an attached schedule of the exchange rates used. Shekel or sterling payments to founders need that schedule.

Capital contributions: the question most guides get wrong

When the founders buy their shares, or a foreign parent puts in more capital, is that a Form 5472 transaction for a C-corp? On the instructions as written, generally not.

• Contributions and distributions are named only in Part V, and Part V is only for a foreign-owned US disregarded entity (the single-member LLC case).
• None of the Part IV categories is an equity investment.
• The catch-all lines 21 and 35 cover other amounts only to the extent they are taken into account in determining taxable income. Paid-in capital is not.

This is where LLC-focused content misleads C-corp founders: for an LLC, the contribution is reportable and is often the only transaction in year one. Practitioners do differ on C-corp equity, and some attach a disclosure statement as a precaution. Whichever position your preparer takes, write it down and apply it every year. A diligence reviewer will ask why the 5472 is or is not there, and a consistent, documented position is the right answer.

Does your Israeli or UK subsidiary need a Form 5472?

After a standard flip, the Delaware company owns 100% of the original Israeli or UK company, and that company now does the engineering under a cost-plus services agreement. Every monthly payment from the parent to the subsidiary is a related-party transaction. It usually does not go on Form 5472.

The instructions exempt a reporting corporation from filing a 5472 for a related foreign corporation when a US person that controls that foreign corporation files Form 5471 for the year and completes Schedule M showing all the reportable transactions between them. In a flip, the US parent is that US person. It files Form 5471 for its subsidiary anyway, so the subsidiary's transactions are reported once, on Schedule M.

Two consequences follow.

• The flip creates a second filing, not a lighter one. Form 5471 is longer than Form 5472 and carries its own initial penalty of $10,000 per foreign corporation per year. Additional penalties may apply. The exception only works if Schedule M is complete. A 5471 filed without Schedule M leaves the 5472 exposure in place.
• Structures that are not a clean flip do not get the exception. If the founders kept the Israeli company and own it directly, alongside the US company, the US company does not control it and files no 5471 for it. The two companies are still related through common ownership, so payments between them go on a Form 5472. A foreign affiliate the US company owns less than half of is not automatically in the same position. Whether a 5472 is needed depends on whether the affiliate is a related party under the control tests in sections 267, 707 and 482, and whether the Schedule M exception applies.

The Form 5471 guide covers the subsidiary filing in full, including Schedule M and the filer categories a startup parent falls into.

Worked example: one company, one year, how many forms

The answer for the company in the cap table above is one form. Here is how it gets there for tax year 2026.

On the CEO's form, the loan is the detail that trips people up. Made in January and repaid in August, it shows a zero balance at both the start and the end of the year. The outstanding-balance method would report nothing. The monthly-average method, the other method the instructions allow, captures it: seven months at $60,000 over twelve months is $35,000. Both that figure and the $8,400 of reimbursements fall under $50,000, so each line can read "$50,000 or less." Because the loan carried no interest, the preparer needs to determine whether it is a less-than-full-consideration transaction; if it is, Part VI must be completed, with an attached schedule describing the loan. Line 1g, the total number of Forms 5472 filed, is 1.

Three small changes would alter the count:

• If the US company had paid the CTO's salary, the CTO becomes a related party with a reportable transaction, and the company files a second form.
• If the founders owned the Israeli company directly instead of through the US parent, the $1.4 million goes on its own Form 5472, not Schedule M.
• If the CEO held his shares through a personal Israeli company, that company is the direct 25% foreign shareholder in Part II and the CEO is the ultimate indirect one. Still one form, two entries in Part II.

And the cost of getting the count wrong: each missing form carries an initial $25,000 penalty for the year. Two founders' forms missed for three years is six separate failures, or $150,000, before any continuation penalty.

When is Form 5472 due, and how is it filed?

Form 5472 has no deadline of its own. It is due with the company's Form 1120, including extensions.

Fiscal-year companies follow their own Form 1120 due date. A Form 7004 extension for the 1120 also extends the 5472s attached to it. If your 2025 return was extended and has not been filed, the October 15, 2026 date has passed; the catch-up section of the never-filed guide is the next read.

How it is filed differs by entity, and this is another place LLC content leads C-corps astray.

• C-corp. The 5472s are attached to the 1120 and can be filed electronically with it. The 1120 is filed every year whether or not the company had income; a pre-revenue startup with losses still files.
• Foreign-owned single-member LLC. It files a pro forma 1120 with only the name, address and two items completed, cannot e-file the 5472, and must fax or mail it to a dedicated IRS unit in Ogden. None of that applies to your C-corp.

A late 1120 means a late 5472, and late filing is itself a failure to file. A complete form attached to a late return can still draw the $25,000 penalty. Penalty notices for it commonly arrive as a CP215; what to do in the 30 days after one has its own guide.

What does a missed Form 5472 cost, and why does diligence ask?

The initial penalty is $25,000 per required form, per tax year, for late, missing or substantially incomplete reporting of qualifying related-party transactions. Failing to keep the required records carries the same penalty. Each related party is a separate failure, which is why the count of forms matters more than the length of any one of them. Missing a filing can be expensive, even when the underlying tax liability is zero.

If the IRS sends a notice and the failure continues more than 90 days afterwards, a further $25,000 accrues for every 30-day period, or part of one, per related party. The statute sets no ceiling on that continuation penalty.

The penalty is not the part that worries an investor's lawyers. The statute of limitations is.

• Normally the IRS has three years to assess tax on a filed return.
• When information required under section 6038A is not furnished, that clock does not run out on the return, or on any tax or event the information relates to, until three years after the IRS receives the information.
• If the failure had reasonable cause, the extension is limited to the items related to the failure. If it did not, it covers the whole return.

An unfiled 5472 therefore leaves the company's tax years open, possibly indefinitely. That is a contingent liability an acquirer or a Series A lead has to price, and it is why tax diligence questionnaires ask whether every required information return has been filed. It is also why "we were small and had no tax to pay" is not a defence: the form exists to report related-party dealings, whether or not tax is due.

Relief exists, but it is narrower than founders expect.

• Reasonable cause. The company must show in writing, under penalties of perjury, that it acted in good faith and why the failure happened. The IRS weighs the specific facts. Relying on a provider who was engaged to file, and did not, generally is not reasonable cause by itself; an engagement letter that names the form, and a record of the company's own compliance efforts, can support a request but do not guarantee relief.
• First-time abatement. The IRS's first-time abatement policy generally does not reach event-based information returns like Form 5472. The exception is narrow: where the penalty was assessed automatically because the 5472 rode on a late Form 1120, the Internal Revenue Manual allows relief if the 1120's own late-filing penalty is abated under first-time abatement, or would have qualified. A company that filed its 1120 on time but left out the 5472 does not get that route.

The practical rule: file every year the test is met, file on time, and keep the decision record for years you conclude no form is due.

Records, reference IDs, and what changes on the form for 2026

Records. Every reporting corporation must keep books that establish the correct tax treatment of its related-party transactions. Two relief rules remove the heavier, specialized record requirements and the requirement that foreign related parties authorize the company as their agent for IRS information requests. Neither removes the duty to file the form.

Most seed and Series A companies meet the first. What they still need is the evidence behind each line: the founder loan agreement and its balances, payroll records for founder salaries, receipts for reimbursements, the intercompany agreement, and the exchange-rate schedule.

Reference ID numbers. Israeli and UK founders often have no SSN or ITIN. Part II and Part III then take a reference ID number that the company assigns itself.

• No application to the IRS is needed.
• Alphanumeric only, no spaces or special characters, up to 50 characters.
• The same number must be used for that person every year, and a retired number is never reused for someone else.

A simple convention, such as the company's EIN suffix followed by the founder's initials and a sequence number, kept in the compliance calendar, avoids a new number appearing each year when the preparer changes.

The 2026 revision. The December 2024 instructions are the current version. The IRS has posted draft revisions of the form and instructions dated December 2026. The drafts change two Part VII questions: lines 38a to 38c are rewritten around the section 1059A rules for goods imported from related parties, and line 41a replaces "foreign-derived intangible income" with "foreign-derived deduction eligible income," following the section 250 changes in the One Big Beautiful Bill Act. Neither change alters who files or what counts as a reportable transaction. Drafts are not for filing; use the revision the IRS designates for the year you are reporting.

Who owns this filing at your company

Form 5472 is rarely missed because it is hard. It is missed because no one provider sees all the inputs.

• The formation service formed the company and handed it over. Filing annual returns was not in its scope.
• The bookkeeper recorded the founder's loan as a liability. Nothing in that entry says "reportable."
• The tax preparer meets the company in March, asks whether there are foreign shareholders, and works from the answer. The cap table, the founders' residency dates and the loan agreement sit with three other people.

The filing works when one person holds the whole picture: who owns what at every point in the year, who is foreign on which date, and every payment between the company and those people. Before the 1120 is prepared, that person should be able to answer these six questions in writing:

• Who held 25% or more by vote or value at any point in the year, after attribution?
• Which of those shareholders were foreign persons, and from what date?
• What did the company pay to, or receive from, each of them and their related entities?
• Is every subsidiary's intercompany activity on a Form 5471 Schedule M?
• What is the company's written position on equity contributions?
• Is a reference ID assigned and recorded for every foreign party without a US tax number?

The 14-item pre-filing checklist expands each of these.

At Naveh, Form 5472 sits on the same calendar as the monthly close, the 1120, Form 5471 and Delaware franchise tax, with a named owner, and a CFO reviews it before it is filed. If you cannot answer one of the six questions above for your company, book a free 30-minute review. You get a written summary of what is filed, what is late, and what it costs to fix, whether or not you hire us.

Short answers

Does a C-corp file Form 5472 if it had no transactions with its foreign shareholders? Not necessarily. No form is due only if the company had no reportable transactions of the kinds listed in Parts IV and VI with any related party, foreign or domestic. Dealings with any other related party, including a US one, can still require a form. The company still files its Form 1120. A foreign-owned single-member LLC is different: its formation and funding are reportable, so it usually files from year one.

Is Form 5472 filed on its own? No. It is attached to the Form 1120 and shares its due date, including the Form 7004 extension.

Can a C-corp e-file Form 5472? Yes, attached to an electronically filed Form 1120. Only foreign-owned disregarded entities are barred from e-filing it.

Is a capital contribution from a foreign parent reportable on a C-corp's 5472? Generally not, on the instructions as written: contributions appear only in Part V, which applies to disregarded entities. Practice varies, so record the position your preparer takes and apply it every year.

Is the $25,000 penalty per form? It is an initial $25,000 per required form, per tax year, and the company files one form per related party. After an IRS notice, a further $25,000 per form accrues for each 30-day period the failure continues beyond 90 days.

Do we file a Form 5472 for our Israeli subsidiary? Generally not, if the US parent files Form 5471 for the subsidiary and its Schedule M reports every transaction between them. If Schedule M is missing or incomplete, the 5472 requirement stays.

A founder moved to the US this year. Are they still a 25% foreign shareholder? Possibly, for part of the year. Once a founder is a US tax resident they are no longer a foreign person, but the test looks at any time during the year. Their residency start date decides it.

Sources

All checked on 6 November 2026.

• IRS, Instructions for Form 5472 (Rev. December 2024): definitions, exceptions, filing, penalties, reference IDs, Part IV to VI rules
• IRS, Form 5472 (current revision): line numbers in Parts I to VII
• IRS, draft Instructions for Form 5472 (Rev. December 2026) and draft Form 5472 (Rev. December 2026): What's New, lines 38 and 41a
• eCFR, 26 CFR 1.6038A-1: small corporation and de minimis rules
• eCFR, 26 CFR 1.6038A-4: penalty per related party, reasonable cause statement
• Cornell LII, 26 U.S.C. 6038A: $25,000 penalty and continuation penalty
• Cornell LII, 26 U.S.C. 6501: section 6501(c)(8), assessment period held open
• Cornell LII, 26 U.S.C. 6038: $10,000 Form 5471 penalty
• The Tax Adviser (AICPA), Penalty relief for Forms 5471, 5472, and 8865, July 2021: first-time abatement exception for systemically assessed penalties