Form 5472 Reasonable Cause: The Small-Corporation Rule

Treasury Regulation § 1.6038A-4(b)(2)(ii) tells the IRS to apply the Form 5472 reasonable cause exception liberally to a small corporation, one with gross receipts of $20,000,000 or less, that had no knowledge of the requirement, has limited presence in and contact with the United States, and promptly and fully complies with IRS requests. It softens the test. It guarantees nothing.

Most late-filing advice stops at "write a reasonable cause letter". It skips the one sentence in the regulations that fits exactly this owner: a small foreign-owned business with little US footprint that did not know the filing existed.

The stakes are fixed by law. The IRS Instructions for Form 5472 state that a $25,000 penalty applies to a reporting corporation that fails to file Form 5472 when due, and that a further $25,000 applies, with respect to each related party, for each 30-day period (or part of one) that the failure continues more than 90 days after IRS notification. A foreign-owned single-member LLC is a reporting corporation under those instructions. If you already know which years are missing, you can start your catch-up filing now. If you are unsure which route fits your situation, the free late-filing route checker asks five questions and points you to one.

What does the small-corporation rule say?

The rule directs the IRS to "apply the reasonable cause exception liberally" to a small corporation that meets three conditions. It sits in Treas. Reg. § 1.6038A-4(b)(2)(ii), the regulation that governs penalty relief for Form 5472 failures. The text addresses the official deciding the penalty by an older title, the "District Director", but the instruction is unchanged.

The three conditions, in the regulation's own order:

The corporation had no knowledge of the requirements imposed by section 6038A.
It has limited presence in and contact with the United States.
It promptly and fully complies with all IRS requests to file Form 5472 and to furnish books, records or other materials relevant to the reportable transaction.

"Liberally" describes how generously the facts should be read. It is not a separate form of relief with its own application. You still ask for relief the ordinary way: § 1.6038A-4(b)(2)(i) requires an affirmative showing of all the facts, in a written statement containing a declaration that it is made under penalties of perjury.

Who counts as a small corporation for Form 5472?

A small corporation is one "whose gross receipts for a taxable year are $20,000,000 or less". That single sentence is the regulation's whole size test, and it is measured year by year.

A foreign-owned single-member LLC is treated as a corporation for the Form 5472 rules. The Form 5472 instructions define a reporting corporation to include a foreign-owned U.S. disregarded entity, so the natural reading is that the LLC's own gross receipts for the year are the figure to test.

For scale, two illustrations. A consulting LLC with $80,000 of client receipts in a year is at 0.4% of the threshold. An online store with $3,000,000 of sales is at 15%. Both are small corporations for that year.

Keep each year's bank and payment-processor statements so the figure is easy to check.

What do the three conditions look like in practice?

Each condition is a fact you show with documents, not a box you tick. The table maps each condition to the kind of evidence that usually speaks to it. It is a working checklist we use, not a list published by the IRS.

Condition in § 1.6038A-4(b)(2)(ii)	What it asks	Evidence that speaks to it
No knowledge of the section 6038A requirements	You did not know the LLC had to file Form 5472	Formation-service invoice showing no tax filing was included; no earlier Form 5472 filings; the date and way you learned of the rule
Limited presence in and contact with the United States	The business is run from outside the US	Owner's foreign address; no US office, staff or property; a US footprint limited to a registered agent and a bank or payment account
Prompt and full compliance with IRS requests	You file and reply quickly once asked	Fax receipts for every missing year; copies of replies sent before each IRS deadline

The first two conditions look backward. The third keeps applying after you file: an owner who lets an IRS letter sit unanswered weakens the one condition fully within their control.

Does the small-corporation rule guarantee penalty relief?

No. The same regulation says the reasonable cause decision "is made on a case-by-case basis, taking into account all pertinent facts and circumstances." Meeting the three conditions improves how your facts are read. It does not bind the IRS to a result.

Two IRS pages set realistic expectations. The IRS delinquent international information return submission procedures (DIIRSP) page says that "penalties may be assessed in accordance with existing procedures", and that during processing "penalties may be assessed without considering the attached reasonable cause statement." The IRS international information reporting penalties page adds that "not all International Information Reporting Penalties qualify for reasonable cause" and states there is no maximum Form 5472 penalty.

So a strong statement can still be followed by a penalty notice. The statement then becomes the backbone of the reply, which is why it should be written with dates and documents the first time.

What else does the regulation accept as reasonable cause?

Beyond the small-corporation rule, § 1.6038A-4(b)(2)(iii) lists circumstances that "may indicate reasonable cause and good faith":

An honest misunderstanding of fact or law that is reasonable in light of the taxpayer's experience and knowledge. A first-time founder abroad who understood that a foreign-owned LLC with no US income files nothing may fit this description, if the facts support it.
Isolated computational or transcriptional errors, which "generally are not inconsistent with reasonable cause and good faith". This matters more for a filed but flawed Form 5472 than for a missing one.
Reasonable reliance on professional advice. Reliance on an accountant or attorney "does not necessarily demonstrate" reasonable cause, but it does count when "the reliance was reasonable" under all the circumstances.

The statute adds a timing rule. Under IRC § 6038A(d)(3), the time for furnishing the information, and the start of the 90-day period after an IRS notice, is treated as not earlier than the last day on which reasonable cause existed. In plain terms, reasonable cause covers the period in which it lasted. It does not cover the months after you learned about the filing and did nothing.

Can First-Time Abate or the new AEP remove the penalty instead?

Generally, no. The IRS administrative penalty relief page says First Time Abate (FTA) is transitioning to a new Automatic Exemption from Penalty (AEP), starting summer 2026. The page lists the penalties eligible for relief under FTA or AEP: failure-to-file, failure-to-pay and failure-to-deposit penalties under IRC 6651, 6698, 6699 and 6656. The section 6038A(d) penalty is not on that list.

The same page says the relief is not available for returns filed once or infrequently (event-based filing requirements) or for information reporting that depends on another filing. The Internal Revenue Manual, at IRM 20.1.9.5.5, states that FTA does not apply to event-based filing requirements such as Form 5472, apart from a narrow exception tied to relief on a related late Form 1120. For planning purposes, treat reasonable cause as the relief route that actually exists.

How do you use the small-corporation rule in a late Form 5472 package?

Build the statement around the three conditions, one documented fact at a time. This is the order we work in:

Confirm the route. The DIIRSP page describes filing through normal procedures for taxpayers who are not under a civil examination or criminal investigation and have not already been contacted by the IRS about the late returns. If the IRS has already written to you, reply to that letter instead. The late-filing route checker sorts this out in five questions.
Total gross receipts for every late year. Use bank and processor statements, and keep them. Each year must be at or below $20,000,000 for the rule to apply to that year.
Prepare every missing year completely. Each year needs its own pro forma Form 1120 with Form 5472 attached. The Form 5472 instructions state that filing a substantially incomplete Form 5472 constitutes a failure to file.
Attach a statement to each late return, organised by the three conditions. The DIIRSP page allows a statement "to each delinquent information return"; the facts can be the same across years. Say when and how the LLC was formed, when and how you learned about Form 5472, and exactly what the US footprint consists of. Use dates, not adjectives.
Sign the declaration. State that the statement is made under penalties of perjury, as § 1.6038A-4(b)(2)(i) requires.
Attach the evidence. Formation invoice, proof of the owner's foreign address, bank-account opening documents, and whatever shows when you found out about the filing.
File and keep proof. Fax the package to 855-887-7737 or mail it to the IRS PIN Unit in Ogden, as the Form 5472 instructions direct, and keep the transmission record.
Answer every IRS letter on time. The third condition keeps running after you file.

Four scenarios, worked through

1. The designer who never heard of Form 5472. Ana lives in Portugal and formed a Wyoming LLC in 2023 through a formation service that sold her a registered agent and an EIN. Her LLC received $70,000 from clients in 2025. She learns about Form 5472 in September 2026, has had no IRS contact, and files 2023, 2024 and 2025 together. All three conditions line up: no knowledge, a US footprint limited to an agent and a bank account, and voluntary filing. Each statement should say so, with the formation invoice attached. A penalty can still be assessed during processing, and her statements would then carry her reply.

2. The same owner after an IRS letter. Suppose Ana received an IRS letter about the missing returns before she filed. The DIIRSP normal-filing description no longer fits her, because it covers taxpayers who "have not already been contacted". The letter's instructions and deadline now govern. Prompt, complete compliance with that request is the third condition, tested in real time.

3. The owner who filed once and stopped. Raj's accountant filed his LLC's 2022 Form 5472. Nothing was filed for 2023 to 2025. "No knowledge" is hard to claim when an earlier return shows the requirement was known. The small-corporation rule is weak here, and any relief request needs other true facts, such as reasonable reliance on advice.

4. The seller above the threshold. An e-commerce LLC with $24,000,000 of receipts in 2025 is not a small corporation for that year. The liberal-application direction does not apply to 2025, although the general case-by-case standard in § 1.6038A-4(b) still does.

These are illustrations of how the regulation's words map onto facts. They are not predictions of IRS decisions.

How does Form5472 Prep handle late filings?

We prepare each missing year's pro forma Form 1120 and Form 5472, with the Part V statement, and fax the package to the IRS Ogden PIN Unit with a timestamped transmission receipt. For late years, the questionnaire asks why the filing was missed, and the package includes a reasonable cause statement built from your answers. Every filing is reviewed by a qualified accountant before it is submitted.

Standard: $149, ready in 5–7 business days
Express: $199, within 3 business days
Each additional past tax year: +$99
IRS fax delivery: included

We are not a CPA firm and do not give tax advice. If the IRS has already assessed a penalty or opened an examination, have a CPA, enrolled agent or tax attorney review your response. Compare options on the pricing page or start your filing.

Frequently asked questions

What is the small-corporation rule for Form 5472 penalties?

It is Treas. Reg. § 1.6038A-4(b)(2)(ii). It directs the IRS to apply reasonable cause liberally to a corporation with gross receipts of $20,000,000 or less that did not know the rules, has limited US presence and contact, and promptly and fully complies with IRS requests.

Does a foreign-owned LLC count as a small corporation?

It can. The Form 5472 instructions treat a foreign-owned single-member LLC as a reporting corporation. If its gross receipts for the year are $20,000,000 or less, it should meet the size test on the natural reading of the regulation. The three conditions still have to be shown with facts.

Does "liberally" mean the penalty will be removed?

No. Reasonable cause is still decided case by case, and the IRS DIIRSP page says penalties may be assessed without considering an attached reasonable cause statement. Liberal application improves how your facts are read. It guarantees no outcome.

Must the reasonable cause statement be signed under penalties of perjury?

Yes. Treas. Reg. § 1.6038A-4(b)(2)(i) requires an affirmative showing of all the facts in a written statement containing a declaration that it is made under penalties of perjury.

Can First-Time Abate remove a Form 5472 penalty?

Generally no. The IRS lists the penalties eligible for First Time Abate and the new Automatic Exemption from Penalty, and section 6038A(d) is not among them. Event-based filings such as Form 5472 are excluded, apart from a narrow exception in the Internal Revenue Manual.

What if the IRS has already contacted me about the missing years?

Then the DIIRSP normal-filing description no longer fits, because it covers taxpayers not already contacted. Follow the letter's instructions and deadline, file what it asks for, and keep replying promptly. The third small-corporation condition depends on it.

Is not knowing about Form 5472 enough on its own?

Not on its own. Lack of knowledge is one of three conditions in the small-corporation rule, and the regulation weighs all the facts case by case. Pair it with evidence of limited US presence and prompt, complete filing of every missing year.

The small-corporation rule is the regulation's clearest statement in favour of small foreign owners who missed Form 5472, but it only works alongside complete returns and a specific, signed statement. Start your catch-up filing to prepare every missing year with a reasonable cause statement, and read our reasonable cause letter guide for how to lay out the facts.

Educational content only; not tax or legal advice.