Quick Answer: The penalty for failing to file Form 5472 — or filing one that is substantially incomplete — is $25,000 per related party, per year, under IRC §6038A(d). If the failure continues more than 90 days after IRS notice, another $25,000 accrues for each 30-day period. Relief runs through a written reasonable cause statement made under penalties of perjury; first-time abatement generally does not apply. An unfiled 5472 also keeps the statute of limitations open.

How the $25,000 Penalty Actually Stacks

IRC §6038A(d) imposes $25,000 for each taxable year a reporting corporation fails to file a required Form 5472 or maintain required records. Three multipliers make real-world assessments much larger than $25,000:

Per related party. The regulations at Treas. Reg. §1.6038A-4 apply the penalty for each related party with reportable transactions — a company transacting with its foreign parent and two foreign affiliates faces three penalties per year
Per year. Each unfiled year is a separate failure — and these often surface three or four years deep
Continuation. If the failure continues more than 90 days after the IRS mails notice, an additional $25,000 accrues per related party for each 30-day period or fraction of one

The regulation’s own example walks a single entity to $225,000 across three years for one related party. A “substantially incomplete” filing — parts left blank, transactions omitted, estimates where records were required — counts as a failure to file, which is why a rushed 5472 can be as dangerous as none.

Who Gets Caught

Two populations: 25% foreign-owned US corporations, and — since 2017 — foreign-owned single-member LLCs, which are treated as corporations solely for this reporting even though they are otherwise disregarded and may owe no US income tax at all. The LLC files a pro forma Form 1120 with Form 5472 attached, on paper, by mail or fax — it cannot be e-filed. Foreign founders who formed a Delaware or Wyoming LLC and were told “no US tax, no US filings” are the single most common penalty recipients we see. Capital contributions, loans, and payments to the foreign owner are all reportable transactions; our who-must-file guide covers the definitions.

Reasonable cause is an evidence argument, not a persuasion exercise

What carries weight is a documented account of what happened, when it was discovered, what was done about it and what has changed so it will not recur. What does not carry weight is a general statement that the requirement was unknown. The difference is usually the books.

We prepare abatement requests supported by the underlying records. Call 631-349-1661 or send us the details and we will give you a straight answer.

Reasonable Cause: The Real Relief Path

Section 6038A penalties are assessable — no deficiency procedures, no Tax Court prepayment forum. Relief turns on reasonable cause under §1.6038A-4(b), which requires an affirmative written showing, made under penalties of perjury, that the failure resulted from reasonable cause and good faith. What the facts need to show:

Ordinary business care: how the taxpayer tried to comply — advisors engaged, questions asked, systems used
Why the failure happened anyway: an honest misunderstanding of fact or law, reasonable in light of the taxpayer’s experience and sophistication; reliance on a professional counts only where that reliance was itself reasonable
Prompt, complete correction once the obligation was discovered

One provision worth knowing: the regulations direct the IRS to apply reasonable cause liberally to small corporations — gross receipts of $20 million or less — with limited US presence and no knowledge of the requirement, that comply promptly once contacted. For exactly the foreign founder fact pattern above, that paragraph, argued properly, is often the difference between full abatement and a six-figure assessment.

Why First-Time Abatement Usually Won’t Save You

The IRS’s first-time abatement program does not generally extend to international information return penalties like the 5472. A narrow administrative exception can apply where the penalty was systemically assessed alongside a late Form 1120 that itself qualifies for FTA — but a standalone delinquent 5472, or one attached to a pro forma return, is outside it. Plan on reasonable cause, not FTA.

Filing Late: The Current Procedure

Under the IRS’s delinquent international information return submission procedures, a taxpayer not under examination files the missed forms through normal channels, attached to an amended (or original delinquent) return, with a reasonable cause statement. Since late 2020, the IRS may assess the penalty during processing without first reading the attached statement — meaning many filers receive a CP-series penalty notice and must then press the reasonable cause case in response. That sequence is normal; the case is won in the quality of the statement and the follow-through, not avoided by hoping the notice never comes.

One more reason not to wait: under IRC §6501(c)(8), the assessment limitations period stays open until three years after the missing information is furnished. An unfiled 5472 leaves the year open indefinitely.

A Realistic Scenario

A German founder forms a Delaware LLC in 2023, contributes $150,000, lends it $80,000 more in 2024, and files nothing — the formation service said a disregarded entity has no filings. The IRS identifies the entity in 2026. Exposure: $25,000 × 3 years = $75,000 before continuation penalties. The founder’s actual facts — small entity, no US presence, professional advice followed, immediate correction — fit the small-corporation liberal-application paragraph almost exactly. Filed proactively with a well-built reasonable cause statement, that profile has a strong abatement posture; discovered first by the IRS, materially weaker.

Common Mistakes

Assuming a disregarded LLC with no income has no filing obligation
Filing a thin 5472 with missing transaction detail — substantially incomplete equals unfiled
Attempting e-file; the pro forma 1120 + 5472 package is paper-only
Generic one-paragraph reasonable cause statements not made under penalties of perjury
Waiting — every year unfiled adds $25,000 per related party and keeps the statute open

FAQs

Can the penalty really apply if the LLC owes no tax?

Yes. It is an information reporting penalty, independent of any tax liability.

How many years back should I file?

Every year with reportable transactions since the obligation began. Which years to include and how to frame them is strategy work done before anything is mailed.

Does paying the penalty end it?

No — abatement can be pursued after assessment through reasonable cause requests and appeals. But the strongest position is built into the original late filing.

Will filing late trigger an audit?

Delinquent submissions are not automatically audited; they remain subject to normal selection. Complete, consistent filings lower the profile.

What records do I need?

The §6038A regulations carry their own recordkeeping duty: books sufficient to establish the accuracy of each related-party transaction — contribution documents, loan agreements, intercompany invoices, bank records.

Fix It Before the Notice

We prepare delinquent Form 5472 packages, pro forma 1120s, and reasonable cause statements for foreign-owned corporations and LLCs. Talk to us confidentially or start with tax preparation. Related reading: Form 5472: who must file and when a foreign owner actually owes US tax.

If you own a U.S. entity as a foreign person, the filing is downstream of the bookkeeping. See how we structure the books to support it on our foreign-owned U.S. business accounting page.

The strongest abatement argument is a return that is now correct. Before responding to a penalty notice, work through the line-by-line instructions for completing Form 5472 so the corrected filing you attach does not repeat the error that triggered the notice in the first place.

Talk to an accountant who works in your industry

Precision Accounting & Consulting works with contractors, law firms, medical practices and property owners across the country. If something on this page raised a question about your own books, send it over and we will give you a straight answer.