Introduction
A missed or incomplete Form 5472 can cost a foreign-owned US business US$25,000 per required form, per tax year, under IRC Section 6038A. Continuation charges can stack on top.
This guide is for Australian business owners and international companies running US entities. Form 5472 is an information return, not a tax-payment form. It tells the IRS who your related parties are and what moved between you.
We cover who must file, how penalties accumulate, how to prepare the 2026 filing package, and which relief routes exist if a filing was missed. Rules change, so verify deadlines and procedures against current IRS instructions before you submit anything.
Key Takeaways
- The penalty applies to missing, late, or substantially incomplete forms, so filing on time is not enough.
- Exposure multiplies by form, related party, and tax year.
- Continuation penalties of US$25,000 per 30-day period have no stated cap.
- First-Time Abatement is conditional, and reasonable cause needs documented facts.
- Never ignore an IRS penalty notice.
Who Must File Form 5472 and What Triggers the Obligation
Filer categories
Three groups must file Form 5472:
- A US domestic corporation that is at least 25% foreign-owned
- A foreign corporation engaged in a US trade or business (covered separately by IRC Section 6038C)
- A foreign-owned US disregarded entity, such as a single-member LLC owned by an Australian resident or company
A 25% foreign owner means at least one foreign person owns, directly or indirectly, 25% of voting power or stock value at any time in the year. Attribution rules under IRC 318 apply with modifications, including a 10% threshold in place of 50% in one provision. Ownership held through an Australian holding company or trust needs careful tracing.
Reportable transactions
Reportable transactions with a related party include:
- Capital contributions and distributions
- Loans and advances
- Services, rents, and royalties
- Purchases and sales
- Noncash transfers or transactions for less than full consideration
Owner-paid expenses and reimbursements usually fall within the definition of loans, contributions, or services performed on another's behalf. The instructions do not label them specifically, so work with a preparer to classify them.
No income does not mean no filing
The exemption is for no reportable transactions, not no income. An Australian founder who wires US$2,000 to fund a new LLC has a reportable contribution, even if the LLC earns nothing.
Form 5472 versus Form 5471
Form 5471 covers certain foreign corporations owned by US persons. Form 5472 covers related-party transactions of a reporting corporation. Foreign ownership alone does not tell you which form applies, and the limited 5471 exception does not help foreign-owned disregarded entities.
How the Form 5472 $25,000 Penalty Is Calculated
The base penalty
Under IRC Section 6038A, the corporation pays US$25,000 for each taxable year in which it fails to:
- File the required information
- Maintain required records
- File a substantially complete form (treated as a failure to file)
The regulations count one initial penalty per tax year and related party, not one per missing field.
Illustration
The regulations give an official example. A corporation with failures involving three related parties faces US$75,000 in Year 1. If the same happens in Years 2 and 3, the total is US$225,000. Treat this as a hypothetical, not an assessment statistic.
Continuation penalties
If the failure continues more than 90 days after the IRS mails notice, an additional US$25,000 applies for each 30-day period or fraction. No maximum cap applies to continuation charges.
The 90-day period is not your response deadline. The notice itself states the due date to follow, so read it immediately.
Less obvious triggers
- Missing related-party details
- Omitted noncash transactions
- Filing one form where separate forms are needed (one per related party)
- Failing to keep supporting books and records
Exposure checklist
Count each of these before you speak to an adviser:
- Tax years involved
- Related parties with reportable transactions
- Forms required per year
- IRS notices received and their dates
- Forms filed substantially incomplete
A note on the courts
In Farhy (DC Circuit, May 2024) and Safdieh (Second Circuit, February 2026), appeals courts upheld assessment of penalties under Section 6038(b). Those cases involve a different provision. They do not cancel Form 5472 penalties, so do not rely on them as a defence.
2026 Form 5472 Filing Instructions, Deadlines, and Records
Filing package by entity type
- Domestic corporation: attach Form 5472 to the full Form 1120.
- Foreign-owned disregarded entity: attach Form 5472 to a pro forma Form 1120. Complete the entity name, address, and items B and E, then write "Foreign-owned U.S. DE" across the top.
Preparation steps
- Confirm entity classification and ownership.
- Verify the EIN.
- Identify every related party, foreign or US.
- Reconcile all transactions for the year.
- Complete a separate Form 5472 for each related party with a reportable transaction.
- Review the package before submission.
Have these details ready before you complete the forms:
- Legal names, addresses, and countries
- Identifying numbers, or reference IDs for foreign parties without a US number
- Ownership details
- Transaction dates and amounts in US dollars
- Schedule of exchange rates used
Australian owners should keep AUD bank records alongside the conversion support.
Deadlines
Form 1120 is generally due the 15th day of the fourth month after year-end. For calendar-year entities, the IRS chart lists 15 April 2026 for the 2025 tax year. A 2026 tax year return falls due in 2027.
Fiscal-year entities have different dates; June 30 year-ends use the third month. Weekend and holiday dates move to the next business day.
Extensions
File Form 7004 by the original due date. It generally gives six months. For a disregarded entity, mark "Foreign-owned U.S. DE" and send it through the dedicated route, not the standard 7004 address. The extension covers the attached Form 5472.
Filing method
Foreign-owned disregarded entities cannot e-file Form 5472. Fax the package at 300 DPI or higher to 855-887-7737, or mail it to Internal Revenue Service, 1973 Rulon White Blvd, M/S 6112, Attn: PIN Unit, Ogden, UT 84201. Keep proof of transmission or mailing. Confirm current details in the latest instructions first.
Records
Retain supporting documents for at least the applicable assessment and collection limitation periods:
- Contracts and invoices
- Bank statements and loan documents
- Ownership records and receipts
- Exchange-rate support
- Evidence for noncash transactions
Small-corporation and de minimis concessions relax certain record rules but never waive the filing itself. Those concessions do not apply to foreign-owned disregarded entities.
Penalty Relief Options and How to Prepare an Abatement Request
Reasonable cause
This is the main route. The IRS asks whether you used ordinary business care and prudence. Your written statement must set out the facts and include a declaration under penalties of perjury.
Points to cover:
- The specific reason for the failure
- Your efforts to comply
- Prompt correction once discovered
- Absence of willful neglect
For small corporations (US gross receipts of US$20M or less), the regulations call for liberal application where there was no knowledge of the rule, limited US contact, and prompt, full compliance.
Delinquent international submission procedures
You may use the IRS delinquent procedures only if you are not under civil examination or criminal investigation, and the IRS has not already contacted you about the returns.
A reasonable-cause statement may accompany each return. Eligibility offers no automatic protection, and the IRS may still assess penalties.
First-Time Abatement
The IRM says FTA does not generally apply to Form 5472's event-based requirement. A narrow exception exists: where the penalty was systemically assessed because Form 5472 accompanied a late Form 1120, it may follow that return's FTA abatement.
This requires no similar penalties and no late related 1120 returns in the prior three periods. Do not assume FTA is available.
Form 843
Form 843 requests abatement or refund after assessment. Follow any notice instructions first, since the form may not be needed. Explain the reasons, amount, and computation, and attach evidence.
Abatement letter checklist
- Name, EIN, and tax year
- Notice number and penalty type
- Timeline of events
- Reason for noncompliance
- Compliance history
- Corrective action taken
- Supporting documents
- Signed declaration
State the exact relief you want. If you request first-time relief, explain how you meet the criteria and add reasonable cause as an alternative. Avoid exaggeration.
What does not count by itself
These factors rarely establish reasonable cause on their own:
- Ignorance of the rule
- Reliance on someone to file
- Administrative error
- Lack of income
Reliance on substantive professional advice may qualify, but delegating timely filing generally does not (United States v. Boyle). Link your facts to your actual efforts.
What to Do After a Missed Filing or IRS Penalty Notice
Discovered a gap yourself
- Identify every affected year and related party.
- Reconstruct transactions from bank and loan records.
- Prepare complete delinquent forms.
- Decide whether to include a reasonable-cause statement.
Received an IRS notice
- Confirm the tax year and form at issue
- Note the response date printed on the notice
- Keep the notice and envelope
- Do not send an incomplete response
- Get specialist advice before making factual admissions
Appeals and Taxpayer Advocate routes remain open after a notice. Lien or levy notices carry separate hearing rights with 30-day timing rules.
Three separate steps
Treat these as separate actions:
- Correcting the return
- Requesting relief
- Paying or disputing an assessment
Filing a late Form 5472 does not automatically cancel a penalty.
Prevention checklist
- Keep an annual related-party transaction register
- Review ownership changes
- Reconcile owner payments and distributions
- Calendar original and extended deadlines
- Retain filing evidence
Where VJM Global fits
VJM Global supports Australian businesses with US entities on tax compliance and accounting. That help matters most when transactions need reconstructing, cross-border records are scattered, or recurring filings need coordination. The firm has a New York office and has served 250+ Australian businesses.
Conclusion: Reduce Form 5472 Risk Before the Deadline
The action sequence is straightforward:
- Establish whether the entity must file
- List every related-party transaction
- Submit the correct package by the verified deadline
- Preserve records
- Answer any IRS notice quickly
US$25,000 is only the starting point. The number of forms, years, related parties, completeness, and notice timeline can change the outcome sharply.
Form 5472 penalty cases are fact-specific. Confirm current 2026 IRS rules with a qualified US tax professional before filing or requesting abatement.
Frequently Asked Questions
What is the penalty for late filing Form 5472?
The base penalty is US$25,000 per form, per tax year. If the failure continues beyond 90 days after IRS notice, US$25,000 more applies per 30-day period. Verify the current statute.
How do I write a first-time penalty abatement letter to the IRS?
Identify the penalty and tax year, explain your compliance history and facts, request specific relief, and describe corrective action. Attach evidence. Confirm FTA applies to your Form 5472 penalty, and add reasonable cause as a fallback.
Who has to file Form 5472?
Domestic corporations at least 25% foreign-owned, foreign corporations engaged in a US trade or business, and foreign-owned disregarded entities. Reportable related-party transactions trigger the filing. Confirm current ownership rules.
Does a foreign-owned LLC with no income need to file Form 5472?
Yes, if it had reportable transactions such as owner funding, formation expenses, reimbursements, or distributions. No income alone does not remove the requirement.
Can Form 5472 be filed electronically?
Ordinary reporting corporations follow their Form 1120 filing method. Foreign-owned disregarded entities cannot e-file and must fax or mail the pro forma package. Check current instructions.
What should I do if I receive a Form 5472 penalty notice?
Read the notice, calendar the response date, gather forms and records, and correct the underlying filing. Then evaluate reasonable cause, First-Time Abatement, or Form 843 with qualified help.
