Form 5472 Filing Guide for Foreign-Owned US LLCs

If you own a US LLC as a foreign person or entity, the IRS requires you to file Form 5472 every year — even if the LLC had no income. Missing this filing carries one of the steepest automatic penalties in the tax code: $25,000 per form, per year.

What Is Form 5472?

Form 5472, officially titled Information Return of a 25% Foreign-Owned U.S. Corporation or a Foreign Corporation Engaged in a U.S. Trade or Business, is an information return that reports transactions between a reporting corporation and its foreign owners or related parties. For foreign-owned single-member LLCs (disregarded entities), the form is filed alongside a pro-forma Form 1120 — a corporate tax return that reports no income but serves as the required “cover sheet” for the 5472.

The requirement stems from Treasury Regulation §1.6038A-2 and was significantly expanded by the Tax Cuts and Jobs Act of 2017, which brought foreign-owned disregarded entities into the reporting net effective for tax years beginning after December 31, 2016.

Who Must File Form 5472?

You are required to file Form 5472 if all of the following apply:

• You are a non-US person (non-resident alien, foreign corporation, foreign partnership, foreign trust, or foreign estate)
• You own 100% of a US single-member LLC (disregarded entity for tax purposes), or you own 25% or more of a US corporation
• The entity had at least one reportable transaction during the tax year — and for disregarded entities, virtually any financial activity counts, including capital contributions, expenses paid from personal funds, and distributions

In practice, nearly every foreign-owned single-member LLC must file, because the act of contributing capital to form the LLC is itself a reportable transaction.

Filing Deadline

Form 5472 is due on April 15 following the close of the tax year (calendar year filers). If you use a fiscal year, the form is due on the 15th day of the 4th month after your fiscal year ends.

Extensions are available. Filing Form 7004 grants an automatic 6-month extension, pushing the deadline to October 15 for calendar year filers. However, this only extends the filing deadline — it does not extend the time to pay any associated taxes owed on Form 1120.

Penalties for Non-Filing

The penalty for failure to file Form 5472, or for filing a substantially incomplete form, is $25,000 per form. If you fail to file after receiving an IRS notice, an additional $25,000 penalty applies for each 30-day period (or fraction thereof) during which the failure continues, with no upper limit.

This means a single year of non-compliance can quickly escalate to $50,000, $75,000, or more. Multiple LLCs multiply the exposure. The IRS has actively enforced these penalties since 2018.

Step-by-Step Filing Process

1. Obtain an EIN — Your LLC must have an Employer Identification Number. Apply using Form SS-4 online, by fax, or by mail.
2. Gather transaction records — Document all reportable transactions for the tax year: capital contributions, loans, distributions, rent payments, service fees, and any other amounts exchanged between the LLC and its foreign owner or related parties.
3. Complete Form 5472 — Fill out all applicable parts: Part I (reporting corporation information), Part II (25% foreign shareholder information), Part IV (monetary transactions), and Part VI (additional information for disregarded entities).
4. Prepare pro-forma Form 1120— Complete the header with the LLC's information, enter zeros on the income lines, and check the box indicating the return includes Form 5472.
5. File by mail — As of the current IRS guidance, Form 5472 attached to a pro-forma 1120 must be paper-filed by mail to the IRS campus specified in the form instructions. E-filing is not available for pro-forma 1120s filed solely to attach Form 5472.
6. Retain records — Keep all supporting documentation for at least 7 years. The IRS can assess penalties at any time for failure to file, as there is no statute of limitations for unfiled information returns.

IRS Resources

For the official form and instructions, visit the IRS website: IRS Form 5472 — About Form 5472. The instructions contain detailed guidance on determining reportable transactions and completing each part of the form.

Common Mistakes to Avoid

• Assuming no filing is needed because the LLC had no income. Income is irrelevant — the filing requirement is triggered by reportable transactions, not income.
• Forgetting capital contributions. The initial funding of the LLC is a reportable transaction.
• Filing electronically. Pro-forma 1120s with Form 5472 must currently be paper-filed.
• Omitting the pro-forma 1120. Form 5472 cannot be filed standalone — it must be attached to a Form 1120.
• Missing the deadline without an extension. File Form 7004 before April 15 if you need more time.