IRS Form 5472: Who Files It When and What Happens If You Don't

IRS Form 5472 is an information return — a disclosure document, not a tax-payment form. It exists so the IRS can see money flowing between a US business and the foreign people or companies that control it. Congress created the requirement under Internal Revenue Code section 6038A, added by the Tax Reform Act of 1986, and extended it to foreign-owned single-member LLCs through final regulations effective for tax years beginning on or after January 1, 2017(Treasury Decision 9796).

Two statutes govern the form. Section 6038A covers 25%-foreign-owned US corporations, and section 6038C covers foreign corporations engaged in a US trade or business. A foreign-owned LLC treated as a disregarded entity is folded into the section 6038A rules and treated as a corporation for this reporting purpose only — it still pays no entity-level income tax.

Why the IRS requires it

The IRS uses IRS Form 5472 to detect transfer-pricing abuse and hidden income shifting. When a foreign owner moves money in and out of a US company, those transactions can disguise profit. The form forces disclosure of every such transaction, identified by category and dollar amount across its nine parts. It carries no tax calculation — it simply lists who the foreign owner is, what the US entity is, and what money changed hands.

Two conditions must both be true. First, a foreign person must own at least 25%of the US entity, measured by vote or value. A “25% foreign shareholder” can be an individual, a foreign corporation, a foreign partnership, a trust, or an estate. Second, the entity must have a reportable transaction with that foreign owner or another related foreign party during the year.

By far the most common filer is the foreign-owned single-member LLC. A non-resident forms a Wyoming, Delaware, or New Mexico LLC, owns 100% of it, and uses it for e-commerce, consulting, or SaaS. That LLC is a disregarded entity, and the single foreign owner — owning well above the 25% threshold — triggers the section 6038A rules.

This is the point most foreign founders miss. People assume IRS Form 5472 applies only to companies that earn money. It does not. The trigger is a transaction, not a profit. The moment you wire money from your personal account to fund your LLC, you have created a reportable transaction.

Because forming and funding an LLC always involves moving money from the owner, virtually every foreign-owned single-member LLC has at least one reportable transactionin its first year. That is why the practical answer to “do I have to file?” is almost always yes — even funding the LLC counts.

A single-member LLC is normally a disregarded entity: the IRS ignores it and looks through to the owner. For most tax purposes that is still true. But final regulations under T.D. 9796 carved out an exception: a foreign-owned disregarded entity is treated as a separate corporation solely for the reporting and record-keeping rules of section 6038A. This rule has applied since the 2017 tax year.

What the LLC must actually do

The LLC files a pro forma Form 1120. “Pro forma” means a shell return: you complete only the top identifying section — legal name, US address, EIN, and the date and state of formation — and write “Foreign-owned U.S. DE” across the top. You leave the income and tax sections blank, because a disregarded entity pays no entity-level income tax. IRS Form 5472 is attached to that pro forma 1120, and the two are mailed or faxed together as a single package.

The LLC also needs an EIN (Employer Identification Number) before it can file. A non-resident without a Social Security Number applies for the EIN with Form SS-4, by fax or mail.

The extension only moves the filing deadline. For a disregarded entity there is no tax to pay, so there is nothing else to extend. File Form 7004 by April 15 to claim the six-month extension to October 15. A fiscal-year entity is due on the 15th day of the fourth month after its year-end.

This is a critical and widely misunderstood point: there is no e-file path for a foreign-owned disregarded entity filing a pro forma 1120. Software that e-files normal corporate returns will not transmit this package. The only two accepted methods are mail and fax.

Because timely filing is the only defense against the $25,000 penalty, keep dated proof of submission. A faxed confirmation sheet or a certified-mail green card establishes the filing date if the IRS later questions it. A specialist files this package the same way every day — mail or fax, never e-file.

For a typical foreign-owned SMLLC, only Parts I, II, III, V, and VI are completed. Parts VIII and IX apply to large multinationals with base erosion payments and almost never to a small founder-owned LLC. If the LLC had more than one related foreign party, it files a separate Form 5472 for each, all attached to the same single pro forma 1120.

IRS Form 5472 carries one of the harshest information-return penalties in the US tax code. The base penalty is $25,000 for each form not filed, filed late, or filed substantially incomplete. Because there is no statute of limitations on an unfiled information return, a year you missed five years ago can still be assessed today.

The penalty also compounds. If the IRS sends a notice of failure and the form is still not filed within 90 days, an additional $25,000 applies for each 30-day period that the failure continues. A founder who ignored the form for three years could face $75,000 or more before any continuation penalty even begins.

Penalty abatement is sometimes available where the taxpayer can show reasonable cause for the late filing, but it is discretionary and never guaranteed. The reliable defense is to file on time, or to catch up quickly with proof of submission. The /penalty-calculator/ shows your exposure by number of unfiled years.

IRS Form 5472 and its instructions are two separate documents, both downloadable free from the IRS website. Search “Form 5472” on irs.gov, or go to the “Forms & Instructions” section. Use the December 2025 revision for a 2025 tax year return filed in 2026 — using an outdated revision is one reason the IRS rejects a package as incomplete.

Downloading the PDF is free; completing and filing it correctly is where the $25,000 risk lives. The form must be typed or printed clearly, attached to the pro forma 1120, and mailed or faxed — never submitted online.

The two forms are constantly confused because both involve cross-border ownership, but they are mirror images of each other. The simplest way to remember: 5472 = foreign money into a US company; 5471 = US person into a foreign company.

Almost every foreign founder of a US LLC files Form 5472. You would only file Form 5471 if you, as a US taxpayer, owned a corporation in another country — a different situation entirely.

DIY is free but unforgiving: the $25,000 penalty applies even to an honest mistake or a missed deadline. For a flat $299, form5472.tax prepares IRS Form 5472 and the pro forma Form 1120, has a specialist review it, and files it the correct way — saving $248 versus form5472.online and up to $1,700 versus doola.

Because a foreign-owned disregarded entity cannot e-file, the physical destination of the package matters. The IRS routes all foreign-owned U.S. DE filings to a single dedicated unit in Austin, Texas. Do not send the package to the address printed in the general Form 1120 instructions for domestic corporations — that goes to a different service center and can cause the return to be misrouted or treated as never filed. Use the Austin address or the dedicated fax line below.

Mail or fax — which is safer

Both methods are equally valid. Fax is faster and gives you an instant dated confirmation page; mail via certified mail with return receipt gives you a postmark that fixes the filing date. Whichever you choose, the dated proof is your only defense if the IRS later claims the $25,000 penalty for a missing or late form, so keep it indefinitely — there is no statute of limitations on this return, which means the IRS can question any past year at any time.

If you are filing more than one Form 5472 — one for each related foreign party — staple them all behind the single pro forma Form 1120 and send the complete package as one mailing or one fax. Never split the forms across separate envelopes.

Many foreign founders assume a small, low-revenue LLC stays invisible. It does not. The moment you applied for an EIN on Form SS-4, you told the IRS that a foreign-owned US entity exists, who its responsible party is, and what it does. That EIN sits in IRS systems permanently, and an EIN with no corresponding Form 5472 or pro forma 1120 on file is exactly the pattern the IRS uses to build non-filer lists.

Why no statute of limitations changes everything

For most tax returns, the IRS has only three years to assess after you file. An unfiledinformation return like Form 5472 never starts that clock. Under section 6038A, the assessment window stays open indefinitely, so a year you skipped five or ten years ago can still be assessed today at the full $25,000 per form. The exposure does not fade with time — it accumulates, because each missed year is a separate $25,000 penalty with no cap.

The practical takeaway: if you have an active EIN and have not filed, the safest move is to catch up and file with dated proof of submission, rather than hope the entity stays unnoticed.

The single most common confusion among foreign founders is believing Form 5472 is a tax bill. It is not. An information return exists purely to disclose — it tells the IRS who owns the entity and what money moved between the entity and its foreign owner. A tax-payment return, by contrast, computes taxable income and the tax owed on it. Form 5472 contains no income calculation and no tax line at all.

Why a disregarded LLC still files but owes nothing

A single-member LLC owned by a non-resident is a disregarded entity: its income is not taxed at the entity level. If that owner has no US-source income effectively connected to a US trade or business, there may be no US income tax at all. Yet the LLC still must file Form 5472 because the trigger is a reportable transaction, not income. This is why virtually every foreign-owned single-member LLC must file even with zero revenue — funding the LLC alone creates a reportable transaction.

So the package is genuinely a reportingobligation wearing the shell of a tax return: a pro forma Form 1120 with the income and tax sections left blank, marked “Foreign-owned U.S. DE,” with Form 5472 attached. You disclose; you do not pay entity tax. The $25,000 penalty exists to enforce the disclosure, not to collect tax.