Form 5472: The $25,000 Filing Foreign-Owned LLCs Miss Most (2026 Guide)

Every year, foreign founders form US single-member LLCs, get the EIN, open the bank account — and never hear the words "Form 5472" until a $25,000 penalty notice explains them. It is the most commonly missed filing among foreign-owned LLCs, for an understandable reason: the LLC pays no US income tax, files no income tax return in the ordinary sense, and often has no revenue at all in year one. So founders reasonably assume there is nothing to file. That assumption is wrong, and it is the single most expensive misunderstanding in this corner of US compliance.

This guide explains who must file Form 5472, why "my LLC made no money" does not get you out of it, what a reportable transaction actually is, and the exact mechanics of filing — the pro forma 1120, the fax number, the Ogden address, and the deadline. Everything here follows the IRS Instructions for Form 5472 (Rev. December 2024), the current revision as of mid-2026.

What Form 5472 is and why the IRS cares

Form 5472 is an information return, not a tax return. It reports no tax and computes no liability. Its original job is transfer pricing: when a US corporation is 25% or more foreign-owned, the IRS wants a paper trail of the money moving between that corporation and its related parties abroad, so that profits cannot be quietly shifted out of US taxing reach through intercompany payments.

For decades this was a concern for multinationals, not solo founders. That changed effective 2017, when the requirement was extended to foreign-owned US disregarded entities — which is exactly what a single-member LLC owned by a non-US person is by default. Before 2017, a foreign owner could hold a US LLC that was essentially invisible to the IRS. The extension of Form 5472 closed that gap: your LLC may be disregarded for income tax, but it is very much regarded for this filing.

The practical translation: a Form 5472 obligation for a foreign-owned LLC is not a sign you did something wrong. It is routine annual disclosure. The problem is only that so few founders are told it exists.

Who must file: the 25% test and the disregarded-entity trap

The filing requirement attaches to what the IRS calls a "25% foreign-owned U.S. corporation (including a foreign-owned U.S. disregarded entity)" that had reportable transactions with a related party during the tax year. A corporation is 25% foreign-owned if at least one foreign person owns, directly or indirectly, 25% or more of it at any time during the year — even for a day.

Notice how easily a typical founder setup clears that bar:

• You are a non-US person (not a US citizen or resident), and
• You own 100% of a US single-member LLC that has not elected corporate taxation.

That LLC is a foreign-owned US disregarded entity — a "DE" in IRS shorthand — and solely for Form 5472 purposes it is treated as if it were a US corporation. This is the trap: founders are correctly told that a single-member LLC is "disregarded" and files no corporate income tax return, and they stop listening there. Disregarded status removes the income tax return. It does not remove Form 5472. In fact, for DEs the reporting rules are broader than for actual corporations, as you will see in the reportable-transactions section below.

The 25% test also means partial ownership does not save you. A US LLC owned 25% by a foreign person and 75% by Americans can still be inside the regime. But the clearest, most common case — and the audience for this guide — is the 100% foreign-owned single-member LLC.

"My LLC made no money — do I still file?"

Yes. A foreign-owned single-member LLC with zero income almost always still has to file Form 5472, because the trigger is not income — it is reportable transactions with a related party, and for a disregarded entity those explicitly include the money involved in forming and funding the company itself.

Walk through a typical first year. You formed the LLC in March. You wired money from your personal account to open the LLC's US bank account. Maybe you paid the state filing fee and the registered agent from your personal card. The LLC earned nothing, sold nothing, sat waiting for Amazon approval. Under the instructions for Form 5472, the formation payments and the funding wire are reportable transactions between the DE and its foreign owner — a related party by definition. The filing obligation exists.

"No income means no filing" is the myth that generates most of the penalty notices we see. The only foreign-owned DE with genuinely nothing to report is one with no transactions of any kind with its owner or other related parties all year — which, for a company that had to be formed and funded by someone, is rarer than it sounds. If the LLC existed during the year, the safe working assumption is that a Form 5472 is due.

What counts as a reportable transaction

For ordinary 25% foreign-owned corporations, reportable transactions are the familiar intercompany items — sales, rents, royalties, interest, service fees paid to or received from related parties. For foreign-owned disregarded entities, the instructions go further. A DE must also report amounts paid or received in connection with the formation, dissolution, acquisition, and disposition of the entity, plus contributions to and distributions from the entity.

In concrete terms, each of these is a reportable transaction for your LLC:

• You wire $500 to the LLC's new bank account to activate it. That is a contribution — reportable.
• You pay the state formation fee, registered agent, or the LLC's software bills from your personal card. Amounts paid in connection with formation, or on the entity's behalf — reportable.
• The LLC sends profit (or any money) back to your personal account. That is a distribution — reportable.
• You lend the LLC money, or it repays you. Related-party loans and repayments — reportable.
• You dissolve the LLC and take back what is left. Dissolution amounts — reportable.

The pattern to internalize: any money crossing the line between you and your LLC, in either direction, for any reason, is presumptively reportable. The dollar amounts are disclosed on the form, but there is no minimum that makes a transaction too small to matter. The $500 opening wire creates the same filing obligation as a $5 million one.

The $25,000 penalty — and how it compounds

The penalty structure is what turns a paperwork oversight into a serious problem. The initial penalty is $25,000, and it applies in three separate situations: failing to file Form 5472 when due, filing one that is substantially incomplete, and failing to keep the records the regulations require (more on that duty below). A sloppy or hollow filing can therefore cost the same as no filing at all.

Then it compounds. If the failure continues for more than 90 days after the IRS notifies you, an additional $25,000 accrues for each 30-day period — or any part of one — during which the failure persists. The instructions state no maximum.

Note what is not in that table: any reference to income, profit, or company size. The Form 5472 penalty of $25,000 lands identically on a dormant LLC that received one funding wire and on an eight-figure trading company. That disproportion is exactly why this filing deserves a permanent place on your compliance calendar rather than a mental note.

How to actually file: pro forma 1120 + Form 5472

A disregarded entity has no income tax return of its own to attach Form 5472 to, so the IRS created a carrier for it: a pro forma Form 1120. "Pro forma" means the 1120 is a cover page, not a real corporate return. You complete only:

• The LLC's name and address,
• Item B (the employer identification number) and Item E, and
• The words "Foreign-owned U.S. DE" written across the top of the form.

Attach the completed Form 5472 behind it. No income figures, no tax computation, no signature pages of a full corporate return — the pro forma 1120 exists purely so the 5472 has something to ride on.

One prerequisite hides in Item B: the LLC needs an EIN. If you have not obtained one yet, do that first — it takes weeks by fax for non-US founders, and the filing cannot go in without it. We cover the exact process in our guide to getting an EIN without an SSN.

Fax or mail — there is no e-file for DEs

A foreign-owned DE cannot e-file this package. No commercial software will transmit a pro forma 1120 with an attached 5472 for a disregarded entity. You have exactly two channels, both going to the IRS unit that handles these filings:

Between the two, fax is the channel we use for clients: it is instant, it produces a timestamped confirmation, and it does not depend on international mail. Whichever you choose, keep proof. If a penalty notice ever arrives in error, your fax confirmation or courier receipt is the evidence that ends the conversation quickly.

Deadlines and the Form 7004 extension

For a calendar-year disregarded entity — which is nearly every foreign-owned SMLLC — the package is due April 15 of the following year. Your 2025 Form 5472 was due April 15, 2026; the 2026 filing will be due April 15, 2027.

The deadline can be extended to October 15 by filing Form 7004 before the April due date. Our standing advice: file Form 7004 defensively every year, even when you fully intend to file in April. The extension costs nothing meaningful to prepare, and it converts a missed April deadline — a $25,000 event — into a non-event with six months of slack. Given the asymmetry, there is no good argument against it.

Do not confuse this with your personal US filing position. The DE's Form 5472 deadline runs on its own track; whether you personally owe a 1040-NR is a separate analysis with its own dates.

The recordkeeping duty most founders miss

Filing the form is only half the obligation. Under the regulations issued under section 6001, the entity must keep records sufficient to establish the correctness of the return — the permanent books and records that substantiate what the Form 5472 reports. And recall from the penalty section: failing to keep those records is itself a $25,000 penalty trigger, independent of whether the form was filed on time.

In practice, for a founder-owned SMLLC this means keeping, year by year: bank statements for the LLC's accounts, records of every transfer between you and the company (dates, amounts, purpose), formation invoices and state fees, any loan agreements between you and the LLC, and the workpapers behind the numbers you put on the form. None of this is exotic — a well-kept bookkeeping file covers it. The founders who get hurt are the ones running the LLC through a personal account with no ledger at all, who then cannot reconstruct what the "contributions" line should say.

First-year compliance checklist for a foreign-owned SMLLC

If you formed (or are forming) a US single-member LLC as a non-US person, this is the sequence that keeps you clean through the first filing season:

1. Form the LLC and keep the stamped state documents. (Still choosing a state? See our comparison of Delaware vs Wyoming vs Nevada.)
2. Get the EIN early — it is required for the pro forma 1120, and the non-SSN process takes weeks, not days.
3. Open a dedicated LLC bank account and run every company transaction through it. Never mix personal and company money without a record.
4. Log every owner–LLC transfer from day one: the opening wire, formation costs you covered personally, later top-ups, any distributions. This log becomes your Form 5472 numbers.
5. Calendar April 15 — and file Form 7004 before it as a matter of routine, extending to October 15.
6. Prepare the package: pro forma 1120 (name, address, items B and E, "Foreign-owned U.S. DE" across the top) with Form 5472 attached.
7. Fax it to 855-887-7737 at 300 DPI or better — or mail it to the Ogden address — and archive the confirmation with that year's records.

Frequently asked questions

Primary source: IRS Instructions for Form 5472 (Rev. December 2024) — filer definitions, disregarded-entity rules, reportable transactions, penalties, and filing addresses; recordkeeping duty per regulations under section 6001; BOI status per FinCEN interim final rule (March 2025). Details current as of July 8, 2026 — IRS fax numbers, addresses, and form revisions change; verify against irs.gov before filing. This article is general information, not tax advice for your specific situation.