Why this form is so commonly missed
Form 5472 is the most expensive surprise in the US tax system for foreign founders. The rules expanded in 2017 to cover foreign-owned single-member LLCs — the most common entity used by non-US founders to operate in the United States. The IRS doesn't send a polite reminder. There's no withholding system that flags the obligation. Most LLC formation services don't mention it. By the time founders discover Form 5472 exists, they're usually two or three filing years behind, and the penalties have stacked up.
The specific group most affected is the easiest to identify: a non-US individual who formed a Wyoming, Delaware, New Mexico, or Florida LLC to run an Amazon store, a Stripe-payments service business, or a US bank account, and who treats the LLC as their business "shell" without engaging US tax help. If that's you, keep reading.
Does Form 5472 apply to you?
Who must file Form 5472
Three categories trigger the filing requirement. The middle one is the trap.
The single-member LLC row is where 90% of foreign founders get caught. The IRS treats your LLC as "disregarded" for income tax purposes, meaning the LLC itself doesn't pay US income tax. But for information reporting, the LLC very much exists — and Form 5472 is required regardless of whether the LLC made money.
The 25% ownership threshold counts both direct ownership and indirect ownership through entities, plus attribution rules for family members. A foreign-owned LLC doesn't escape just because the foreign owner technically owns 24% — if their spouse or children own the rest, attribution rules generally apply.
What counts as a "reportable transaction"
This is where most founders trip up. Reportable transactions aren't just sales or wire transfers. They include almost any movement of money or value between the LLC and its foreign owner — or any party related to the owner.
Common reportable transactions include:
- Capital contributions — money you put in to fund the LLC. Yes, even your own initial deposit when you formed the entity.
- Distributions — money you take out of the LLC, including to pay yourself.
- Loans — between you and the LLC, in either direction. Even interest-free intercompany loans count.
- Sales of services or property — anything the LLC bought from you, or vice versa.
- Payment of LLC expenses by the owner personally — common when founders use a personal card for early business expenses.
- Use of property — if the foreign owner uses the LLC's assets, or the LLC uses the owner's, that's reportable.
The most dangerous misconception: thinking that "no business activity" equals "no reportable transactions." If you formed the LLC and contributed any capital — even $100 — that's a reportable transaction. The formation itself triggers a Form 5472 obligation for that tax year.
The filing package: pro forma 1120 + Form 5472
For foreign-owned single-member LLCs, the filing package has two parts:
- Pro forma Form 1120 — a "cover sheet" version of the corporate income tax return. Only requires basic entity info (name, address, EIN). Items B and E on the first page. Write "Foreign-owned US DE" across the top.
- Form 5472 itself — one form per foreign related party. If the LLC had reportable transactions with two different related parties (you and a spouse, for example), that's two separate Form 5472 filings.
The package must be paper-filed or faxed to the IRS Ogden, UT processing center. Foreign-owned disregarded entities cannot e-file Form 5472. This is a procedural rule that catches founders who try to file through TurboTax or similar consumer software.
Fax: 855-887-7737
The deadline is the same as a corporate income tax return: April 15 for calendar-year entities. A Form 7004 extension gets you six more months (to October 15), but the extension request itself must be filed by April 15.
Worked example — Berik's Wyoming LLC
Berik is a Kazakhstan-based founder. He formed a Wyoming LLC in March 2025 to run an Amazon FBA business. He contributed $5,000 in capital to open a US bank account and signed up for an Amazon seller account. He didn't actually launch the store in 2025 — life got busy. His LLC made $0 in 2025.
What does Berik owe for the 2025 tax year?
- Federal income tax: $0. The LLC is disregarded, Berik is a non-resident, no US-source income was generated.
- Form 5472: Required. The $5,000 capital contribution is a reportable transaction.
- Pro forma Form 1120: Required as the cover for Form 5472.
- Wyoming annual report: Required ($60).
- Filing deadline: April 15, 2026.
If Berik misses the April 15, 2026 deadline and the IRS notices: the base penalty is $25,000. If Berik doesn't respond within 90 days of the IRS notice, an additional $25,000 is added for each 30-day period that follows — with no maximum cap.
If Berik discovered the requirement in early 2027 — having already missed the 2025 filing — he should file the delinquent return immediately, with a reasonable cause statement, before the IRS sends a notice. Filing voluntarily before IRS contact is the path most likely to result in penalty abatement.
The penalty structure
Continuation: Additional $25,000 for each 30-day period after 90 days of IRS notice
Maximum cap: None. There is no statutory limit on continuation penalties
Per related party: Each related party requires its own Form 5472. Three parties = three potential $25,000 penalties
In practical terms, this means a founder with three years of unfiled Forms 5472 could face $75,000 in base penalties before the IRS even sends a notice. After the notice, exposure can grow into six figures.
The penalty is also assessed for "substantially incomplete" filings. Filing a Form 5472 with missing related-party detail, missing transaction amounts, or wrong entity classification can trigger the same $25,000 penalty as not filing at all.
There's also a practical statute-of-limitations problem. Under IRC §6501(c)(8), failure to file Form 5472 keeps the assessment period open on the related tax return — the IRS can come after you years later for both the information return penalty and any related underlying tax issue. In practice, foreign-owned LLC owners who never filed have indefinite IRS exposure until they catch up.
If you're already behind
If you've discovered that Form 5472 applied to past years, the worst thing you can do is wait. The IRS has several relief paths, and they all favor early action.
Delinquent International Information Return Submission Procedures (DIIRSP). The IRS allows late filings of Form 5472 with a reasonable cause statement, provided you're not currently under examination and haven't been contacted by the IRS about the missing returns. File the delinquent forms with a written statement explaining the failure (didn't know about the requirement, relied on a service that didn't mention it, etc.). Under the current IRS procedures, penalties may be assessed without considering the attached statement, and you may need to respond to IRS correspondence and resubmit the reasonable cause information.
Reasonable cause abatement. Even outside DIIRSP, you can request penalty abatement based on reasonable cause. Strong fact patterns include: written reliance on incorrect professional advice, serious illness, natural disaster, or prompt voluntary correction after discovering the rule. The IRS makes determinations case-by-case; the statement should be detailed and dated.
First-time abatement (FTA). Generally doesn't apply to Form 5472 (which is event-based), but the IRM allows FTA for systematically assessed Form 5472 penalties when the related Form 1120 was eligible for FTA, the taxpayer had no similar penalties in the prior 3 periods, and the related return wasn't late in the prior 3 periods.
Form 843. If a penalty has already been assessed, you can request abatement after-the-fact using Form 843. This is a written claim for refund or abatement.
The pattern in all these paths is the same: voluntary correction before IRS contact dramatically improves your odds. After an IRS notice arrives, the relief paths narrow and the continuation penalties begin accruing.
Common mistakes
The five most common Form 5472 mistakes account for a large share of penalty notices:
- Not filing because the LLC had no income. Information returns aren't tied to tax liability. The formation itself is a reportable transaction.
- Filing one combined Form 5472 for multiple related parties. Each related party requires its own Form 5472. Combining them is treated as not filing for the others.
- Missing nonmonetary transactions. Use of property, interest-free loans, services rendered, and similar non-cash transactions are all reportable.
- Trying to e-file. Foreign-owned disregarded entities must mail or fax to Ogden, UT — not the regular Form 1120 address, and not electronically.
- Ignoring attribution rules. Spouses, children, and controlled entities count toward the 25% ownership threshold. A 24% direct owner whose spouse holds the other 76% still triggers the requirement.
Frequently asked questions
Usually, yes. Form 5472 is an information return, not a tax return. The LLC's formation alone (any capital contribution) creates a reportable transaction. The filing requirement applies regardless of revenue or profit; only a year with no reportable transactions at all (no contributions, distributions, loans, or owner-paid expenses) requires no Form 5472.
$25,000 per form, per year, under IRC §6038A(d)(1). Plus an additional $25,000 for each 30-day period that the failure continues beyond 90 days after IRS notice. There's no statutory maximum cap.
Foreign-owned single-member LLCs cannot e-file. The Form 5472 + pro forma Form 1120 package must be paper-filed or faxed to the IRS Ogden, UT processing center. This is different from regular corporate Form 1120 filings, which can be e-filed.
A simplified Form 1120 that serves as a cover sheet for Form 5472. Only requires basic entity information (name, address, EIN). You write "Foreign-owned US DE" across the top. It does not create corporate income tax liability.
One Form 5472 per related party. If you had reportable transactions with yourself, your spouse, and a foreign company you also own, you'd need three separate Forms 5472.
Generally yes. Failure to file Form 5472 keeps the assessment statute of limitations open under IRC §6501(c)(8). Practical effect: the IRS can come after years of unfiled Form 5472 indefinitely. Voluntary correction before IRS contact is strongly preferred.
No, not as a disregarded entity. Multi-member LLCs file Form 1065 (partnership return). Foreign partners are reported through Schedule K-1 and Forms 8804/8805 (withholding). However, if a multi-member LLC elected C-Corp tax treatment and has 25%+ foreign ownership, Form 5472 applies through the regular Form 1120 corporate return.
This article provides general information about US tax topics and is not a substitute for personalized advice from a qualified tax professional. Tax law changes frequently — verify current rules with a tax professional before filing or making decisions based on this content.
