Form 5472 in Plain English
If a foreign person owns a US company, Form 5472 may be required when there are reportable transactions. For many foreign-owned disregarded entities the common procedure is a pro-forma Form 1120 with Form 5472. Here is what it is and why missing a required filing is so costly.
What it is
Form 5472 is an IRS information return — a form that reports facts rather than calculating a tax bill. It reports certain dealings between a US company and its foreign owner or other related foreign parties: money you put in, money you took out, loans, and similar transactions. It exists so the US government can see how money flows between a US business and the people abroad who control it. Those related foreign parties can include a foreign parent company or another business owned by the same foreign owner, not just you as an individual.
If you are a non-US person who owns a US company — most commonly a single-member LLC treated as a disregarded entity — the common procedure, when Form 5472 applies, is to file it with a mostly blank "pro-forma" Form 1120 that acts as a cover page. Applicability depends on the entity, the owner's status, and reportable transactions. Forming the LLC or moving money in or out can be a reportable event, which is why a quiet year is not automatically a non-filing year — but it is not true that every foreign-owned LLC always files regardless of the facts. See the IRS Form 5472 instructions.
Why you should care
Form 5472 is easy to overlook precisely because it applies even when nothing is happening. Many founders assume a company with zero income owes nothing and skip filing — but this requirement is about the ownership relationship, not about profit. It is also separate from any income tax you may or may not owe. Whether you actually owe US income tax is a different question, decided by rules about US business activity and any tax treaty between the US and your country.
The mechanics add to the risk. As of 2026 there is no way to file Form 5472 electronically — it goes to the IRS by mail or fax only — which makes it easy to forget, misplace, or fill in wrong. You also cannot file it without an EIN for the company, so the two go hand in hand.
What happens if you ignore it
This is the part that catches people. The initial penalty for filing late, filing incorrectly, or not filing a required Form 5472 is generally $25,000 per form (as of 2026). If the IRS sends notice and the form still is not filed after the statutory notice period, continuation penalties of another $25,000 may apply for each additional 30 days. Failure to furnish certain international information can extend the assessment period for related tax under Internal Revenue Code section 6501(c)(8). Do not treat that as an unlimited penalty window. Fact-specific advice is required. See the IRS international information reporting penalties page.
Founders who ignored a required filing for a few dormant years can face tens of thousands of dollars in penalties on a company that never earned a cent. If that has already happened to you, reasonable-cause relief may reduce or remove penalties — it is facts-and-circumstances based and never guaranteed. Ignorance or non-disclosure alone is not sufficient. It is far better, and far cheaper, not to miss a required form in the first place. This page is general information, not a guarantee of result or engagement-specific advice.
What we handle for you
We prepare and file Form 5472 and the pro-forma 1120 properly, on time, every year — and if you have missed prior years, we handle the catch-up filings and the penalty-abatement request. It is a core part of our e-commerce and international tax work. If you own a US company as a foreign owner, talk to us before the deadline, not after.