If you own a US company and someone outside the country owns a piece of it, there is a good chance the IRS wants a form from you that you have never heard of. It is Form 5472, and the penalty for skipping it starts at $25,000.
That number is not a typo. It is the single most expensive form most foreign owners do not know exists.
The good news is that the rules are learnable, and once you see how the pieces fit, the filing itself is not that bad. This guide for foreign-owned US businesses walks through who has to file IRS Form 5472, what you are actually reporting, when it is due, and how to stay out of penalty territory.
Form 5472 is an information return, which means it reports facts to the Internal Revenue Service but does not calculate any tax. You will not owe a dollar because of this form. Form 5472 is used to report the money moving between a US business and its foreign owners, under sections 6038A and 6038C of the Internal Revenue Code. The IRS overview of Form 5472 lays out the same starting point.
The full name tells you who it is for: Information Return of a 25% Foreign-Owned U.S. Corporation or a Foreign Corporation Engaged in a U.S. Trade or Business. Strip that down and two groups must file. The first is a US corporation that is at least 25% foreign-owned. The second is a foreign corporation doing business in the US, which must also file Form 5472. Form 5472 often surprises owners in both groups. Either one is called a reporting corporation, and Form 5472 requires reporting any transactions between the reporting corporation and foreign or domestic related parties. You are required to file Form 5472 whenever those transactions happen during the year. Miss that trigger and you may not realize you need to file Form 5472 at all.
There is a third group that catches the most people off guard, and it deserves its own section.
Here is where a lot of foreign founders get burned.
Before 2017, only corporations filed this form. Then the rules changed. Starting with tax years beginning on or after January 1, 2017, foreign-owned US disregarded entities got pulled in too, which in plain English usually means a single-member LLC owned by someone who is not American. These new filing and record-keeping obligations caught millions of small LLCs that never thought of themselves as filing anything.
A single-member LLC is normally invisible to the IRS for income tax. You report its activity on your own return and the LLC files nothing. But once it is owned by a foreign person, it is treated as a corporation solely for Form 5472 purposes, and Form 5472 must be filed every year the entity has a reportable transaction. Foreign-owned LLCs must file even when the business is dormant. That is true even if the LLC earned zero income. A foreign-owned LLC that only received a single capital contribution from its owner has a reportable transaction, and it has to file.
Because a disregarded entity has no tax return to attach the form to, it files a pro forma Form 1120 as a cover. You only fill in the name, address, EIN, and a couple of boxes, then write "Foreign-owned U.S. DE" across the top. The 1120 here is just an envelope. Form 5472 is the letter inside. If you run a clean set of books, this is far less painful, which is exactly why solid bookkeeping matters more than foreign owners expect.
This is the part people underestimate, so let me be specific.
A reportable transaction is almost any exchange of money or property between the reporting corporation and a related party. Sales, purchases, rents, royalties, interest, commissions, and loans all count. So do services and the use of property, even when no cash changes hands. There is no minimum dollar amount, so a single transaction of any size can trigger the filing.
For a foreign-owned LLC, the net is even wider. Beyond the usual sales and loans, you also file Form 5472 to report contributions and distributions. The money you put in to start the company counts. The money you take out counts. A founder who wires startup cash into the LLC, pays a few bills, and later draws profits has created a reportable transaction at each step, whether they realized it or not.
A related party is the other side of those transactions, and the definition is broad.
It starts with any 25% foreign shareholder, meaning a foreign person owning at least 25% of the company by vote or by value at any point in the year. Foreign related parties are the most common case, but related parties can be domestic too. From there it extends to anyone related to that owner or to the business under the tax code's attribution rules. Those rules pull in family members, so a spouse and children count toward the same ownership pool. If a foreign individual owns 15% and their spouse owns 12%, the IRS reads that as 27%, and the filing requirement is on.
Both direct and indirect foreign ownership count, which is why layered structures need a careful look before anyone assumes they are clear.
The mechanics are where small mistakes turn into expensive problems, so go slow here.
Form 5472 is never filed by itself. Your Form 5472 filing requirements depend on entity type, and the form is filed with the reporting corporation's income tax return by the due date of that return: a regular Form 1120 for a US corporation, an 1120-F for a foreign corporation, or the pro forma 1120 for a foreign-owned LLC. For a calendar-year filer, that return is due April 15, and a Form 7004 extension moves the deadline to October 15. The June 15 expat extension that applies to an individual Form 1040 does not help here, so do not count on it.
A few rules trip people up every season:
Get the entity classification and the deadline right, and the rest is mostly careful data entry. This is the kind of cross-border tax preparation where a second set of eyes pays for itself.
Now the part that makes Form 5472 penalties worth taking seriously.
Failure to file Form 5472, or filing a version the IRS considers incomplete or inaccurate, brings a $25,000 penalty per form. If you ignore an IRS notice, another $25,000 stacks on for each 30-day period that the failure continues past 90 days after the IRS reaches out, with no maximum. The penalty applies per related party and per year, so a missed form across a few years and a couple of parties can climb into six figures fast. There is also no statute of limitations until you actually file, which means an old miss never quietly goes away.
The most common Form 5472 mistakes are simple: a late submission, an incomplete form, or the wrong filing address. An incomplete Form 5472 can trigger the full penalty on its own, because the IRS treats a substantially incomplete return as not filed at all. The way to avoid penalties is not complicated. Handle the filing of Form 5472 on time, complete Form 5472 correctly, report every figure on Form 5472 accurately, and keep the records that back it up. If you have already missed a year, filing the late forms before the IRS contacts you gives you the best shot at penalty relief through a reasonable-cause request. Quiet correction beats waiting for a notice every time.
These two get mixed up constantly because the numbers look almost identical, but they point in opposite directions.
Form 5472 is inbound. It covers foreign money coming into a US business, filed by the US entity. Form 5471 is outbound. Form 5471 is filed by US persons who own shares in a foreign corporation. If you are an American with a company overseas, you are likely in 5471 territory. If you are a foreign owner of a US company, you need this form, and Form 5472 is the one to file.
Madras Accountancy helps US CPA firms handle exactly this kind of work, preparing the 1120 and 5472 packages for their foreign-owned clients and keeping the books that make every reportable transaction easy to support. If a foreign-owned LLC or corporation on your client list needs this filing, talk to our team and we will help you get it right.
1. Who must file Form 5472? Three groups file: a US corporation that is at least 25% foreign-owned, a foreign corporation engaged in a US trade or business, and a foreign-owned US disregarded entity such as a single-member LLC. In every case, the filing requirement applies only when there is a reportable transaction with a related party during the tax year.
2. Does a foreign-owned LLC with no income still need to file? Yes. A foreign-owned single-member LLC must file Form 5472 even with zero income, as long as it had a reportable transaction. A single capital contribution from the foreign owner counts as one, so most newly formed LLCs owned by a foreign person need to file from year one.
3. What is the penalty for not filing Form 5472? The penalty is $25,000 per form for failure to file, or for filing an incomplete or inaccurate one. If the failure continues more than 90 days after IRS notice, another $25,000 applies for each 30-day period, per related party, with no cap. There is no statute of limitations until the form is filed.
4. How does a foreign-owned LLC actually file Form 5472? The LLC attaches Form 5472 to a pro forma Form 1120, which serves only as a cover sheet and creates no tax. You complete basic identifying details, label it as a foreign-owned US disregarded entity across the top, and mail or fax it to the special IRS address in Ogden, since disregarded entities cannot e-file.
5. When is Form 5472 due? Form 5472 is due with the related income tax return. For a calendar-year filer that is April 15, with a Form 7004 extension available to October 15. The deadline is the same date as the underlying Form 1120, and the June 15 individual extension does not apply.
6. Do I file one Form 5472 for everything, or one per party? You file a separate Form 5472 for each related party you had reportable transactions with. If your company dealt with three related parties, you file three forms, all attached to a single pro forma 1120. This is also why penalties multiply, since each missed form is counted on its own.
7. What is the difference between Form 5472 and Form 5471? Form 5472 is filed by a foreign-owned US business to report transactions with foreign owners and related parties. Form 5471 is filed by US persons who own interests in a foreign corporation. One looks at foreign ownership of a US company, the other at US ownership of a foreign company.
8. Can I file Form 5472 electronically? A US corporation can file Form 5472 electronically as part of its Form 1120. A foreign-owned disregarded entity cannot. It must file the pro forma 1120 and Form 5472 by mail or fax to the dedicated IRS unit, following the address in the IRS instructions for Form 5472.
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