Missed Form 5472? Four Situations, and the Relief Path for Each
Summary
File voluntarily with a reasonable cause statement before the IRS writes; answer with Form 843 after it does. Complex facts need a CPA review first, whichever side of a notice you are on.
Two questions sort every missed Form 5472 into a relief path. Has the IRS written to the LLC about it? And are the facts simple: one foreign owner, ordinary transactions with that owner, no US business income? The answers give four situations.
| Situation | IRS has written? | Facts | Relief path |
|---|---|---|---|
| A. One year missed | No | Simple | File that year with a reasonable cause statement |
| B. Several years missed | No | Simple | File every year at once under one statement |
| C. A CP15 or CP215 in hand | Yes | Either | File the missing return, then Form 843 |
| D. Complex facts | Either | Not simple | A qualified CPA review before anything is filed |
Find your row, then read only that section. The amount at stake in each case is set out on the $25,000 penalty page.
Situation A: one year missed, no letter from the IRS
A founder forms a Wyoming LLC in February 2025, funds it from a personal account abroad, and learns in August 2026 that a return was due on April 15, 2026. No IRS letter has arrived.
This is the easiest case to put right. The continuation penalty under IRC §6038A(d)(2) has not started, because it runs only from an IRS notice. The path is to file the 2025 Form 5472 and pro forma Form 1120 now, with a reasonable cause statement attached that asks the IRS not to assess the penalty under IRC §6664(c).
The IRS does not pre-approve a statement. It reads the one attached to the return and either accepts it or assesses and asks for more. What makes the statement credible is the timeline: when the LLC was formed, how the requirement came to light, and how quickly the return followed.
Situation B: several years missed, no letter from the IRS
Same founder, but the LLC was formed in 2022 and nothing has ever been filed. Four years are open: 2022, 2023, 2024 and 2025.
The path is still voluntary filing, with two differences. Every open year goes in together, each with its own Form 5472 and pro forma Form 1120, in order from the oldest. And one statement covers the whole period, explaining why the failure continued, which is usually the same reason it began: nobody the founder dealt with had mentioned it.
Sending the years one at a time is the common mistake here. Reasonable cause rests on acting promptly once you knew, and a two-month gap between years is hard to explain. The multiple years late page follows one four-year case from start to finish.
Situation C: the IRS has sent a CP15 or CP215
A notice means the IRS has already assessed the penalty for a named year. Two things are now true that were not before.
The continuation penalty is possible. If the failure is not corrected within 90 days of the notice, IRC §6038A(d)(2) adds $25,000 for each further 30-day period. So the first action is to file the missing return for that year, because filing is what stops that clock.
The vehicle for asking the IRS to remove the assessed penalty is Form 843, with the reasonable cause statement attached. The Form 843 page covers each field, and the CP15 and CP215 page explains how to read the notice and which date counts.
A notice for one year says nothing about the others. If later years are also open, file them in the same week, under Situation B's approach, rather than waiting for their notices.
Situation D: the facts are not simple
Any of these puts a case outside the simple rows, with or without a notice:
- the LLC earned income from a trade or business in the US, not just payments abroad;
- it transacted with more than one foreign related party, for example the owner's company in another country;
- there were loans or service arrangements between the LLC and foreign affiliates;
- the LLC is in, or heading into, a sale, an investment round or a bank's enhanced review.
These cases can need more than Form 5472: a different return, a view on how the income is characterized, or support for intercompany pricing. An automated filing is not the right tool, and a qualified CPA review is the appropriate next step before anything is sent.
Why doing nothing is never one of the paths
The period the IRS has to assess does not start while Form 5472 is missing. Under IRC §6501(c)(8), the assessment period for the whole return stays open until the form is filed, so an unfiled year from 2021 is as open as one from 2025. The statute of limitations page explains the rule in full.
The practical pressure usually arrives from elsewhere first: a bank's compliance review, a payment processor, an investor's due diligence. Each of those asks for filed returns, and none of them waits for the IRS.
What reasonable cause means in these cases
Reasonable cause under IRC §6664(c) asks whether the owner used ordinary business care and prudence. Examiners work through the framework in IRM 20.1.1.3.6.1.
For a foreign owner the facts that carry weight are usually these: the LLC was formed through a service that did not mention the filing, the owner had no US adviser, the owner lives where this kind of return is not part of ordinary professional knowledge, and the returns were filed promptly after the requirement came to light. What does not help is silence. A late return filed with no statement gives the IRS nothing to weigh.
First-Time Abatement, which applies to some other IRS penalties, is not used for these penalties. The relief paths compared page explains why.
If you are in Situation A or B, FileTax prepares every open year's Form 5472 and pro forma Form 1120 as one job at $99 per year, and one CPA-authored reasonable cause letter covering every year for $199. Filing past years shows how it works. Situations C and D start with the steps above.
Questions about which path applies
I found out from my bank, not the IRS. Which situation is that?
A or B. A bank asking for filed returns is not IRS contact. Until an IRS notice names the LLC, you are filing voluntarily.
Does a letter about one year put every year into Situation C?
No. A notice is for the year it names. The other open years are still voluntary filings, and they should go in at the same time.
My LLC had no income. Can I skip the missed years?
Income is not the test. A year needs Form 5472 if the LLC had a reportable transaction with a foreign related party, and funding the LLC or paying its fees personally usually counts. A year with truly no transactions may not need a return.
Can I file the missed years myself?
In Situations A and B, many owners do, using the Instructions for Form 5472. The work is in getting every year's transactions right and writing a statement that tells a consistent story across all of them.
I am not sure whether my facts are simple. What decides it?
Three things make a case not simple: income from a trade or business in the US, dealings with a foreign related party other than you, and loans or service arrangements with affiliates. If none applies, your facts are simple.
Does it matter which year I discovered the requirement?
Yes. What matters most is the gap between finding out and filing. A short gap supports reasonable cause; a long one weakens it, whatever year it was.
Related pages
Continue reading
$25,000 IRS Penalty for Foreign LLC - What to Do Right Now →
The $25,000 IRS penalty under §6038A applies to foreign-owned US LLCs that miss their annual Form 5472 filing. Filing voluntarily before any IRS notice is the strongest defense.
Several Years of Form 5472 Late: One Catch-Up, Start to Finish →
Every open year gets its own Form 5472 and pro forma Form 1120, oldest first, all sent together under one reasonable cause statement. Filing only the latest year invites a question about the rest.
Form 843 for a Form 5472 Penalty, Line by Line →
Tick the reasonable cause box, enter IRC 6038A(d)(1) on line 6, and attach a statement that proves ordinary business care. File the missing Form 5472 first, because Form 843 stops nothing.