Filed Late or Never Filed Form 5472? Here's What to Do Now

You missed a Form 5472 filing — maybe one year, maybe several. You might have just found out the requirement exists. Or you knew about it and kept putting it off, hoping the IRS wouldn't notice.

The IRS notices eventually. But there is a formal procedure for fixing this without the worst-case penalties, and it's available to most foreign-owned LLC owners who come forward voluntarily. Here's what to do.

TL;DR — Late or Unfiled Form 5472

The penalty is $25,000 per form, per year, under IRC §6038A(d). It continues at $25,000 per 30-day period after the IRS notifies you of the failure.
The fix is the Delinquent International Information Return Submission Procedure (DIIRSP): file all missing returns together with a reasonable cause statement.
No special IRS program needed. DIIRSP is filed through normal channels — it's a package of returns plus a cover letter, not an online application.
Earlier is better. Penalties start running from the original due date. The sooner you file, the less exposure you have.
Most foreign owners qualify for reasonable cause abatement if the failure was due to not knowing about the requirement.

What the penalty actually looks like

Under IRC §6038A(d), the IRS can assess:

$25,000 per form, per tax year for failure to file or failure to maintain records.
An additional $25,000 for each 30-day period (or part of a period) after the IRS mails a notice of failure, capped at nothing — the statute doesn't impose a ceiling on the continuation penalty.

So if you missed Form 5472 for three years, the initial exposure is $75,000. If the IRS sends a notice and you don't respond, the continuation penalties keep stacking. This is why acting before an IRS notice arrives changes your situation dramatically.

One clarification worth making: the $25,000 penalty is per form, not per transaction. If you have one LLC and one foreign owner, that's typically one Form 5472 per year — so $25,000 per missed year.

DIIRSP: the structured way to fix this

The Delinquent International Information Return Submission Procedure is the IRS-endorsed path for foreign-owned LLC owners who have missed Form 5472 (and similar international information returns like Forms 5471, 8865, 8938, or 3520).

It works like this:

Prepare all missing returns. For each year you didn't file, you need a pro forma Form 1120 and a Form 5472. For most foreign-owned single-member LLCs, this is a straightforward package — the Form 1120 is essentially blank, and the Form 5472 lists your intercompany transactions (capital contributions, distributions, loans).
Write a reasonable cause statement. This is a letter — typically one to two pages — explaining why you didn't file. For most foreign owners, the honest reason is that they didn't know the requirement existed. That's generally sufficient for the IRS to waive penalties, provided it's credible and consistent with your situation.
Assemble the package. The cover letter cites the DIIRSP submission. Behind it go the pro forma 1120 and Form 5472 for each tax year, in chronological order, with the reasonable cause statement at the front.
Fax to the IRS Ogden PIN Unit. The fax number is +1-855-887-7737. You cannot e-file this package or mail it to a regular IRS center.

That's the entire procedure. There's no application to submit, no online form, no IRS hotline to call first. You prepare the package, write the statement, and fax it.

How many years do you need to file?

There's no statute of limitations on unfiled returns in most circumstances. For returns that were never filed, the three-year assessment period doesn't start running. In theory, the IRS could go back indefinitely.

In practice, DIIRSP submissions typically cover the last six years. If your LLC has existed for fewer than six years, you'd file for every year it existed. If it's older, filing six years of returns is generally sufficient to demonstrate good faith and stop the accumulating exposure.

If there are reasons to go further back — for example, an IRS notice already references a specific year, or you have unusual circumstances — file those years too. The goal is to have no gaps.

What counts as "reasonable cause"

The reasonable cause standard under Treas. Reg. §301.6724-1 means you exercised ordinary business care and prudence but still failed to file correctly. For Form 5472, the IRS has generally accepted:

Not knowing about the requirement. Foreign nationals who opened a US LLC for business reasons, relying on a state formation service or a general business advisor who didn't flag the IRS filing obligation, have a strong argument here.
Relying on a professional who gave incorrect advice. If your accountant or lawyer told you no filing was required and that advice was wrong, reliance on a tax professional is a recognized reasonable cause category.
Receiving conflicting information. If you had a genuine good-faith belief that no return was required — for example, because you thought the LLC was truly dormant and the zero-transaction rule applied — that's also a reasonable cause argument.

What doesn't work: "I was busy," "the penalties seem harsh," or vague references to hardship without connecting them to why you didn't file. The statement needs to be specific about your situation.

What to include in the reasonable cause statement

A solid reasonable cause statement covers:

Your background: Who you are, where you're based, when you formed the LLC and why.
How you became aware of the filing requirement: Date you found out, how (accountant, article, etc.).
Why you didn't file earlier: This is the core. Be honest and specific.
Your compliance going forward: A sentence or two confirming you're now filing all required returns.

Keep it factual. Avoid emotional appeals or lengthy explanations of how unfair the penalties are. The IRS reviewer is checking whether your circumstances fit a recognized exception — not whether the rule seems reasonable.

The timeline: what happens after you fax

After your DIIRSP package arrives at the IRS Ogden PIN Unit:

Initial review (4–8 weeks typically): The IRS processes the returns and checks whether they're complete.
If the package is accepted: The IRS processes the returns, applies any penalty abatement granted by the reasonable cause statement, and closes the case. You may receive a notice confirming acceptance or you may simply hear nothing — no news is generally good news.
If there are questions: The IRS may send a notice requesting additional information or clarification about specific items on the returns. Respond promptly and in writing.
If penalty abatement is denied: You can appeal. The reasonable cause argument is reviewable at the Appeals level.

Most DIIRSP submissions for foreign-owned LLCs with no complex transactions are processed without incident, especially when the reasonable cause statement is well-drafted and the returns are complete.

Can you dissolve the LLC instead of filing?

Dissolving the LLC closes the entity going forward and stops the clock on future filing obligations. But it does not eliminate the filing obligation for years the LLC existed. A dissolved LLC with three years of unfiled Form 5472s still has $75,000 of potential penalties outstanding. Dissolution and back-filing are separate steps — ideally you'd do both.

If you dissolve the LLC without filing the back-returns, the IRS still has your EIN and can assess penalties. The LLC being dissolved doesn't make the prior years go away.

How to get this done

The most common mistake is treating this as something to handle "eventually." Every month that passes before you file is a month the continuation penalty clock could start running once the IRS flags the issue. The IRS matching program doesn't send a warning — it sends a notice of penalty assessment.

If you want to handle this yourself, you need:

A pro forma Form 1120 for each missed year (blank except for entity info)
Form 5472 for each year (Part I, Part II, Part III with transactions, and Part V if applicable)
A well-drafted reasonable cause statement

If you want someone else to handle it: we prepare the complete DIIRSP package — all years, the reasonable cause statement, and fax to the IRS — for a flat fee.

Frequently asked questions

Can I go to jail for not filing Form 5472?

Form 5472 is an information return, not a tax return, so there's no criminal penalty for non-filing in the usual sense. The penalty is civil — $25,000 per form. However, if the failure to file is part of a pattern of tax evasion, other charges can apply. Most foreign owners dealing with inadvertent non-filing have no criminal exposure.

Do I need to amend my state tax returns too?

Form 5472 is a federal IRS filing. Most states don't have an equivalent for single-member LLCs that are disregarded entities. You may have state-level annual report requirements or franchise tax filings, but those are separate from this.

My LLC has a different tax year. Does the April 15 deadline still apply?

Form 5472 for a disregarded entity is due when the pro forma Form 1120 is due — which for calendar-year LLCs is April 15, extendable to October 15 with Form 7004. If your LLC has a non-calendar tax year, the deadline shifts accordingly.

What if I've already received an IRS penalty notice?

You can still respond with a reasonable cause statement and request abatement. File the missing returns immediately, attach the statement, and request abatement in the same submission. The continuation penalty clock stops once you've filed. See a tax professional if the notice references a specific dollar amount — you'll want to verify what years are covered.

Is first-time abatement available for Form 5472 penalties?

The IRS First-Time Abatement (FTA) policy technically applies to penalties under IRC §6651, §6654, and §6655 — but not to §6038A international information return penalties. FTA is not the right tool here. Reasonable cause abatement is.

The bottom line

Late Form 5472 filings are fixable. The IRS has a procedure for it, most foreign owners qualify for reasonable cause abatement, and the penalty exposure largely disappears once you've filed properly.

What makes this worse is waiting. Act before the IRS sends a notice, and you control the narrative entirely. Act after, and you're responding to a penalty assessment instead of volunteering to fix an oversight.

See also: what Form 5472 is and who needs to file, and our dormant LLC guide if your LLC had little or no activity during the missed years.

Ready to file? Start here.