If you just opened an envelope from the IRS that references Form 5472 and a $25,000 penalty, your stomach probably dropped. This is the guide for that moment. It explains what the notice is, what the deadline on it means, and the three realistic paths to resolve it.
TL;DR
- You have 30 days from the notice date to respond (read the notice — the exact deadline is on it).
- Penalty abatement is still available via reasonable cause or First-Time Abatement, even after a notice.
- The continuation penalty clock under IRC §6038A(d)(2) starts 90 days after the notice, so acting in the first 90 days avoids it compounding.
- Do NOT ignore the notice. Collection action (liens, levies on US bank accounts) starts if the penalty becomes final without response.
What kind of notice do I have?
The most common Form 5472 penalty notice is a CP-215 (Notice of Penalty Charge) or a Letter 3903 series notice. Look at the top right of your letter; the notice code is printed there. Both notices say roughly the same thing: the IRS has determined you failed to file a required Form 5472 for a specific tax year, and they are assessing the $25,000 penalty under IRC §6038A(d)(1).
The notice will include:
- The tax year in question.
- The penalty amount ($25,000 per form missed).
- A response deadline (typically 30 days from the notice date).
- Instructions for how to respond (usually by mail to a specific IRS address).
What the deadline actually means
The 30-day deadline on the notice is your window to respond BEFORE the penalty becomes a final assessment. Respond by that date and the IRS treats your response as a timely protest. Miss it, and the penalty becomes assessed debt subject to collection.
A separate and more important deadline: the continuation penalty under IRC §6038A(d)(2) starts running 90 days after the notice is mailed to you. Each 30-day period you remain non-compliant after that 90-day mark adds another $25,000, with no statutory cap. This is why fast action matters, not just responding but actually filing the missing return.
The practical rule: respond within 30 days AND file the missing return within 90 days.
Path 1: Reasonable Cause (most common)
Attach a reasonable cause statement to your response and ask the IRS to abate the penalty. The standards are in IRM 20.1.1.3.2 and focus on whether you exercised ordinary business care and prudence.
For foreign-owned LLC owners, the most accepted reasonable cause narratives are:
- You did not know about Form 5472 because your formation service never mentioned it.
- Your accountant (in the US or abroad) was not familiar with this specific form.
- You acted promptly once you learned of the obligation.
See our guide on reasonable cause statements for the exact structure. The same four elements that support a voluntary filing also support a post-notice abatement request.
Path 2: First-Time Abatement (FTA)
Even without reasonable cause, if you have a clean compliance history for the three years prior to the penalty year, you can request a First-Time Penalty Abatement. This is an administrative waiver that does NOT require you to show reasonable cause.
The requirements are straightforward:
- You filed all currently required returns (or will file them as part of resolving this notice).
- You paid any tax due (or arranged to).
- You have no significant penalties in the three tax years before the penalty year.
For first-time foreign-owned LLC filers, FTA is often available because there is no prior compliance history to disqualify the request. You typically request FTA by calling the IRS number on the notice or submitting a written request citing the administrative waiver.
Path 3: Pay the penalty and move on
If your facts are weak for reasonable cause (you knew about the form and deliberately ignored it, or you have ignored multiple notices) and FTA is not available, paying the penalty might be the path of least resistance. This is rare for first-time filers but worth noting as an option.
How to structure your response
A solid response to a Form 5472 penalty notice includes:
- Cover letter referencing the notice number, date, and tax year.
- The late Form 5472 + pro forma Form 1120 for the missing year (if not already filed). The IRS needs the substantive filing in hand, not just a request to waive the penalty.
- Reasonable cause statement (Path 1) or FTA request language (Path 2), or both.
- Perjury declaration and signature on the reasonable cause statement per 28 USC 1746.
Mail the package to the address on the notice via certified mail with return receipt so you have proof of timely response. Keep a copy of everything.
Common mistakes responding to a 5472 notice
Responding without actually filing the missing return
A reasonable cause statement alone is not enough. The IRS needs the late Form 5472 itself. Filing the return is what resolves the underlying violation; the statement only addresses the penalty.
Sending the response to the wrong address
The address on the notice is different from the general DE fax number (855-887-7737). Penalty correspondence goes to a specific IRS address that is printed on the notice. Do not default to the fax number.
Missing the 30-day deadline
If you need more time to compile the response, call the phone number on the notice and request an extension. In most cases the IRS will grant it if you are actively working on a response.
Not asking for FTA when you qualify
FTA is often the simplest path and it requires explicitly requesting it. If you just send a reasonable cause statement without asking about FTA, the IRS may not consider it. One sentence in your cover letter: "We are also requesting First-Time Penalty Abatement under the administrative waiver for taxpayers with a clean three-year compliance history."
What about hiring a professional?
For a first-time single-year penalty notice on a foreign-owned LLC with clean prior history, self-representation is usually fine. The IRS accepts well-structured reasonable cause statements from taxpayers directly, and FTA requests are routine.
For situations with multi-year exposure, prior IRS disputes, large dollar amounts, or complex ownership structures (multiple entities, trusts), retaining a tax attorney or enrolled agent is worth the cost.
What happens after you respond
The IRS takes anywhere from 2 to 12 months to process a penalty abatement request. During that time the penalty technically exists but is in "suspended" status pending review. Collection action typically pauses while a protest is under review.
Possible outcomes:
- Full abatement: penalty removed, nothing owed.
- Partial abatement: penalty reduced. Uncommon for §6038A(d) which is a fixed $25,000 per form.
- Denial: you can appeal to the IRS Office of Appeals within 30 days of the denial letter.
For first-time filers who respond promptly with good reasonable cause or FTA, full abatement is by far the most common outcome.
How Filabl fits in
If the missing return is what you are stuck on, Filabl generates a complete Form 5472 + pro forma 1120 + reasonable cause statement package in about 20 minutes from bank statement data. For notice responses specifically, you would use the generated return as the substantive filing and add your own penalty abatement request with the cover letter and FTA language.
This article is general information about IRS penalty notices, not legal advice. For any notice involving multiple years, large dollar amounts, or if you have already received a denial letter, consult a tax attorney or enrolled agent.