Form 5472 + 1120 filing service
Filed Form 5472 Late? Here's What to Do Now
If you missed the April 15 deadline for Form 5472, file as soon as possible. The IRS Delinquent International Information Return Submission Procedure (DIIRSP) lets you submit late filings with a Reasonable Cause Statement requesting that the $25,000 penalty be waived. The longer you wait, the higher the risk of an automatic CP-15 penalty notice — and once that notice arrives, your options narrow sharply. This is the complete playbook for getting back into compliance from one missed year to many.
15 min
average completion
IRS forms
filled, not redrawn
Faxed for you
to Ogden PIN Unit
Receipt stored
proof of filing
How late can you actually file?#
Technically there is no statute of limitations on filing Form 5472 itself — you can file for tax years going back to when your LLC was formed.
Practically, the longer you wait, the worse the risk profile:
• Within a few months of the deadline: very low risk. File under DIIRSP with reasonable cause and most filings are accepted with no penalty.
• 1-2 years late: still very workable. DIIRSP path with reasonable cause is the standard approach, high acceptance rate for first-time delinquencies.
• 3+ years late: still file (DIIRSP for the most recent 3 years; older years may need a different path), but the IRS may have already issued a notice you didn't see.
• Already received a CP-15 notice: DIIRSP is no longer the right path for that year — you respond to the notice with an abatement request and appeal if denied.
What happens if you miss the deadline entirely?#
Within 6-18 months of the missed deadline, the IRS automated system issues a CP-15 notice to the LLC's US address of record, assessing the $25,000 penalty. Once that notice arrives, your options narrow:
• Pay the $25,000 (worst outcome for most owners).
• File a Form 843 abatement claim — much harder than DIIRSP and lower success rate because the IRS already evaluated.
• Appeal through the IRS Office of Appeals (months of process).
• Ignore the notice — the worst path. Continuation penalties accrue at $25,000 per 30-day period after the 90-day grace window. Collection action can begin against the LLC's US-banked funds.
If the LLC's US address can't receive mail (e.g. a virtual mailbox that bounces IRS mail), you might not even see the CP-15 — but the penalty is still assessed and accruing.
What should you do if you've missed one year?#
1. Don't panic. The IRS has not yet assessed the penalty if you haven't received a CP-15 notice.
2. Prepare the late return immediately. You need: cover letter, pro forma Form 1120, Form 5472, Part V supporting statement, AND a Reasonable Cause Statement at the front.
3. Write the Reasonable Cause Statement (or use our service to generate one tailored to the most common first-time-foreign-owner scenario).
4. File via DIIRSP — fax to +1-855-887-7737 (IRS Ogden PIN Unit), or mail certified to IRS Ogden, UT 84201-0023.
5. Keep the fax transmission receipt as your timestamped proof of DIIRSP filing.
6. Set up an annual reminder so you file on time going forward (or sign up for an annual filing service).
What should you do if you've missed multiple years?#
File ALL missed years in one DIIRSP package. Don't space them out. The IRS treats a comprehensive catch-up filing more favorably than serial late filings — one consistent reasonable cause narrative covering the whole period is stronger than separate filings each blaming the same circumstances.
Our multi-year DIIRSP packages:
• 2-year catch-up: Standard $348 · Rush $428 · Premium $598 (fax included)
• 3-year catch-up: Standard $497 · Rush $577 · Premium $747 (fax included)
The wizard generates one cover letter, one Reasonable Cause Statement (covering all years), and a separate fully-completed Form 5472 + pro forma 1120 for each year. Everything assembled into one package, faxed once, with one timestamped receipt per year.
For 4+ missed years, run two back-to-back packages or message us and we'll coordinate.
What should you include in your Reasonable Cause Statement?#
The IRS looks for evidence you acted with "ordinary business care and prudence." Strong statements include:
• A clear timeline of when and how you became aware of the Form 5472 obligation.
• Specific personal circumstances — first-time foreign owner, reliance on a tax pro who didn't flag the obligation, language barrier, LLC was set up by an accelerator/Stripe Atlas package that didn't include annual compliance.
• Evidence of prompt corrective action upon learning of the failure.
• Explicit statement that no US tax is owed (this is true for almost all foreign-owned single-member LLCs).
• Confirmation that you've taken steps to ensure future compliance — annual reminder, calendar entry, filing service subscription.
• Concise — 1-2 pages.
Avoid vague excuses, contradictions with the form data, or aggressive language. Our auto-generated statement is tailored to the most common scenario and editable in the wizard if your facts are different.
What should you do if you've already received a CP-15 notice?#
DIIRSP is no longer the right path for that specific year — once the IRS has formally assessed a penalty, you're in the post-assessment abatement process. Steps:
1. Respond within 30 days of the notice (the notice will state the deadline).
2. File the late Form 5472 + pro forma 1120 separately if not already done.
3. Submit Form 843 (Claim for Refund and Request for Abatement) with a strong reasonable cause explanation tied to your specific facts.
4. If Form 843 is denied, appeal to the IRS Office of Appeals.
5. Consider engaging a tax attorney or enrolled agent — post-assessment appeals are more complex than DIIRSP and a professional adds value.
We don't currently handle CP-15 abatement appeals — only preventative DIIRSP filings. If you have a CP-15 notice already, talk to a US tax professional who handles international information return penalties.
For any other unfiled years where you haven't been contacted yet, DIIRSP is still available — file those concurrently while you handle the CP-15 for the assessed year.
How long until you hear back from the IRS?#
After a DIIRSP filing, typical timeline:
• Day 0-2: Fax delivered. No IRS acknowledgment yet — that's normal.
• Week 4-8: Internal processing at IRS Ogden Service Center.
• Month 3-6: IRS reviews the reasonable cause request. Most cases: no news = acceptance.
• Month 4-9: If they want more info, you'll get a Letter 5891 or similar — respond promptly.
• Month 6-12: If they assess the penalty anyway, you'll get a CP-15. You can appeal.
Keep the entire filing package (signed PDF, reasonable cause statement, fax receipt) for at least 6 years. If the IRS contacts you 18 months later about year 2, you'll want the original receipts to prove timely DIIRSP submission.
What are real-world late-filing scenarios?#
Scenario A — just-missed: Carlos formed his Wyoming LLC in 2023, learned about Form 5472 in May 2025 (one month after the 2024 return was due). Files DIIRSP for tax year 2024 immediately. Typical outcome: no penalty assessed.
Scenario B — three-year catch-up: Mei has had a Delaware LLC since 2022, never filed. Discovers obligation in 2026. Files 2022, 2023, 2024, and 2025 together in one DIIRSP package. (Our wizard supports 3 years, so 2022 would run as a separate filing.) Typical outcome: penalty abatement granted across all years.
Scenario C — ignored a CP-15: Ahmed received a CP-15 in July 2024 for tax year 2022. By 2026, continuation penalties have stacked to $100,000+. Needs both to file the actual return AND to engage a tax professional to handle the assessed penalty appeal. Much more expensive and stressful than scenarios A and B.
The takeaway: act fast. Even multi-year catch-up is vastly cheaper than waiting for an IRS notice and then delaying.
Will the IRS notice if I don't file?#
No. The IRS has known about foreign-owned single-member LLCs as a focus area since 2017, when the §6038A reporting rule was extended to them. Since 2018, penalty assessment for missed Form 5472 has been automated.
How the IRS finds you:
• EIN database cross-reference — every EIN issued to a foreign-owned entity is flagged for expected annual returns.
• Stripe Atlas / Mercury / formation services occasionally share aggregate data with the IRS for compliance purposes.
• Bank account openings (foreign-owned US LLC accounts trigger reporting under various AML / KYC frameworks).
• Customer 1099-K reports — if your LLC received payment processing volume from US-based processors (Stripe, PayPal, Square), the IRS sees the LLC's EIN reported on those forms.
The IRS doesn't usually catch every non-filer in year 1, but the longer you wait the more likely they catch up. CP-15 notices are routine for foreign-owned LLCs that miss Form 5472. Don't bet on silence.
Get caught up in 15 minutes#
Our DIIRSP-aware filer handles the entire late-filing package. The wizard asks 12 questions about your LLC, owner, and year-end totals for each missed year. We generate everything — cover letter, pro forma Form 1120, Form 5472, Part V supporting statement, AND the Reasonable Cause Statement.
You sign once on screen. An accountant on our team reviews the package. We fax to the IRS Ogden PIN Unit and email you the timestamped receipt for each year as proof of DIIRSP submission.
• 1 year: Standard $199 · Rush $279 · Premium $449 (fax included)
• 2 years (DIIRSP): Standard $348 · Rush $428 · Premium $598 (fax included)
• 3 years (DIIRSP): Standard $497 · Rush $577 · Premium $747 (fax included)
100% money-back guarantee if we fail to submit your filing to the IRS.
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Flat-rate Form 5472 filing.
One-time fee per filing. No subscription. IRS fax delivery to the Ogden PIN Unit is included on every plan.
Fax filing included on every plan
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$199/ filing
- ✓Reviewed by a qualified tax accountant before submission
- ✓Form 5472 + pro forma 1120 prepared
- ✓Fax filing to IRS Ogden included
- ✓Filing confirmation
- ✓Reasonable-cause letter (for late filings)
- ✓Email support
+ $149 per additional year·Saves you from the $25,000-per-form IRS penalty
Frequently asked questions
- How late can I be before DIIRSP no longer works?
- There's no hard deadline — DIIRSP is available until the IRS contacts you about the specific delinquency. Once a CP-15 arrives for a tax year, you must use a different abatement appeal process for THAT year. DIIRSP remains available for any other unfiled years where you haven't been contacted.
- Is there a chance the IRS just won't notice?
- Unlikely. The IRS automated system cross-references EIN holders, foreign-owned DEs have been a focus area since 2017, and CP-15 notices for missed Form 5472 are routine. The longer you wait the more likely the catch-up turns into a defensive penalty appeal.
- Can I file under DIIRSP myself?
- Yes. The procedure is publicly documented. The hardest part is writing a strong Reasonable Cause Statement tied to your specific circumstances. Our service auto-generates one based on the most common scenario, and you can edit it.
- Will I owe back taxes too?
- Almost certainly not. Form 5472 is an informational filing — no tax liability is calculated on it. For most foreign-owned single-member LLCs, US federal income tax is $0 regardless of how late you file. DIIRSP is specifically for information-return delinquencies where no tax is owed.
- What if I only have records for some of the missed years?
- File for the years you have records. Reconstruct what you can — bank statements, Stripe / PayPal reports, contracts — for any year where records are incomplete. Then submit best-available data with a note in the reasonable cause statement explaining the partial records.
- How do I know the fax actually delivered to the IRS?
- Your fax service generates a transmission receipt with delivery confirmation and timestamp. That receipt is your legal proof of timely DIIRSP filing. If you use our service, we email you the receipt as a PDF, and a copy stays in your portal.
- Can I file under DIIRSP for years where the LLC was inactive?
- If the LLC had at least one reportable transaction during the year (even a single capital contribution), yes — file under DIIRSP. If truly inactive (no bank account, no money in or out, no contracts), you may not have had a reportable transaction at all and no filing was required. The bar is low — most owners file regardless.
- What if I get a CP-15 between filing under DIIRSP and the IRS responding?
- Unusual but it can happen if there's a processing delay. Respond to the CP-15 by referencing your DIIRSP submission (including the fax receipt date) and request the penalty be removed since you filed voluntarily under the procedure before the notice issued.
- Should I file under DIIRSP if I'm planning to dissolve the LLC?
- Yes. Dissolution doesn't erase past filing obligations. The IRS can still assess penalties for missed years after the LLC is dissolved — and it's much harder to defend a non-filing once the entity no longer exists. Catch up first, then dissolve.
- Does your service handle CP-15 abatement appeals?
- Not currently. We handle preventative DIIRSP filings only. If you've already received a CP-15, contact a tax attorney or enrolled agent who handles international information return penalty appeals.
Related guides
DIIRSP: Filing Late Form 5472 with Penalty Abatement
The IRS Delinquent International Information Return Submission Procedure (DIIRSP) is the official way to catch up on missed Form 5472 filings while requesting that the $25,000-per-form-per-year penalty be waived. Filing under DIIRSP requires a properly written Reasonable Cause Statement attached to each late return. Get it right and most first-time filers walk away with no penalty assessed. Get it wrong — or do nothing — and the IRS will eventually mail a CP-15 notice and start the clock on continuation penalties.
The Form 5472 $25,000 Penalty Explained
Under IRC § 6038A(d), the IRS automatically assesses a $25,000 penalty per Form 5472 that is filed late, filed incompletely, or not filed at all — per year, per LLC. The penalty stacks at $25,000 per 30-day period if you don't fix it within 90 days of an IRS notice. Here's exactly how the penalty works, who it applies to, how to either avoid it entirely, and how to request abatement if you've already triggered it.
How to File IRS Form 5472
Foreign-owned US single-member LLCs must file Form 5472 with an attached pro forma Form 1120 by April 15 each year. You can't e-file — the IRS only accepts these forms by mail or fax to the Ogden PIN Unit at +1-855-887-7737. Below is the full step-by-step process, broken down into every form, field, and decision you'll face — or skip the work entirely and use our accountant-reviewed 15-minute online filer from $199.
Reasonable cause statement for Form 5472 — what to include
If you're filing Form 5472 late, the IRS requires a Reasonable Cause Statement under DIIRSP (Delinquent International Information Return Submission Procedure) to request abatement of the $25,000-per-form-per-year penalty. Done right, it can save tens of thousands of dollars. Done poorly — or skipped entirely — and the penalty is assessed automatically. This is the complete guide: what the IRS expects, what to include, what kills a request, sample structure, and how our DIIRSP-aware filer generates one for you that's accountant-reviewed before fax submission.