You will confirm the taxpayer’s identifying details, give the IRS a clean TIN status, and, if needed, show reasonable cause. Then you will send it exactly the way the letter tells you to, and you will keep proof.
Key Takeaways
- Form 13997 rides along with IRS Letter 4318 to validate a taxpayer identification number and, if needed, present a reasonable cause statement under IRC §6039E.
- The penalty tied to §6039E is generally $500 per application, unless reasonable cause applies. The IRS gives a notice and a window to respond before assessing it.
- You must follow Letter 4318’s return instructions, address, and deadline. Form 13997 itself says do not send it to a generic address and directs you back to the letter.
- Form 13997 requires a signature. The latest official supporting statement says this form is not filed electronically, so plan to return it as the letter instructs, usually by mail or fax.
- Keep copies of everything. Tax return information is confidential under IRC §6103, and the form displays OMB control number 1545‑2144.
What Form 13997 is and why you received Letter 4318
Form 13997 is a one‑page IRS form titled “Validating Your TIN and Reasonable Cause.” The IRS uses it when someone who applied for a U.S. passport or for lawful permanent residence did not provide all §6039E information, especially a valid SSN or other TIN. Letter 4318 explains the issue and asks the individual to complete and return Form 13997.
Under IRC §6039E, certain passport or permanent resident applicants must give specific identifying information, including their TIN if issued. If the information is missing or incorrect, the IRS can assess a penalty unless the person shows reasonable cause. Form 13997 is the IRS’s way to gather the missing TIN details and any reasonable cause statement.
How the law and the timeline work
The regulations provide a response window after the IRS notifies you of a potential penalty. Generally, passport applicants have 60 days from the date of the notice to respond, or 90 days if the notice is addressed to someone outside the United States. If you show the failure was due to reasonable cause and not willful neglect, the IRS should not assess the penalty.
The penalty amount tied to §6039E is $500 per application. IRS internal guidance confirms the amount and clarifies that only one $500 penalty can be asserted per application.
Letter 4318 is the controlling document
Form 13997 itself tells you not to mail it to a generic address. Instead, follow the “What You Need to Do” section in the letter that came with it. That is your routing, your deadline, and your checklist for supporting documents. The IRS’s OMB filing for this form also notes that it is sent as a specialized attachment to Letter 4318.
Quick note on different passport issues
Do not confuse Letter 4318 and Form 13997 with the separate passport debt certification process for seriously delinquent tax debt, which involves CP508C notices and different rules. That program is unrelated to §6039E TIN validation. If you are curious, the IRS posts yearly thresholds and procedures for debt certification separately.
What to do first
- Read Letter 4318 end to end and mark the due date. If the taxpayer is outside the U.S., note the 90‑day window.
- Download the official Form 13997 PDF and skim the attestation and privacy notice so you understand what you are certifying.
- Start a small file, digital or paper. Put the letter, the filled form, supporting proof, and your mailing or fax confirmation in one place. This saves review time later.
Treat the response like a mini case file. Clear form, clean support, and proof of transmission are what protect you if the IRS asks questions later.
Step‑by‑step, how to complete Form 13997
You can complete Form 13997 in a single sitting if you gather the right details first. The form asks for the correct SSN or TIN if one exists, a concise reasonable cause statement if information was missing or incorrect, and your signature.
Gather these documents before you write
- Identification and name history, for example passport, birth certificate, marriage certificate, court order, or other name‑change evidence.
- Application records, for example U.S. passport or permanent residence application receipts, State Department or USCIS notices, appointment confirmations, and any tracking emails.
- TIN evidence, for example Social Security card, SSA letter, or ITIN records if applicable.
- Any correspondence that shows attempts to obtain or correct a TIN, for example SSA visit receipts, call logs, or confirmation numbers.
You will use these to match facts and dates in your reasonable cause statement and to avoid conflicts across documents.
Write a concise reasonable cause statement
Reasonable cause generally means you exercised ordinary care but could not comply due to circumstances outside your control. Focus on dates, actions you took, who you spoke with, and the documents you relied on. Show that you corrected the problem quickly once you learned about it. The regulation allows the IRS to waive the penalty when the facts support reasonable cause.
Here is a simple structure you can adapt:
Reasonable cause summary
- On [date], I submitted a [passport or LPR] application.
- At that time, I [did not have a TIN / listed an incorrect TIN] because [specific reason].
- Between [date] and [date], I took these steps: [SSA appointment, W‑7 filing, correction request, calls, emails, receipts].
- I obtained or corrected my TIN on [date].
- I am attaching [list of documents] to support these facts.
- As soon as I received your notice dated [date], I completed Form 13997 and corrected the record.
Keep it factual and brief. One page is usually enough, with attachments for proof.
Fill the form accurately
- Enter the correct SSN or other TIN if you have one. If you do not have a TIN, state that clearly and explain why in the space provided.
- Paste or type your reasonable cause statement, or attach a separate page if needed.
- Sign and date the attestation. The signature is required.
How to submit the form
- Follow Letter 4318. It controls the address, any fax number, and the due date. The form itself warns you not to mail it to a generic address.
- Plan for paper or fax. The official supporting statement confirms Form 13997 is not filed electronically because a signature is required.
- Keep proof. Use certified mail with return receipt, a reputable courier with tracking, or a fax confirmation sheet.
Common mistakes that slow things down
- Missing signature or date on the attestation.
- Names that do not match the passport or USCIS application records.
- A reasonable cause story with no dates or proof.
- Mailing to the wrong address instead of the address on Letter 4318.
One‑page reference
| Item | What the IRS expects | Where this comes from |
| TIN status | Provide a valid SSN or other TIN if issued, or explain why none exists | Form 13997 fields 1–2; §6039E requirements |
| Reasonable cause | Facts showing the failure was not willful and you acted promptly | 26 CFR §301.6039E‑1(c); IRS notice timeline |
| Signature | Signed attestation under penalties of perjury | Form 13997 attestation |
| Deadline | Generally 60 days to respond, 90 days if addressed outside the U.S. | 26 CFR §301.6039E‑1(c) |
| Where to send | Exactly as directed by Letter 4318 | Form 13997 footer and OMB supporting statement |
| Privacy | Return information is confidential under §6103 | Form 13997 Privacy Act/PRA notice |
Sources for the points above are the official form, the regulation, and the OMB supporting statement.
After you send it, what to expect
The IRS will review what you submitted, verify any TIN you provided, and decide whether to assert or waive the §6039E penalty based on your explanation and supporting documents. That review process is described in the agency’s supporting materials for this form. Keep your proof of mailing or fax transmission until you have written confirmation or the matter is otherwise resolved.
If you missed the deadline
Act now. Complete Form 13997, attach your reasonable cause statement, and send it per Letter 4318. The regulation allows the IRS to consider all surrounding circumstances when deciding whether a penalty should apply, and late but complete responses can still help you avoid or reverse an assessment.
Special cases you might see
- No TIN yet. Explain why, show proof of your SSA or ITIN application, and include any appointment or receipt numbers. Then supplement once you receive the number. The form specifically accommodates this scenario.
- Name changes. Attach court orders or other records so your names align with your passport or USCIS file.
- Outside the U.S. The response window is generally 90 days when the IRS’s notice is addressed to an applicant outside the United States.
FAQs
What is IRS Letter 4318?
Letter 4318 is the IRS’s notice that explains your potential §6039E issue, the possible $500 penalty, and how to resolve it by completing and returning Form 13997. It also sets your due date and where to send the response.
Can I upload or email Form 13997?
No. The current supporting statement says Form 13997 is not filed electronically because it requires a signature. Follow the return instructions in your letter, usually mail or fax.
What counts as “reasonable cause” for §6039E?
Facts showing you used ordinary care and tried to comply, but circumstances outside your control prevented it. Provide dates, steps you took, who you contacted, and proof. The regulation allows the IRS to waive the penalty when reasonable cause exists.
Is Form 13997 connected to passport revocation for tax debt?
No. That is a separate program for seriously delinquent tax debt and uses different notices, for example CP508C/CP508R. It does not resolve a §6039E TIN information issue.
How long does it take to complete?
The form’s Paperwork Reduction Act notice estimates about an hour on average, including gathering records, learning what is required, preparing the form, and copying and sending it. Your time may vary.
For CPA and EA firms, make this repeatable
If your team handles Letter 4318 cases for clients, build a short, disciplined workflow:
- Intake checklist tied to §6039E and the 60 or 90 day clock.
- Standard reasonable cause templates with date prompts and evidence slots.
- Proof of mailing or fax procedures.
- A one‑page reviewer guide to keep names, addresses, and TINs consistent with passport or USCIS records.
If you want to shift preparation time off your in‑house staff during peak season, Accountably can fold this workflow into a controlled offshore delivery model, including SOPs, standardized workpapers, and review protection, without giving up quality or security. Use it when you need capacity and predictable turnaround, not resumes. Use your judgment on when that adds value for your firm.
Wrap‑up and next steps
- Read your Letter 4318 and calendar the due date.
- Download and complete Form 13997, attach your reasonable cause statement, sign, and send it exactly as directed in the letter. Keep proof.
- If you are late, still respond with a full, well‑documented explanation. The regulation allows the IRS to consider reasonable cause.