---
title: What is a LTR12C Notice?
description: Learn what an IRS LTR12C Notice is, why you might receive it, and how to respond effectively to ensure your tax compliance.
---

[The Learning Center | DiMercurio Advisors ](https://www.dimercurioadvisors.com/learning-center)

# [What is a LTR12C Notice?](https://www.dimercurioadvisors.com/learning-center/tax-notice-library/ltr12c)

 Written by [Nate Richards EA](https://www.dimercurioadvisors.com/learning-center/author/nate-richards) | Dec 27, 2024

Receiving a tax notice or letter is never a pleasant experience. It can be confusing and frustrating if you don't understand why you received the notice in the first place.  That's why we wrote [The Ultimate Guide to Tax Notices](https://www.dimercurioadvisors.com/the-ultimate-guide-to-tax-notices) and created a [tax notice library](https://www.dimercurioadvisors.com/learning-center/tax-notice-library) filled with the most common tax notices and letters you might receive.  We believe the process of staying compliant with your taxes should be as effortless as possible.

### General Information

- **What is the notice number?**  LTR12C
- **What government agency sends this notice? ** The Internal Revenue Service (IRS)
- **What is this notice about? ** The IRS needs more information to process your individual income tax return.
- **What should you do if you receive this notice?** 
    - Read your letter carefully and respond timely. 
          - Respond to the letter, even if you disagree with the information in it.
          - Send the IRS a letter explaining what information you think is in error.
          - Send the information requested in the letter.
    - Do not file a [Form 1040-X, Amended U.S. Individual Income Tax Return](https://www.dimercurioadvisors.com/learning-center/tax-form-library/1040x). When the IRS receives the requested information, they’ll use it to process your original tax return.
    - If you’re due a refund, the IRS will send it about 6-8 weeks after they receive your response.

### FAQs & Additional Information

- **How do I respond to this letter?  
  ** 
    - Fax your information to the fax number in the letter using either a fax machine or an online fax service. Protect yourself when sending digital data by understanding the fax service’s privacy and security policies.
    - You can also mail your information to the address shown at the top of the letter.
    - Include a copy of the letter with your response.

### What does it look like?

### Resources

Looking for more information about this notice?  Here are some helpful resources:

- About the notice - [https://www.irs.gov/individuals/understanding-your-letter-12c](https://www.irs.gov/individuals/understanding-your-letter-12c)

### How can we help you today?

Are you looking for more information about your tax notice or other challenges?  DiMercurio Advisors has a dedicated team supporting tax notices, audits and more.  We are passionate about ensuring you are well-informed and in control of your tax situation.

 

[View full post](https://www.dimercurioadvisors.com/learning-center/tax-notice-library/ltr12c)

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