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What Is a CP-575 Form?

January 20, 2025

By Karen Stoychoff Inman

Small business owners celebrate receiving their CP-575 letter from the IRS.
IRS Form CP-575 stands out among the collection of important documents a small business owner requests, receives, completes, and files.

This essential piece in the tax compliance puzzle helps ensure business startup and ongoing operations run smoothly.  

Read on to learn more about the IRS Form CP-575 letter, why it’s important, steps to obtain one, and how to retrieve it if lost.

What is a CP 575 Used For?

The Internal Revenue Service (IRS) issues a CP 575 form, commonly called the CP-575 letter or the EIN Verification Letter, to confirm your business has been granted an Employer Identification Number (EIN).  

CP-575 is one of many official notices issued by the IRS.

Before receiving an IRS notice letter CP 575, a small business owner must first apply for an EIN with Form SS-4.

What is an EIN?

An EIN, sometimes referred to as a Federal Identification Number (FEIN), is used by the IRS to identify a business entity, including:

  • Business name
  • Business official filing address

This nine-digit number helps a business operate legally in the United States.  

Any U.S. business with employees needs an EIN. A business also needs an EIN to open a business bank account, hire workers, and obtain loans. You must also file taxes and obtain business licenses and permits. Getting an EIN through the IRS is easy and free.

Why the IRS CP 575 Form Is Important

The CP-575 IRS form serves as official documentation that your business has been assigned an EIN.  

You’ll receive the official paper notifications from the IRS within two months of applying for your EIN. Be sure to call 800-829-4933 if you don’t receive your IRS EIN letter more than 10 weeks after filing your SS-4.


This documentation plays a pivotal role in various aspects of business operations, including:

  • Tax Filing. The EIN obtained through the CP 575 form is required for filing federal tax returns and other tax-related documents. It ensures that your business is compliant with IRS regulations and helps you avoid penalties.
  • Banking and Financial Transactions. Most banks require an EIN to open a business account. The CP 575 form serves as proof of your EIN, facilitating smooth interactions and transactions with financial institutions.
  • Employment. When hiring employees, your EIN is used to report payroll taxes to the IRS. The CP 575 form ensures you have the correct EIN for these transactions, maintaining compliance with employment laws.


Best Practices for Managing Your EIN

Once you have your EIN Verification Letter, ensure you store it securely. Consider keeping both digital and physical copies.


Effective management of your EIN and related documents is crucial for smooth business operations. Here are some best practices.

  • Organize Your Documents. Keep all important documents, including the CP-575 form and EIN Verification Letter, in a well-organized and secure location. A dedicated folder, both physical and digital, can help prevent loss or misplacement.
  • Regularly Update Your Information. If your business details change, such as your address or business name, update the IRS promptly to ensure all records remain accurate. Use Form 8822-B to report changes to Form SS-4. This minimizes the risk of miscommunication and ensures you receive all correspondence.
  • Use Your EIN Correctly. Always use your EIN for business-related activities. Avoid using your EIN for personal transactions.  


How to Retrieve a Lost CP-575 Form

Losing your CP-575 letter can be frustrating, but there are steps you can take to retrieve your EIN information.  

  • Check Previous Records. Check previous records or IRS correspondence, including tax returns, bank statements, or other official documents.
  • Contact the IRS. If you cannot locate your EIN, contact the IRS Business & Specialty Tax Line at 800-829-4933. Be prepared to provide identifying information about your business.  
  • Request a Verification Letter. While the IRS does not reissue CP-575, you can request a verification letter as proof of your EIN. This letter serves the same purpose and can be used for business activities that require EIN verification.


Final Thoughts

The CP-575 form is more than just a piece of paper; it's a key component of your small business tax and operational framework. Understanding its importance, knowing how to retrieve it if lost, and following best practices for managing your EIN can save you time and prevent compliance issues.

Whether you're a new entrepreneur or an experienced business owner, staying informed about tax compliance requirements, such as the CP-575 form, is essential for successful business management. Prioritize these practices to ensure seamless operations and peace of mind.


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This content is for educational purposes only, is not intended to provide specific legal advice, and should not be used as a substitute for the legal advice of a qualified attorney or other professional. The information may not reflect the most current legal developments, may be changed without notice and is not guaranteed to be complete, correct, or up to date

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