After You Get Your EIN: CP 575 Form 8822-B and Keeping Info Current
EIN application flow (Form SS-4)
How a foreign-owned entity obtains its IRS Employer Identification Number.
Gather entity details
Legal name, responsible party, and structure.
Complete Form SS-4
Foreign responsible parties can generally apply without a U.S. TIN when the IRS foreign-applicant process applies.
Submit to the IRS
Fax or mail — international applicants can also call.
Receive the EIN
Use it to open banking and file federal returns.
Key Takeaways
- CP 575 is the one-time EIN confirmation letter — the IRS does not send replacements automatically
- If no CP 575 arrives within 60 days, mail a copy of your SS-4 marked "Second Request"
- Request a 147C verification letter by calling 1-800-829-4933 (domestic) or 267-941-1099 (international)
- Report responsible party changes within 60 days using Form 8822-B
- Use Form 8822-B for address changes as well
- Never substitute your SSN for your EIN on tax returns — they are different numbers
- Store your EIN, CP 575, and formation documents together securely
- An EIN is permanent — it stays with your entity for its entire existence
What is the CP 575 notice and why does it matter?
The CP 575 is the official EIN confirmation letter the IRS mails to you after your EIN is assigned. It is a one-time document and the IRS does not automatically send replacement copies. Keep this letter in a safe place.
The CP 575 confirms your EIN, your entity's legal name, and the address the IRS has on file. Banks and financial institutions sometimes ask for a copy of the CP 575 to verify your EIN when you open a business account.
What if you never receive your CP 575?
If you have not received your CP 575 within 60 days of receiving your EIN, mail a copy of your original Form SS-4 to the IRS with "Second Request" written clearly at the top. Include the EIN if you know it.
Alternatively, you can request a 147C letter, which is a verification letter confirming your EIN. Call 1-800-829-4933 (domestic) or 267-941-1099 (international) to request a 147C. The 147C serves the same purpose as the CP 575 for bank account verification.
How do you keep your responsible party information current?
The IRS requires you to report changes to the responsible party within 60 days using Form 8822-B (Change of Address or Responsible Party — Business). This is important because the IRS uses the responsible party to verify your identity when you call about your account.
If the person who controls your entity changes (for example, if you transfer ownership of your single-member LLC), file Form 8822-B immediately. Failure to update this information within 60 days can create complications with future IRS interactions.
How do you update your business address with the IRS?
Use Form 8822-B to report address changes. This is the same form used for responsible party changes. You can report both a mailing address change and a location address change on the same form.
Make sure to update your address before your next tax return is due. If you file a return with a new address, the IRS may automatically update some records, but it is better to file Form 8822-B proactively to avoid missed correspondence.
What common mistakes should you avoid after getting your EIN?
Never substitute your SSN for your EIN (or vice versa) on tax returns. These are different numbers for different purposes. Using the wrong number will cause processing delays and potential mismatches in IRS records.
Also, do not assume your EIN assignment means your entity is properly set up for all tax purposes. If you need to make a tax classification election (Form 8832), file for a FEIN determination, or register for state taxes, those are separate steps that must be completed independently.
Where should you store your EIN and related documents?
Keep your EIN, CP 575 letter, Form SS-4 copy, and Articles of Organization together in a secure digital and physical file. You will need to reference these documents when filing tax returns, opening bank accounts, applying for business licenses, and interacting with the IRS.
Consider keeping a digital scan of all these documents in a secure cloud storage location as a backup. Your EIN is a permanent number that stays with your entity for its entire existence, so treat it with the same care as you would a Social Security Number.
Frequently Asked Questions
How do I get a copy of my CP 575 if I lost it?
The IRS does not reissue CP 575 letters. Instead, request a 147C verification letter by calling 1-800-829-4933 (domestic) or 267-941-1099 (international). The 147C serves as proof of your EIN.
Do I need to renew my EIN periodically?
No. An EIN is permanent and does not expire. Once assigned, it stays with your entity for its entire existence. You do not need to renew or reapply.
What is the deadline to report a responsible party change?
You must file Form 8822-B within 60 days of the change. This applies when the individual who controls the entity changes, such as when ownership is transferred.
Can I use the 147C letter instead of the CP 575 for bank account verification?
Yes. The 147C verification letter is accepted by banks and financial institutions as proof of your EIN, just like the CP 575.
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