Verification
EIN Verification Guide
Verify an EIN with IRS Letter 147C, CP 575 notice, W-9 form, or state filings. Banks require EIN verification for business accounts. Call IRS at 800-829-4933.
Methods
How to Verify an EIN
Your Own EIN
| Method | Timeline | |--------|----------| | CP 575 notice | Instant (if you have it) | | Letter 147C | 24-48 hrs (fax) / 10 days (mail) | | Tax returns | Instant | | Bank records | Instant |
Another Company's EIN
| Method | Reliability | |--------|-------------| | W-9 form request | High | | State SOS records | Medium | | IRS nonprofit search | High | | SEC EDGAR | High |
147C vs CP 575
Letter 147C vs CP 575
| | CP 575 | Letter 147C | |-|--------|-------------| | What | Original EIN notice | Verification letter | | When | At EIN issuance | Upon request | | How to get | Automatic | Call 800-829-4933 | | Delivery | Mail | Fax (24-48 hrs) or mail | | Banks accept? | Yes | Yes | | Replacement? | Cannot re-issue | Unlimited |
Frequently Asked Questions
How do I verify an EIN?
Request Letter 147C by calling 800-829-4933, check your CP 575, or cross-reference with state records.
What is Letter 147C?
An EIN verification letter from the IRS. Confirms EIN, entity name, and address. Faxed in 24-48 hours upon request.
What is CP 575?
The original EIN assignment notice mailed when your EIN is first issued. Your primary EIN confirmation document.
Do banks verify EINs?
Yes. Banks verify EINs during account opening. They may accept 147C, CP 575, or your latest tax return.
How long does verification take?
Phone: 10-30 min. Letter 147C by fax: 24-48 hours. By mail: 10 business days.
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