If your EIN is not working, the cause is almost always one of four things: the number is too new to be recognized by IRS systems, the legal name or responsible party on your filing doesn’t match what the IRS has on record, the EIN has been deactivated, or a third party like a bank hasn’t yet received updated IRS data. Each has a specific fix, and the right one depends on where the rejection is coming from.
The EIN Was Just Issued
Applying through the IRS EIN Assistant online gives you a confirmed number within minutes, but that number often won’t work right away for electronic filings or payments.1Internal Revenue Service. Get an Employer Identification Number The IRS assigns the EIN immediately, but its internal databases update on a staggered schedule. Until the number fully propagates into the IRS Master File, electronic tax returns, payroll deposits, and e-filed forms may be rejected.
The IRS does not publish an official waiting period, but business owners commonly report that electronic filings begin working about two weeks after issuance. If you need to make a tax deposit before your EIN is fully active, the IRS instructs you to mail the payment rather than submit it electronically.2Internal Revenue Service. Instructions for Form SS-4 Hold onto the CP 575 confirmation notice you received when the number was assigned; you may need it to verify the EIN with a bank or lender while the IRS catches up.
How you applied also affects timing. The online assistant is fastest but is only available Monday through Friday from 6:00 a.m. to 1:00 a.m. Eastern, Saturday from 6:00 a.m. to 9:00 p.m. Eastern, and Sunday from 6:00 p.m. to midnight Eastern.1Internal Revenue Service. Get an Employer Identification Number By fax, the IRS returns a confirmation with your EIN in about four business days. By mail, expect around four weeks. International applicants can call 267-941-1099, Monday through Friday, 6:00 a.m. to 11:00 p.m. Eastern. The database propagation delay applies on top of each method’s processing time.3Internal Revenue Service. Employer Identification Number
The Name on Your Filing Doesn’t Match IRS Records
Even after your EIN is fully active, a return can be rejected if the legal name you submit doesn’t exactly match what the IRS captured from your original SS-4. The database requires a character-for-character match. Writing “LLC” on a return when the SS-4 spelled out “Limited Liability Company,” or the reverse, is enough to trigger a rejection.2Internal Revenue Service. Instructions for Form SS-4
Behind the scenes, the IRS builds a “name control” from your business name, typically the first four significant characters. Only letters, numbers, hyphens, and ampersands are valid. Periods and other special characters drop out, and the word “The” is included only when it is followed by a single word.4Internal Revenue Service. Using the Correct Name Control in E-filing Corporate Tax Returns A company called “Joe.com” produces the name control “JOEC” because the period is stripped. If your e-filed return uses a version of the business name that generates a different control, the return gets rejected.
When you receive an e-file rejection for a name-control or EIN mismatch, first confirm your EIN is entered correctly. Then compare the name on your return against the name control rules to see whether your original application produced a different control than you assume. If the EIN is right but the name control is wrong, you can refile with the “Name change” box checked, or call the IRS e-Help Desk at 866-255-0654 for help identifying the exact name on file.4Internal Revenue Service. Using the Correct Name Control in E-filing Corporate Tax Returns
Some name changes require a new EIN altogether rather than an update, such as when a sole proprietorship incorporates or a partnership restructures.5Internal Revenue Service. Business Name Change IRS Publication 1635 explains which changes fall on which side of that line.
Responsible Party or SSN Mismatch
The IRS also validates the Social Security Number or ITIN of the responsible party listed on the SS-4. If that person’s name or SSN doesn’t match Social Security Administration records, entity verification can fail entirely. Check that the responsible party’s information was entered exactly as it appears on the Social Security card.
If the responsible party has changed since the EIN was issued, file Form 8822-B within 60 days of the change.6Internal Revenue Service. About Form 8822-B, Change of Address or Responsible Party – Business Not updating this information isn’t itself a penalty, but IRS notices about tax deficiencies will go to the outdated contact, and penalties and interest continue to accrue whether or not you receive them.7Internal Revenue Service. Form 8822-B, Change of Address or Responsible Party – Business
The EIN Has Been Deactivated
An EIN is permanent. The IRS cannot cancel a number, but it can deactivate the account tied to it.8Internal Revenue Service. If You No Longer Need Your EIN If a prior owner or officer closed the business account with the IRS, filings and bank submissions under that number will fail. A deactivated EIN can’t be reassigned to a new entity, and it can’t simply be switched back on.
If you think your EIN was deactivated in error, call the IRS Business and Specialty Tax Line at 800-829-4933 to discuss the account. A business that was formally dissolved will generally need a new EIN if it resumes operations under a different legal structure.
A Bank or Third Party Says the Number Is Invalid
Banks, credit card processors, and state licensing agencies don’t query the IRS Master File in real time. They rely on periodic data feeds or secondary verification services, so an EIN the IRS already recognizes can still be rejected by a bank’s system days or weeks later. If a bank tells you the number is invalid, ask whether they can verify it manually against your CP 575 notice or a 147C verification letter from the IRS.
How to Verify Your EIN and Get Written Proof
To confirm your EIN is active and correctly recorded, call the IRS Business and Specialty Tax Line at 800-829-4933, Monday through Friday from 7:00 a.m. to 7:00 p.m. local time (Alaska and Hawaii follow Pacific time).9Internal Revenue Service. Telephone Assistance Contacts for Business Customers Choose the Employer Identification Numbers option to reach a live agent.
The agent will verify your identity before sharing account information. Have your full name, SSN or ITIN, date of birth, mailing address, and your position or title within the entity ready.10Internal Revenue Service. Assigning Employer Identification Numbers (EINs) If someone other than the responsible party is calling on the business’s behalf, the IRS needs a Form 2848 (Power of Attorney) or Form 8821 (Tax Information Authorization) on file, with a notation for the SS-4 or EIN application on Line 3.
If a bank, lender, or licensing agency wants written proof that your EIN is active, ask the agent to issue a 147C letter. It replaces the original CP 575 and contains your entity’s legal name, address, and EIN. You can receive it by fax during the call or by mail; the mailed version typically takes four to six weeks.10Internal Revenue Service. Assigning Employer Identification Numbers (EINs) Fax is the fastest way to get the documentation a third party is asking for.
Penalties for an Incorrect EIN, and When Relief Applies
Using the wrong EIN, or leaving one off entirely, on information returns like W-2s and 1099s can produce per-return penalties. For 2026, the amounts scale with how quickly you correct the error:
- Corrected within 30 days: $60 per return
- Corrected after 30 days but by August 1: $130 per return
- Corrected after August 1 or never filed: $340 per return
- Intentional disregard: $680 per return
Each affected return counts separately, so a business filing many 1099s can see the total climb quickly.11Internal Revenue Service. Information Return Penalties
If a filing was late or contained errors because of an EIN processing delay, you may qualify for relief under the reasonable cause standard. The IRS specifically lists “system issues that delayed a timely electronic filing or payment” as a valid reason.12Internal Revenue Service. Penalty Relief for Reasonable Cause When you respond to a penalty notice, include a written explanation of what happened and keep your EIN confirmation and any e-file rejection notices as supporting documentation.