Trace the same LLC through four records
The four search locations below come from the IRS’s Lost or forgot EIN guidance. The order, document notes and stop points are our preparation aid. Search your own records or use the organization’s authorized access process; this page cannot retrieve an EIN.
Original IRS notice
Look for the notice issued when the EIN was assigned. Check the LLC’s private document archive and any application handoff you already hold.
Record: document title, date and private location. A draft SS-4 or a fax transmission receipt alone is not an IRS assignment notice.
Existing business bank
Contact the bank that holds this LLC’s business account. Follow its identity and access process; do not assume a service provider can disclose account information to anyone who asks.
Record: bank contacted, request date and whether an account record for this LLC was located.
State or local agencies
Check agencies where the LLC applied for state or local licenses. If no such application was made, mark that source not applicable instead of treating it as a failed EIN search.
Record: agency, application reference and response. A state registration number is a different identifier.
Past business tax returns
Review returns already held for the LLC, or arrange authorized access with the person who keeps them. Do not substitute a return belonging to its owner or another company.
Record: return type, tax period and private file reference. If there are no past returns to review, record that fact.
Choose the next step from what you found
- One number located for this LLC
- Keep its source with the LLC’s legal-name record. If you need written verification, use the CP575 and Letter 147C comparison. Finding digits in an old file and obtaining current IRS confirmation are separate tasks.
- No number located
- Keep the search marked unresolved. The IRS lists 800-829-4933 for missing-EIN assistance and says it verifies identity before providing a number to an authorized caller. Check current hours and telephone access before calling from abroad; this guide does not verify international call routing or promise disclosure.
- Two numbers or conflicting entity records
- Do not choose by document date or submit another SS-4 to settle the conflict. The IRS’s Multiple EINs or entities guidance directs the business to its Business and Specialty Tax Line to establish which EIN to use.
Prepare an inquiry without spreading sensitive data
- Keep the LLC’s exact legal name and relevant private record references together. Note any previous name or address that could explain why a file was missed.
- Identify the person making the inquiry and resolve their authority before seeking disclosure. Having formed the LLC does not by itself establish every person’s access rights.
- Write down what remains unknown: whether an EIN was assigned, which number belongs to this entity, or which written confirmation is needed.
- Use the official IRS contact instructions. Keep any identity information within the official verification process; do not put it into public notes or this blank checklist.
Fictional example: a bank file, but no assignment notice
Marina Example LLC’s owner cannot find its IRS letter. The owner locates a business-bank record referring to an EIN, but the original assignment notice is still missing.
The search record now says “number located in bank file; written IRS confirmation still needed.” The owner follows the IRS confirmation options rather than treating the missing letter as a reason for a new application. This invented example does not authenticate a real number or guarantee a bank’s acceptance.
Keep the search in one private record
Open the blank EIN search record (TXT)Save and complete it privately. It asks for document references, search status and the next question, with no field for a full EIN, SSN or ITIN. Nothing is uploaded, submitted or filed by this page.
- IRS: Employer identification number — Lost or forgot EIN: the four search locations and authorized telephone recovery.
- IRS: Multiple EINs or entities: one EIN for a business entity and the official route for conflicting numbers.
- IRS: EIN confirmation and Understanding your CP575 notice: confirmation options, eligible account access and limits on recreating the original notice.
Consulted November 2, 2026. Geography: U.S. federal EIN records. Unit: a document search and its outcome, not a count of businesses or approval rates. The checklist, record labels and fictional case are our own explanatory aids; they are not IRS forms or evidence of a recovered EIN.