EIN reference number 101 is widely reported to mean the IRS found a business name that conflicts with an existing entity. If you are a non-US resident with no US office and no SSN or ITIN, the online EIN tool was never open to you, so retrying it will not help. You apply on Form SS-4 by fax, mail, or the international phone line, with foreign on line 7b. The EIN itself is free from the IRS.
The IRS online EIN Assistant needs a US principal place of business and the responsible party's SSN or ITIN. Without both, no reference number even applies to you.
File by fax, mail, or the international phone line, and enter foreign on line 7b. You do not need an ITIN first.
The IRS does not publish a plain-language list of reference numbers 101 to 115, so treat every meaning as widely reported, not official.
What reference number 101 actually is, and what the IRS does not say
The reference numbers come from the IRS online application system, the Modernized Internet EIN tool. The Internal Revenue Manual points to an internal error-code list for that tool at section 21.7.13.3.4.1, but the IRS does not publish those code meanings for applicants. So every plain-language definition you read, including this one, is interpretation rather than an IRS-stated fact.
Reference number 101 is widely reported to mean the IRS found a business name that is the same as, or too similar to, an existing entity. The IRS checks names across the whole country, so a name that is unique in Wyoming can still collide with a company in another state. A 101 does not undo your state LLC formation. It is a name-database review, not a rejection of your company.
Why 101 is usually a non-event for a non-resident founder
Here is the part most guides skip. The IRS online EIN Assistant is only open when your principal place of business is in the US or a US territory, and when the responsible party already has an SSN or ITIN. Those are the tool's own stated requirements.
A non-resident whose responsible party has no US tax ID does not meet either condition. The online tool is closed to you before any reference number appears, so re-attempting online cannot succeed. The fix is not a better retry. It is the paper Form SS-4 process below.
Reference numbers 101 to 115, explained
The table gives the meaning each code is widely reported to carry, plus the verifiable IRS rule behind it and what to do. Read the reported meanings as practitioner interpretation, because the IRS does not publish them.
Reference number | Widely reported to mean | What it points to and what to do |
|---|---|---|
101 | A business name conflict with an existing entity | The IRS name check is nationwide. File Form SS-4 for manual review; a 101 does not undo your state filing. |
102 | A responsible-party name and SSN or ITIN mismatch | A foreign responsible party has no US tax ID to validate online. Use the paper SS-4 and enter foreign on line 7b. If you are online-eligible, recheck the responsible party name against the tax ID. |
103 | An entity named as responsible party already has an EIN | The responsible party must be a person, not a company. Name the human owner. |
104 | A third-party designee address or phone conflicts with the LLC | Use distinct designee contact details. A designee is optional, not required. |
105 | Too many attempts with the same identifiers | Stop retrying and switch to fax or mail, which the tool cannot lock. |
106, 107 | Single-member or sole-proprietor EIN edge cases | Mostly US-employer scenarios that rarely fit a non-resident owner. Included for completeness. |
109, 110, 112, 113 | Transient online system or technical errors | These are tool problems, not rejections. If you are online-eligible, try again later. For a non-resident, the durable fix is a paper SS-4. |
114 | You already reached the daily EIN limit | The IRS issues one EIN per responsible party per day. Wait until the next business day. |
115 | The responsible party shows a date of death in IRS records | A records mismatch on the responsible party. Confirm the details and file on paper for review. |
Who the responsible party must be
The responsible party is the person who ultimately owns or controls the company. The IRS is explicit: "Your responsible party must be a person, not an entity. The only exception is for government entities." A Form SS-4 that names a company as the responsible party will not go through, and nominees cannot apply.
For a foreign-owned single-member Wyoming LLC, the responsible party is you, the human owner. It is not your registered agent and not a formation company. Naming an agent or entity here is a common reason an application is bounced for review.
One EIN per responsible party per day
The IRS limits issuance to one EIN per responsible party per day. The Form SS-4 instructions state this limit applies to every method, whether online, telephone, fax, or mail. Switching channels does not reset it, so if you or a service already pulled an EIN under your details today, wait until the next business day.
How to actually get your EIN
This is the real resolution for a non-resident, and it is a paper process from the start. Complete Form SS-4. If the responsible party has no SSN or ITIN and cannot get one, enter foreign or N/A on line 7b. A foreign responsible party is not required to obtain an ITIN before getting an EIN. Our guide on getting an EIN without an SSN walks the same path in more detail.
Applicants with no US office use the international channels:
Fax the SS-4 to 855-215-1627 from within the US, or 304-707-9471 from outside the US. Give a return fax number so the IRS can fax the EIN back.
Mail the SS-4 to Internal Revenue Service, Attn: EIN International Operation, Cincinnati, OH 45999.
Or call the international applicants line, 267-941-1099, which is not toll free, from 6:00 a.m. to 11:00 p.m. Eastern time, Monday through Friday. This phone option is for international applicants only.
The IRS gives general timeframes of roughly four business days by fax and about four weeks by mail. Treat these as the IRS's current figures rather than a promised date, and confirm the numbers and hours on the live SS-4 instructions before you file.
Why a valid EIN matters for you
Getting the EIN right is not busywork. A foreign-owned US single-member LLC is a disregarded entity that the IRS treats as a reporting corporation. It must file Form 5472 attached to a pro forma Form 1120, and it needs an EIN to do so. Our Form 1120 filing guide covers that return.
Frequently asked questions
Where does the IRS officially define reference number 101?
It does not publish one. The top government result for this term is the Internal Revenue Manual, which governs how IRS employees assign EINs and points to an internal error-code table that is not reproduced publicly. Third-party lists interpret the online tool's messages, so treat any 101 to 115 meaning as reported interpretation.
Can I get an EIN without an SSN or ITIN?
Yes. Enter foreign on line 7b of Form SS-4 and file by fax, mail, or the international phone line. A foreign responsible party does not need to obtain an ITIN first to receive an EIN.
Should I keep retrying the online application?
No, if the online tool is not open to you. For applicants without a US office and a US tax ID it will not issue an EIN no matter how many times you try. Use the paper SS-4 process instead.
Do I have to pay the IRS for an EIN?
No. The IRS issues the EIN free and warns against sites that charge for the number itself. Any fee you see is for a preparation or filing service, not for the EIN.
How do I fix EIN error 101?
If you are a non-resident with no US office and no SSN or ITIN, you do not fix it in the online tool, because that tool was never open to you. File Form SS-4 on paper instead. Enter foreign on line 7b, then fax, mail, or phone it through the international channels above. If you are eligible for the online tool, a 101 usually points to a business-name conflict, which you resolve by filing Form SS-4 for manual review.
How this article was prepared
The application rules, channels, and figures are drawn from the IRS Instructions for Form SS-4, the IRS Apply for an EIN pages, the IRS responsible parties and nominees page, and Internal Revenue Manual 21.7.13. The reporting-corporation stakes are drawn from the IRS Instructions for Form 5472. The meanings of reference numbers 101 to 115 are not published by the IRS and are described here as widely reported interpretation. Last reviewed July 2026. This is general information and not legal or tax advice, and CORPBOLT is a formation service, not a law or accounting firm. Treat IRS phone numbers, fax numbers, addresses, and timeframes as the agency's current figures, so verify them on the live IRS pages before you rely on them.
A quick note on CORPBOLT: CORPBOLT forms and maintains Wyoming LLCs for non-residents from $349/year (Foundation), including the registered agent and US business address. The EIN is included from $599/year (Launch) or as a $199 add-on, prepared and filed for you on paper when the online tool is closed to non-residents. Start your US LLC.
Official references
IRS: Instructions for Form SS-4 (application channels, line 7b, international fax and phone)
IRS: Apply for an Employer Identification Number (EIN) online (eligibility and free-EIN notice)
IRS: Get an Employer Identification Number (apply by phone, fax, or mail from outside the US)
IRS: Internal Revenue Manual 21.7.13 (Assigning Employer Identification Numbers)
IRS: Instructions for Form 5472 (foreign-owned US disregarded entity)
