EIN vs ITIN: Which Tax Number Does a Foreign LLC Owner Need?
Understand the difference between an EIN for your LLC and an ITIN for you, including the SS-4 line 7b exception and separate personal tax obligations.
An EIN identifies your business entity. An ITIN identifies an individual who needs a US federal tax identification number and is not eligible for an SSN. An overseas founder may need an EIN for an LLC and, separately, an ITIN for a personal tax purpose. Receiving one number does not issue the other. IRS taxpayer identification numbers.
For a foreign-owned US single-member LLC, start with the document or obligation asking for a number. Determine whose identity it concerns before choosing an application.
Compare the purposes
| Question | EIN | ITIN |
|---|---|---|
| Who does it identify? | The business or other applicant entity | An individual |
| What is the application? | Form SS-4 or an eligible IRS application channel | Form W-7, with the required supporting material |
| Does it replace an SSN? | No | Used for federal tax purposes by people ineligible for an SSN |
| Does an LLC’s EIN give its owner an ITIN? | No | Requires a separate eligible application |
The IRS explains that an ITIN is for federal tax purposes. It does not grant immigration status, authorize work in the US or establish eligibility for Social Security benefits. IRS ITIN guidance.
Can the LLC get an EIN before its owner has an ITIN?
The SS-4 instructions permit foreign or N/A on line 7b when the responsible party has no SSN or ITIN and is ineligible to obtain either. Both conditions matter. Having never applied for an ITIN does not establish ineligibility. SS-4 instructions for lines 7a and 7b.
Use the actual responsible party on line 7a. Do not put a provider’s personal number on the form to make an online application work. If the entity cannot use the online tool, examine the applicable fax or mail route. Our EIN without an SSN guide explains the channel limits and the conditional line 7b entry.
When should the owner consider an ITIN?
Review the owner’s personal US tax situation separately from the LLC’s application. An ITIN application requires a federal tax purpose and ineligibility for an SSN. Form W-7 generally accompanies a federal tax return, although specified exceptions exist. The supporting identity and foreign-status documentation is part of that separate process. IRS Form W-7 instructions.
For example, an owner preparing a personal US tax return may need an individual taxpayer number even though the LLC already has an EIN. Conversely, a business EIN application alone does not prove that every owner must submit W-7. Confirm the relevant filing requirement and any exception before ordering an ITIN service.
When a bank or platform asks for a tax ID
Ask whether it wants the entity’s EIN, the owner’s individual number, or both, and which supporting documents it accepts. A field labeled tax ID can refer to different people in the same onboarding process. Keep the LLC name, owner name and corresponding numbers separate in your records.
An EIN or ITIN does not guarantee account approval. The institution can request additional ownership, identity and business information. If it needs business EIN evidence, review CP575, Letter 147C and fax replies.
Common questions
Do I apply for an EIN and ITIN on the same form?
No. SS-4 and W-7 have different applicants, requirements and purposes. A service offering both should explain each application separately.
Can I use my LLC’s EIN on my personal tax return as my own number?
An entity’s EIN does not replace the individual’s required taxpayer ID. Follow the instructions for the personal return.
Does EINPilot obtain ITINs?
EINPilot’s planned scope is EIN preparation and fax assistance for eligible first-time applicants with a US single-member LLC and one foreign individual owner. ITIN applications and tax-return preparation are outside that standard scope. The product preview does not accept real applications, payments or submissions.
General information, not individualized tax advice. Sources checked October 8, 2026: IRS TIN overview, ITIN guidance, W-7 instructions, and SS-4 instructions.