The EIN is your LLC’s federal tax identification number. Banks will not open an account without it, payment processors will not onboard without it, and the IRS will not accept your annual filings without it. You do not need a Social Security number, an ITIN, or a US address to get one.

What you do need is patience with paperwork, because the path open to you runs through Form SS-4 — and, in the fastest case, a fax machine. The IRS’s relationship with the present decade is its own affair; yours is to work the process, which is entirely workable.

Why the online tool is closed to you

The IRS online EIN assistant issues numbers in minutes, and every guide written for Americans points there. It will not work for you, for two independent reasons stated in the IRS’s own conditions: the responsible party must have an SSN or ITIN, and the entity’s principal place of business must be in the US or its territories. Per the Form SS-4 instructions (Rev. December 2025), an applicant with no legal residence, principal place of business, or principal office or agency in any state or DC cannot use the online application.

You have neither qualification. This is not a defect in your filing; it is the design of the tool. Skip it and go straight to the paper paths.

The three paths

All three start with the same completed Form SS-4. The current form and its instructions live at irs.gov — always work from the current revision.

Fax — about 4 business days

The fast path. Fax the completed SS-4 to the IRS’s international Fax-TIN number, and — per the SS-4 instructions — you can receive your EIN by fax generally within 4 business days. Two conditions:

  • You must provide a fax number where the IRS can send the EIN back. You do not need to own a fax machine; e-fax services that give you a receiving number work fine.
  • Fax-TIN operates around the clock, so you can send whenever your time zone allows.

The IRS warns in the instructions themselves that Fax-TIN numbers may change without notice. Do not copy a fax number from a blog post, including this one if we had printed one — pull it fresh from the current Form SS-4 instructions at irs.gov before you send.

Mail — about 4 to 5 weeks

The slow path. The SS-4 instructions tell mail filers to complete the form at least 4 to 5 weeks before the EIN is needed, with the number arriving by mail in approximately 4 weeks. International applicants mail to the IRS’s EIN International Operation in Cincinnati — again, confirm the exact current address in the Form SS-4 instructions rather than trusting a copy that may have aged.

Mail works when nothing is waiting on the EIN. If a bank application or a filing deadline is waiting, fax.

Phone — the international line

The IRS operates a dedicated international EIN line, open 6:00 a.m. to 11:00 p.m. US Eastern time, Monday through Friday. It is not a toll-free number, and you will be calling US business hours from your own time zone. The current number is in the Form SS-4 instructions at irs.gov, same place as the fax details. Have the completed SS-4 in front of you when you call; the agent works through it with you.

Filling the SS-4 as a foreign owner

Most of the form is self-explanatory. The lines that stop foreign founders:

  • Line 7b (responsible party’s SSN, ITIN, or EIN). You do not have one, and the instructions account for that: write “Foreign” on the line. Do not leave it blank, and do not invent a number.
  • The responsible party must be a human being. Even when your existing non-US company owns the LLC, the responsible party on the SS-4 is a person, not the parent company.

The ITIN detour you do not need

A whole cottage industry exists to sell foreign founders an ITIN “for the EIN.” An ITIN is not required to get an EIN, and it is not required to own an LLC. The paper paths above exist precisely for applicants with no US taxpayer identification number of any kind.

“You need an ITIN if you have a federal tax purpose and you’re not eligible for an SSN.” — IRS ITIN page

A federal tax purpose usually means a US tax return you are legally required to file. When that day comes, the ITIN application (Form W-7) goes in with the return itself — the IRS says not to file it separately — and processing runs about 7 weeks, stretching to 9 to 11 weeks in tax season or from overseas. IRS-approved acceptance agents operate abroad in many countries and can certify your documents so your passport does not travel without you. Decide the ITIN question with your tax adviser at filing season, not at formation. Whether you will owe US tax at all is a question about your facts and your country’s rules — adviser territory, not registry territory.

Two rules and one non-product

There is no expedited EIN. No one has a priority lane at the IRS. Anyone selling “expedited EIN processing” is reselling the same fax path described above, which you can work yourself in one sitting. Paying a service to prepare and fax the SS-4 for you is a convenience; paying for speed is paying for nothing.

One EIN per responsible party per day. The IRS limits issuance to one EIN per responsible party per day. Forming several companies? Space the applications out.

Work from the current instructions. Said three times now because it fails quietly: fax numbers and mailing addresses change without notice, and a fax to a dead number is not an application. The Form SS-4 instructions at irs.gov are the only address book that counts.

Next steps

The EIN is step four of five. If you have not settled the earlier steps — state, registered agent, articles — the requirements wizard resolves the full sequence for your residency and ownership situation, including which EIN path applies to you. For every cost in the chain, state fees through renewals, see Schedule A — the True Cost Worksheet.

This is an independent registry publication, not a law firm, not a tax practice, and not a government agency. Process facts above trace to the IRS Form SS-4 instructions and the IRS ITIN pages, named in plain text; your tax outcomes belong with a licensed adviser.