How to Get an EIN Without an SSN in 2026: Form SS-4 by Fax, Step by Step for Non-Residents

Every non-resident founder hits the same wall within 72 hours of forming a US LLC or C-Corp: the EIN application. The IRS online tool asks for an SSN or ITIN on the very first screen, and non-residents who have neither get stuck. The answer is not "give up and use Stripe Atlas" — it is to file Form SS-4 by fax to the IRS international desk, which has been the canonical non-resident path for decades and still works cleanly in 2026.

Key Takeaways Online EIN requires SSN or ITIN. Non-residents without either cannot use the IRS online portal. Period. SS-4 fax is the real path. ~4 business days response from the international desk when the form is filed correctly. Line 7b: write "Foreign." Leaving it blank is the #1 rejection reason for non-resident SS-4s. You do not need an ITIN first. Most non-resident founders never need an ITIN — the LLC gets an EIN, the owner does not need a personal US tax ID unless personal US income is involved.

Why the online EIN tool doesn't work for non-residents

The IRS online EIN application (available at irs.gov) requires the "responsible party" to provide either:

• A Social Security Number (SSN)
• An Individual Taxpayer Identification Number (ITIN)
• An existing EIN for another entity the person owns

Non-resident founders who have never worked or filed taxes in the US have none of the three. The online tool simply will not allow the application to proceed. This is not a bug — it is a deliberate IRS policy to identify responsible parties electronically.

The workaround the IRS itself documents is Form SS-4 filed by fax (or mail, if you have a month to wait). Everything else that non-resident founders see online — "instant EIN in 15 minutes for non-residents!" — is either a third-party designee service filing on their behalf using a US tax ID, or marketing that misrepresents what is actually happening.

The SS-4 fields that trip non-residents

Form SS-4 is a one-page form with 18 lines. Five of them matter for a non-resident applicant; most services get at least one wrong:

Line 1 — Legal name of entity. Must exactly match the formation document (Articles of Organization for an LLC, Certificate of Incorporation for a C-Corp). Trailing punctuation counts: "Acme LLC" is not the same as "Acme, LLC" for IRS matching purposes.

Line 3 — Executor, administrator, trustee, care-of name. Leave blank for most LLCs and C-Corps. Only used for estate or trust filings.

Line 4a/4b — Mailing address. Use the LLC's principal office address. Can be abroad. The registered agent address is not the correct answer here — the IRS wants the LLC's actual operating address, which for a non-resident founder is usually their home address abroad or an address they control.

Line 5a/5b — Street address (if different from mailing). Usually left blank.

Line 7a — Name of responsible party. The individual who ultimately owns or controls the entity. For a single-member non-resident LLC, that is the founder. Write the founder's legal name as on passport. This line is NOT optional — "N/A" is rejected.

Line 7b — SSN, ITIN, or EIN of responsible party. For a non-resident without any US tax ID, write "Foreign" in this field. Do not leave it blank. Do not write "N/A." Do not write "None." The literal word "Foreign" is the IRS-accepted entry.

Line 8a — Type of entity. Check the correct box: "Limited liability company (LLC)" for an LLC, "Corporation" for a C-Corp.

Line 8b — Number of LLC members. For a single-member LLC, enter "1." For multi-member, enter the count.

Line 9a — Type of entity (check appropriate box). For a single-member LLC, check "Other" and specify "Disregarded Entity." For multi-member LLC, check "Partnership." For a C-Corp, check "Corporation."

Line 10 — Reason for applying. Check "Started new business" and specify "LLC formation" or "Corporation formation."

Line 11 — Date business started. Use the date on the formation certificate issued by the Secretary of State.

Line 18 — Third party designee (optional). If a US-based accountant or agent is authorized to receive the EIN, their name and contact go here. Speeds up re-fax loops if the IRS has questions.

Sign, date, and fax.

The fax numbers that actually work in 2026

The IRS international desk fax number for SS-4 in 2026 is 855-641-6935 (for applicants outside the 50 US states and DC). A secondary line — 304-707-9471 — also routes to the international desk. Both are toll-free from within the US; non-residents will pay international fax rates.

Options if you don't have a physical fax machine:

• eFax, HelloFax, and similar services — send a PDF as a fax. Costs $10–$20 per month, or per-fax pricing for a single use.
• RingCentral or Grasshopper — business phone services with fax included.
• Google's FaxZero — free for short faxes.

Do not use an email-to-fax service that adds a cover sheet with ads. The IRS does not reject them, but the fax queue at the international desk is long, and a clean one-page SS-4 moves faster than a three-page document with ads on two pages.

What response looks like in 2026

The IRS international desk responds by fax to the same number you sent the application from. The response is an EIN confirmation letter — technically called a CP 575 notice — on IRS letterhead stating the entity's EIN, legal name, mailing address, and tax filing requirements.

Average response time in 2026: 4 business days. The range runs from 2 days (clean application, low queue) to 15 days (IRS backlogs, February-April peak). During tax season, expect the longer end.

If no response arrives within 7 business days, re-fax the same form. The IRS international desk does not send rejection notices — they simply do not respond. Second submissions rarely trigger duplicates because the desk checks by entity name before processing.

What non-residents commonly get wrong

Using a registered agent address on Line 4a. The registered agent address is the state's destination for service of process. The IRS Line 4a address is the LLC's mailing address — where IRS correspondence about the EIN itself will be sent. These are not the same. Use the LLC's actual operating address (can be abroad).

Writing "N/A" on Line 7b. The IRS international desk rejects forms with N/A in the tax ID field. Write "Foreign."

Checking the wrong box on Line 9a. A single-member LLC is a "Disregarded Entity" by default for IRS purposes. Checking "Partnership" when the LLC has one member causes the IRS to require Form 8832 to change entity classification — adding a month of back-and-forth.

Forgetting to sign the form. An unsigned SS-4 is simply not processed.

Using a messaging-app-exported PDF. SS-4s exported from messaging apps sometimes compress to illegible resolution. Send a native PDF or a 300 DPI scan.

ITIN vs EIN: why you (probably) don't need an ITIN

The ITIN (Individual Taxpayer Identification Number) is a personal US tax ID for individuals who must file US income tax returns but don't qualify for an SSN. An EIN is the entity's tax ID.

Non-resident founders often assume they need an ITIN to get an EIN. They do not. The EIN application works with the Line 7b "Foreign" entry described above.

A non-resident founder needs an ITIN only if:

• They personally earn US-source income subject to US individual tax filing
• They receive distributions from a US partnership that is required to withhold
• They need to file a personal US tax return (Form 1040-NR)

For a typical non-resident owner of a single-member US LLC with no US-source income, none of the above apply. The LLC files Form 5472 and pro-forma Form 1120 (see our company formation guide), and the owner does not file a personal US return. ITIN applications take 4–8 weeks and require certified passport copies — do not start one "just in case."

"The most common preventable delay we see for international applicants is Line 7b left blank or filled with 'N/A.' Correctly completed SS-4s with 'Foreign' in Line 7b process at roughly the same speed as domestic applications with SSN or ITIN," notes the 2026 IRS International Applicants FAQ.

Where USTAXX fits

USTAXX files SS-4 forms daily for non-resident founders forming Wyoming LLCs, Delaware LLCs, Delaware C-Corps, and Florida LLCs. The service covers:

• Drafting the SS-4 correctly on the first submission
• Faxing from a verified business line
• Monitoring the response window
• Handling the IRS international desk phone line when a fax ghosts
• Coordinating the EIN with BOI filing, operating agreement, and bank account onboarding

For founders who need the EIN to unlock a US bank account, a Stripe merchant account, a domain registration, or a merchant processor — which is most of them — the 4-business-day turnaround is usually the critical path for the rest of the setup. Our Wyoming LLC formation guide and Delaware C-Corp formation guide cover the full end-to-end setup where the EIN is step 5 of 10.

The EIN itself is not hard. Getting it right on the first fax is. Get the five fields above correct and the CP 575 lands in your inbox in under a week.

If you are setting up a US entity from abroad, getting your EIN is just one piece of the puzzle. You must also designate a valid point of contact, so check out our guide on choosing a Registered Agent for Non-US Residents in 2026: The Foreign Founder Playbook. For foundational strategy, explore How to Create a Company in the US in 2026: LLC vs C-Corp for Founders, Immigrants & Non-Residents, or if you are leaning towards a specific state, read our breakdown on How to Form a Wyoming LLC as a Non-Resident in 2026: Cost, Timeline & Post-Formation Compliance.

Next Steps for Non-Resident Founders

Once you secure your EIN using Form SS-4, you'll be ready for the next stages of your US business journey. Make sure your entity maintains legal compliance by setting up a Registered Agent for Non-US Residents in 2026: The Foreign Founder Playbook. With your EIN and registered agent sorted, you can finally move on to How to Open a US Business Bank Account as a Non-Resident in 2026 to start accepting global payments. If you are still weighing your jurisdiction options before applying, check out our Florida LLC Formation for Non-Residents in 2026: The Complete Playbook for one of the most business-friendly states.