Getting an EIN as a non-resident is more frustrating than it should be. The IRS online EIN application is closed to anyone without a Social Security Number, which means non-residents are pushed into a fax-or-mail process that ranges from 3 weeks (well-prepared) to 12 weeks (one form field wrong). This guide walks through exactly what the IRS needs on Form SS-4, where applications get stuck, and how a Certified Acceptance Agent collapses the timeline.
Who Needs an EIN
You need an EIN if any of the following are true for your U.S. business:
- It is an LLC, corporation, partnership, or any other multi-owner entity
- It will open a U.S. business bank account
- It will hire U.S. employees or contractors
- It will file any U.S. business tax return (Form 1120, 1065, 1120-S, 5472, 941, etc.)
- It is a foreign-owned single-member LLC — yes, even disregarded entities — because Form 5472 reporting requires an EIN
For non-residents forming a U.S. LLC, the EIN is the second filing after the LLC itself. Without it, banking, payment processing, and most contract counterparties will not engage with the entity.
Why the Online Application Does Not Work for You
The IRS online EIN application requires the "responsible party" to enter a valid SSN or ITIN to authenticate the request. If you do not have one, the system blocks you at that step. There is no workaround inside the online system.
The IRS publishes two alternative paths for applicants without an SSN: fax and mail. Phone application is available for international applicants in some cases, but the IRS no longer encourages it and the wait times are long.
What You'll Need Before Applying
Gather these documents before touching Form SS-4:
- The legal name of the entity exactly as it appears on the formation documents (Articles of Organization for an LLC). The IRS will check.
- The entity's formation state and date. The state's filing acknowledgment letter shows both.
- A U.S. mailing address — not strictly required, but heavily recommended. The IRS will mail your EIN confirmation letter (Form CP-575) to this address, and that letter is what banks ask for during account opening.
- A phone number where the IRS can reach you if there are questions. This does not have to be a U.S. number, but the IRS sometimes prefers one.
- The responsible party's full legal name and foreign tax ID (if applicable). The "responsible party" is the individual who controls or owns the entity.
- The reason for applying — typically "Started a new business" for an LLC, but other options apply depending on the situation.
- Business activity description — keep it specific. "E-commerce sales of consumer electronics through Amazon FBA" is better than "online business."
Filling Out Form SS-4
The SS-4 form is one page, but several fields trip up non-residents:
Line 1: Legal name of entity. Match the formation documents exactly. "itin.net LLC" is different from "ITIN Net LLC" for IRS purposes.
Line 2: Trade name. Leave blank unless the LLC operates under a DBA.
Line 4a-4b: Mailing address. Use a U.S. address if you have one. A foreign address is acceptable but slows down post-issuance mail (CP-575 takes longer to arrive).
Line 7a-7b: Responsible party. This is the human being who ultimately owns or controls the entity. Enter their legal name in 7a and write "Foreign" in 7b where the SSN/ITIN goes. Do not invent a TIN. Writing "Foreign" tells the IRS you are an SS-4 applicant without a U.S. taxpayer ID.
Line 8a: Is this an LLC? Yes (assuming you are forming an LLC).
Line 9a: Type of entity. Single-member LLC: check "Other" and write "Disregarded entity" or "Sole proprietor" depending on classification. Multi-member LLC defaults to partnership.
Line 10: Reason for applying. "Started a new business" for most LLC formations.
Line 11: Date business started. Match the LLC formation date.
Line 12: Closing month of accounting year. December for almost all U.S. LLCs.
Line 13-17: Employee and activity questions. Be conservative — overstating employees triggers the IRS to expect payroll filings (Form 941) you may not need to file.
Line 18: Has the entity previously applied for an EIN? No, unless it has.
Submitting the Application
By fax. The IRS publishes an international fax number for SS-4 submissions. Faxed applications typically result in an EIN within 4 business days of receipt — significantly faster than mail. The IRS faxes the EIN back to the number you provide on the form, then mails the CP-575 to the address on file.
By mail. Mail Form SS-4 to the IRS address published for international applicants. Processing is 4 to 5 weeks. The CP-575 is mailed back to you.
By phone. The IRS international EIN line accepts applications from authorized parties. The form is verified verbally, then the EIN is issued at the end of the call. Hold times can be very long.
Whatever method you use, hold onto the CP-575 letter. It is the only IRS document that proves the EIN was actually issued to your entity. Replacement is possible (Form 147c) but adds weeks.
Where Applications Get Stuck
Common reasons non-resident SS-4 applications are delayed or rejected:
- Entity name does not match state filing. The IRS does basic verification against the Secretary of State's records. A typo or a different word order will bounce the application.
- No formation date on the form, or date precedes the actual filing. The IRS will not issue an EIN for an entity that does not exist yet.
- Foreign address that the IRS cannot parse. International address formats sometimes don't fit the IRS's templates. Use a U.S. address whenever possible.
- Multiple applications submitted for the same entity. If your fax did not go through the first time, do not re-fax. The IRS treats duplicates as a flag and slows everything down. Wait, then call to check status.
- Responsible party with no documented identity. The IRS may follow up requesting passport details if the application looks unusual.
What Happens After You Get the EIN
The EIN is active from the moment it is issued, even before the CP-575 arrives by mail. You can use it to open a business bank account, sign contracts, and register with payment processors. Banks will eventually ask to see the CP-575 — that is the proof-of-issuance document.
After issuance, the IRS expects to see the EIN on at least one filing per year for the entity to remain in good standing. For foreign-owned single-member LLCs, that filing is the Form 5472 plus pro forma Form 1120, due April 15 each year. Skipping it triggers the $25,000 starting penalty.
When to Use a Certified Acceptance Agent
A CAA cannot bypass the IRS — there is no shortcut to a number that does not yet exist. What a CAA does is:
- Prepare the SS-4 correctly the first time, eliminating the most common delays
- File via the IRS's CAA-dedicated channels, which move faster than the public fax line
- Track the application and call the IRS on your behalf if there are questions
- Coordinate the EIN application with the LLC formation, ITIN, and bank account opening so the documents are correct across all four filings
For non-residents who only need an EIN and have the time to navigate the IRS directly, the DIY path works. For founders who are forming an LLC, applying for an EIN, and opening a U.S. bank account in the same week, bundling the work with itin.net removes the back-and-forth that turns 4 weeks of compounding waits into 7 to 10 days end-to-end.
