You formed your US LLC. You have the Articles of Organization. You sit down to open a Mercury or Stripe Atlas account, and you get stopped at the same wall every foreign founder hits: the application needs an EIN, but the IRS online tool rejects you because you do not have a Social Security Number.
Here is the part nobody tells you clearly. You can still get an EIN. The IRS has a paper path built specifically for applicants without an SSN. It just takes longer and has more rules than the online form. This guide walks through the exact steps, the realistic timeline, and the mistakes that cause the IRS to reject or ignore your application.
Why You Need an EIN
An EIN (Employer Identification Number) is a 9-digit tax ID the IRS assigns to your business. Think of it as the business equivalent of a Social Security Number. Banks use it to open accounts. The IRS uses it for every tax filing. Stripe, PayPal, and most payment processors ask for it during onboarding. Without an EIN, your US company exists on paper but cannot actually transact. Here's what you can do after you have one:
- Open a US business bank account (Mercury, Relay, Bluevine, Chase, and all major banks)
- Sign up for Stripe, PayPal, or Wise Business
- File your annual Form 5472 + pro forma 1120 if you are a foreign-owned single-member LLC
- Hire US contractors and issue Form 1099
- Get approved on most SaaS billing, Amazon Seller, and merchant platforms
EIN is free
The IRS never charges for an EIN. Any website asking $200-500 to "get your EIN" is reselling a free government service. Formation companies may legitimately charge for handling the paperwork on your behalf, but the EIN itself costs zero dollars.
Why the Online Application Rejects You
The IRS online EIN tool at irs.gov requires the "responsible party" to enter an SSN or ITIN (Individual Taxpayer Identification Number). If you are a non-US citizen who has never lived or worked in the US, you have neither. The online form has no path around this. Entering zeros or a fake number gets your application voided and can flag your LLC for review.
This is not a bug. It is by design. The IRS built the online tool for US taxpayers. Foreign founders are expected to use the paper or fax channel instead, which has a dedicated workflow for applicants without a US tax ID.
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The Three Paths to an EIN
Depending on your tax ID, one of the following three paths applies to you. Pick the right one up front to avoid wasted weeks.
| Your situation | Application method | Typical timeline |
|---|---|---|
| You have an SSN or ITIN | IRS online tool (irs.gov) | Instant, same session |
| No SSN or ITIN, foreign founder | Fax Form SS-4 to IRS | 4 to 6 weeks |
| No SSN or ITIN, no US fax access | Mail Form SS-4 to IRS | 6 to 10 weeks |
EIN application paths based on the responsible party's tax ID.
Do not apply for an ITIN first
A common detour: applying for an ITIN so you can use the online EIN tool. The ITIN process itself takes 8 to 14 weeks and requires certified passport copies. Faxing Form SS-4 as a foreign founder is usually faster. Only pursue an ITIN if you need one for personal tax filings (Form 1040-NR).
Step by Step: Form SS-4 for Foreign Founders
Form SS-4 is a single page. Most of it is straightforward. The fields below are the ones where foreign founders most often make mistakes.
| Line | Field | What to enter |
|---|---|---|
| 1 | Legal name of entity | Exact LLC name from your Articles of Organization |
| 4a-b | Mailing address | A US street address, not a P.O. box, where the IRS can mail your EIN confirmation (CP 575 letter) |
| 7a | Responsible party name | Your legal name as it appears on your passport |
| 7b | Responsible party SSN/ITIN/EIN | Write "Foreign" if you have none. Do not leave blank. Do not enter zeros. |
| 8a | Is this application for an LLC? | Yes |
| 8b | Number of LLC members | 1 for single-member, actual count for multi-member |
| 9a | Type of entity | Check the box that matches your tax election. For a default single-member LLC, check "Other" and write "Disregarded entity - foreign-owned" |
| 10 | Reason for applying | "Started new business" is standard |
| 11 | Date business started | The date your LLC was formed (same as on your Articles of Organization) |
The Form SS-4 fields that matter most for foreign applicants.
Line 7b is the top rejection reason
Leaving line 7b blank or entering an invalid number (like 000-00-0000) is the single most common cause of rejected or delayed applications. Write the word "Foreign" in plain text. This tells the IRS to route your application through the foreign-applicant queue instead of flagging it as an error.
Sign the form on the bottom with your name and title (Member, Manager, or Owner depending on your LLC structure). The signature must be physical; typed signatures on the fax are rejected.
How to Submit: Fax vs Mail
The IRS keeps two channels open for foreign applicants. Fax is faster and more reliable, but requires access to an international fax number or an online fax service such as eFax, HelloFax, or MyFax. Here's where to send Form SS-4 as a foreign founder:
| Channel | Destination | Notes |
|---|---|---|
| Fax | +1 (855) 641-6935 | Include a US callback fax number so the IRS can return the EIN. If you do not provide one, they mail the response instead, adding 2 to 3 weeks. |
| Internal Revenue Service, Attn: EIN International Operation, Cincinnati, OH 45999 | Use a trackable carrier (FedEx, DHL). Plan for 6 to 10 weeks to get your EIN letter back. |
Where to send Form SS-4 as a foreign founder.
Fax from an online service works
You do not need a physical fax machine. Services such as eFax, HelloFax, and FaxZero all send documents to US numbers from anywhere in the world for $1-20. Save your fax confirmation sheet; if the IRS claims to have no record of your filing, this is your proof of submission.
Realistic Timeline From Submission to Usable EIN
- 1Day 0: You fax Form SS-4 to the IRS international EIN unit.
- 2Day 1 to 10: The IRS acknowledges receipt. During tax season (January to April), this stretches to 2 to 4 weeks.
- 3Day 20 to 45: The IRS faxes back your EIN confirmation (CP 575). This is the letter banks, Stripe, and tax preparers will ask for.
- 4Day 45+: Your EIN is in the IRS system. You can now open US bank accounts, register for Stripe, and file any pending forms.
EIN in hand does not mean fully active
Some banks and payment processors run real-time IRS database checks. An EIN issued within the last 7 to 14 days may not yet appear in every verification system. If a bank rejects your application saying "EIN not found," wait 2 weeks and try again. Do not file Form SS-4 a second time; that creates duplicate EINs and compliance headaches.
Common Rejection and Delay Traps
- 1Line 7b blank or zeros instead of "Foreign." This routes your application to the domestic queue, where it is flagged as invalid and set aside.
- 2Wrong fax number. Foreign applicants must use the international EIN fax line (+1 855-641-6935), not the domestic one. Faxes to the wrong line are discarded without notice.
- 3No US mailing address on line 4a. The IRS needs somewhere in the US to send your EIN confirmation. A virtual office address solves this in a single step.
- 4Mismatched entity name. The name on Form SS-4 must exactly match your state filing. "Acme Ventures LLC" and "Acme Ventures, L.L.C." can be treated as different entities.
- 5Typed signature. The IRS requires a physical signature, even on faxed applications. Print the form, sign by hand, then scan or fax.
- 6Applying twice. If your first application seems stuck, resist the urge to re-file. Duplicate EINs create a mess that takes months to unwind. Instead, call the IRS International EIN line at +1 (267) 941-1099 (Monday to Friday, 6am to 11pm Eastern) to check status.
What Comes After the EIN
Once your EIN is issued, several doors open at once. In the order most foreign founders tackle them:
- 1US business bank account. Mercury and Relay are the most common choices for non-residents. Both will ask for the EIN confirmation letter (CP 575), your formation documents, and a valid passport. Expect verification to take 2 to 7 business days.
- 2Payment processing. Stripe, PayPal, and Wise Business all require the EIN on their onboarding form. Stripe Atlas uses your EIN to open a connected Mercury or Brex account automatically.
- 3Annual IRS filings. Mark your calendar for Form 5472 + pro forma 1120, due every April 15, even with zero revenue. Missing this filing triggers a $25,000 penalty per form.
- 4State filings. Your state may require a separate annual report or franchise tax filing. Delaware, California, and New York are the most common states with mandatory annual filings.
Keep the EIN letter safe
The original CP 575 letter is issued once. If you lose it, the IRS only reissues a "confirmation letter" (Form 147C), which some banks and processors accept but others reject. Scan the CP 575 as soon as you receive it and store it with your formation documents.
Where a US Address Fits Into All of This
Form SS-4 needs a US mailing address. Your state filing needs a US business address. Your bank needs a US address that matches the state filing. Your registered agent needs a physical US address. If you are applying from outside the US, every one of these fields is a potential stopping point.
A virtual office address solves all of them at once. It gives you a real commercial US street address that can serve as your SS-4 mailing address, your state-filed business address, and your bank application address, all matching each other. Mail and IRS correspondence arrives there and gets scanned to you digitally.
save office provides commercial US street addresses in major cities, mail scanning, and the documentation you need for LLC formation, EIN applications, and bank onboarding, so every form you fill out has the same clean address from the first day.
Frequently Asked Questions
save office Editorial Team
Virtual Office Expert
Published April 13, 2026
