How a Non-Resident Gets a US EIN Without an SSN

Written by CA Sumit ChandwaniChartered Accountant & Founder · Reviewed by Minal Bihani, EA

One of the most persistent myths in US company formation is that you need a Social Security Number to get an EIN, the federal tax ID your business needs to open a bank account, file taxes and operate. You don't. Non-residents obtain EINs all the time. The process is just different from the instant online method US residents use, and small mistakes can cost you weeks. Here's how it actually works.

What an EIN is and why you need it

An EIN (Employer Identification Number) is your business's federal tax identification number, the company equivalent of a Social Security Number. You need it to open a US business bank account, file federal tax returns, hire employees, and generally prove your business exists to the IRS and to banks and payment processors. No EIN, no functioning US business.

The key fact for non-residents

US residents can apply online and get an EIN instantly, but that online system requires an SSN or ITIN. As a non-resident without either, you use a different route: filing Form SS-4 by fax or mail. It's slower, but it works, and it's the standard path for foreign founders.

The process, step by step

• Form your US company first, you need the entity in place before applying
• Complete Form SS-4, the EIN application
• On the line asking for the responsible party's SSN/ITIN, write "Foreign", this is the correct entry for a non-resident without one
• Submit the SS-4 to the IRS by fax (faster) or mail (slower)
• Wait for the IRS to process it and issue your EIN confirmation (CP 575)

How long it takes

By fax, EINs for non-residents typically come back in a few business days to a couple of weeks, depending on IRS processing times. By mail, it can take several weeks. There's no instant option without an SSN/ITIN, so plan your banking and launch timeline around the wait.

Common mistakes that cause delays

• Applying before the company is actually formed
• Filling the responsible-party field incorrectly
• Inconsistent business names between the SS-4 and formation documents
• Using an unreachable fax number or wrong IRS fax line
• Listing a responsible party who isn't a true principal of the business

Do you need an ITIN too?

An EIN is for your business; an ITIN is a personal tax ID for an individual who has a US filing obligation but no SSN. Many non-resident business owners need only an EIN to operate. You may need an ITIN separately if you personally have to file a US tax return, but the two are different, and you don't need an ITIN just to get an EIN.

After you have your EIN

With your EIN issued, you can open a US business bank account (many online-friendly banks work with non-residents), set up payment processing, and meet your filing obligations, including Form 5472 if your LLC is foreign-owned. The EIN is the key to everything else, which is why getting it right and quickly matters.

Choosing your responsible party

The SS-4 asks for a "responsible party", the individual who ultimately owns or controls the entity. For a non-resident-owned LLC, this is typically you, the foreign owner. It must be a real person (not another entity in most cases) who genuinely has authority over the business. Naming someone who isn't a true principal, or using a nominee improperly, can cause problems down the line. Getting this right matters because the responsible party is the IRS's point of accountability for the entity, and inconsistencies here are a common reason applications stall.

Fax vs mail: which to choose

Both methods work, but they differ in speed. Faxing the SS-4 to the correct IRS number is generally the faster route, often producing your EIN within a couple of weeks, and you can include a return fax number to receive the confirmation. Mailing is simpler if you don't have fax access but can take significantly longer. Given that almost everything else, banking, payment processing, launching, waits on the EIN, most non-residents opt for fax to compress the timeline. Whichever you choose, accuracy on the form matters more than the method, because a rejection resets the clock entirely.

What can go wrong, and how to avoid it

The most common failure modes are avoidable. Applying before your entity is officially formed leads to mismatches. Putting a number or leaving the field blank where you should write "Foreign" causes rejection. Business names that don't exactly match your formation documents create confusion. An unreachable fax number means you never receive the confirmation. Each of these adds weeks. The way to avoid them is to treat the SS-4 as a precise document where every field must align with your formation paperwork and the IRS's expectations for foreign applicants, there's little room for approximation.

From EIN to a working business

Receiving your EIN confirmation (the CP 575 notice) is the milestone that opens up the rest of your setup. With it, you can approach US-friendly banks and fintech providers to open a business account, set up Stripe or PayPal for payments, and meet your tax filing obligations, including the pro-forma 1120 with Form 5472 if your LLC is foreign-owned. Keep the EIN confirmation somewhere safe; banks and processors will ask for it repeatedly. Treat the EIN as the foundation of your US business identity, because effectively it is.

The takeaway for foreign founders

The enduring myth that you need a Social Security Number to run a US business stops more foreign founders than it should. You don't. Thousands of non-residents obtain EINs, open US bank accounts, and operate compliant US companies every year through exactly the process described here. The route is different from the instant online method residents use, Form SS-4 by fax or mail, with "Foreign" in the responsible-party field, and it rewards precision, because small errors cause real delays. But it is a well-trodden path, not an obstacle course. Approach it methodically, get the form right the first time, and your EIN opens up everything else your US business needs. If you'd rather not deal with the IRS's foreign-applicant process yourself, it's a routine part of company formation that a firm can handle alongside the rest of your setup.

Frequently asked questions

Can I really get an EIN without an SSN?

Yes. Non-residents obtain EINs by filing Form SS-4 by fax or mail and writing "Foreign" in the responsible-party tax-ID field. The instant online method requires an SSN or ITIN, but the fax/mail route works without either.

How long does it take?

By fax, typically a few business days to a couple of weeks depending on IRS processing; by mail, longer. Since banking and launch depend on the EIN, most non-residents choose fax for speed.

Do I also need an ITIN?

Not necessarily. An EIN is your business's tax ID; an ITIN is a personal tax ID for an individual with a US filing obligation but no SSN. Many non-resident owners need only an EIN to operate, and you don't need an ITIN just to get one.

The bottom line

You absolutely can get a US EIN as a non-resident without an SSN, the path is Form SS-4 by fax or mail, with "Foreign" in the responsible-party field. The process is straightforward but unforgiving of small errors, each of which can add weeks. MOREOFTAX forms your US company and obtains your EIN as part of formation, no SSN required, and sets you up for banking and compliance. Get a free quote.