EIN for Non-US Residents: The Number Banks Actually Ask For

Most non-US founders treat the formation certificate as the finish line. It is not. The certificate makes your company exist in the eyes of one US state; the Employer Identification Number makes it exist everywhere else.

The EIN is the nine-digit number the IRS assigns to your company. It is the identifier banks, payment processors and the IRS itself use to recognise your entity. Until you hold it, your LLC is a legal shell: able to sign a contract, but unable to open an account, accept card payments, or file the returns it is legally required to file.

The good news is that obtaining an EIN as a non-resident is a well-trodden, largely mechanical process. The bad news is that it is unforgiving about details, and a careless application creates problems that surface months later — usually in the middle of a bank compliance review.

An EIN is a federal tax identification number for a business. It is not tax residency, not a visa and not a licence to trade. It is also not an ITIN, which is the comparable number for individuals with US filing or reporting obligations.

Most importantly, an EIN does not change where you personally owe tax. A single-member LLC owned by a non-resident is generally treated as "disregarded" for US federal tax purposes: the company is not itself a separate taxpayer, and foreign-source income with no US connection is normally not subject to US income tax.

That does not mean there is nothing to do. It means the obligation is informational rather than a tax bill — and the penalties for ignoring it are severe.

The number is required far more often than founders expect, and far less often than some service pages suggest.

Yes. A Social Security Number or ITIN is not a prerequisite for a company EIN. On Form SS-4, the field asking for an SSN, ITIN or EIN is completed with "Foreign" or "N/A" when the applicant has none.

There is a practical catch. The IRS online application only accepts an application when the responsible party has a valid SSN or ITIN, so non-resident applicants generally cannot use it. You apply by fax or by post instead — fax is the faster route for most applicants, while postal applications can run well beyond two months depending on the IRS backlog.

You do not need to be physically present in the United States, and no US representative is required.

Form SS-4 asks for a "responsible party" — the individual who ultimately owns or controls the entity. Since 2017 the IRS has been strict about this: a nominee or an agent cannot be listed. For a single-member LLC, the responsible party is normally the owner.

This matters because the responsible party name has to be consistent everywhere: on the formation documents, the operating agreement, the bank application and the tax filings. Founders who list a nominee to keep their own name off the paperwork frequently discover at bank onboarding that the inconsistency is itself the red flag.

If control of the company later changes, the IRS expects the new responsible party to file an updated Form SS-4 within 60 days.

The application is a completed Form SS-4, written in English, with the company name matching your state formation document character for character — including whether it says "LLC" or "Limited Liability Company". A single mismatched character is a common reason for delay.

Send it to the fax number given in the current IRS instructions for Form SS-4, and include a return fax number if you want the assignment letter back quickly. Without one, the IRS replies by post, which adds weeks.

If an agent applies on your behalf, the SS-4 must include the third-party designee section so that the IRS is permitted to send the notice to them.

The IRS charges nothing for an EIN. Faxed applications are commonly returned within days to a few weeks, though the IRS advises allowing considerably longer during busy periods — so plan your banking and payment-processing timeline around the slower case, not the faster one.

Anything you pay for should cover the work around the filing rather than the act of filing: the formation, the operating agreement, the registered agent, and the discipline of keeping names, dates and documents consistent.

Almost every painful EIN story is one of the following.

The EIN unlocks three things, in order: banking, payments, compliance.

Open the business account first, because processors usually ask for it. Then set up the processor. Then start bookkeeping from the first transaction rather than reconstructing it at year end.

The recurring obligation is the annual return: Form 5472 alongside a pro forma Form 1120, due 15 April for the previous tax year, or 15 October with an extension. Even a dormant LLC with no activity is expected to report. This is the part non-resident owners underestimate most — and the part that produces the penalties.

An EIN is cheap, fast and largely procedural, which is precisely why it gets treated casually. But it is the number everything else is built on: the bank account, the payment processor, the annual filing, and the paper trail that shows your structure is real.

Get the details right the first time — the correct responsible party, a company name that matches the state filing exactly, and a formation date that precedes the application. Everything downstream becomes dramatically easier.