What Is an EIN? Meaning, Uses, and How Non-US Founders Get One

Here is the full picture, written for founders outside the United States:

An EIN is an Employer Identification Number — a nine-digit federal tax ID, written in the format 12-3456789, that the IRS assigns to a business entity. The IRS describes it as a federal tax ID number for businesses, tax-exempt organizations, and other entities. It identifies your company to the IRS the same way a Social Security Number identifies an individual.

An EIN belongs to the business, not to you personally. Once your LLC has one, the number stays with that company for its life and is used on tax filings, bank applications, and official paperwork. Despite the word "Employer," you do not need employees to get or use an EIN. Many single-owner LLCs hold one purely for banking and tax filing.

For most non-US founders, the EIN is the key that unlocks the practical side of running a U.S. company. You are typically asked for it when you:

• Open a U.S. business bank account: Banks and fintechs use the EIN to identify the company and run their checks.

• Set up Stripe, PayPal, or another payment processor: Payment platforms ask for the EIN to verify the business behind the account.

• File federal taxes: A foreign-owned U.S. LLC generally files using its EIN, including information returns the IRS requires.

• Hire employees or contractors: If you ever pay U.S. workers, the EIN is used for employment tax reporting.

• Apply for licenses or sign vendor contracts: Many third parties record the EIN as the company's tax identifier.

An EIN does not, by itself, guarantee that a bank or payment processor will approve you. Those decisions depend on the provider, your documents, your business model, and your country. The EIN is a requirement those companies ask for, not a promise of acceptance.

In strict IRS terms, a single-member LLC with no employees and no special tax obligations can sometimes use the owner's own taxpayer ID instead of an EIN. In practice, that exception rarely helps a non-US founder, for one simple reason: you usually have no U.S. Social Security Number to use in its place, and the banks and platforms you want to work with ask for an EIN regardless. Beyond that, the IRS requires an EIN outright once a business has employees, files employment or excise tax returns, or is taxed as a corporation or partnership, so most companies need one sooner or later.

So the realistic answer for a foreign-owned U.S. LLC is yes: you will almost certainly need an EIN before you can open a bank account, connect a payment processor, or file the federal forms a foreign-owned LLC is expected to file. If you have already formed your LLC, the EIN is normally the very next step.

These three U.S. tax IDs are constantly confused, and sorting them out saves a lot of wasted effort. The short version: an EIN identifies a business, while an ITIN and an SSN identify individuals. All three are kinds of Taxpayer Identification Number (TIN), the umbrella term the IRS uses, and all are separate from any state tax ID a state may issue for sales tax or payroll. For the full picture, see the EIN & ITIN guide for non-US founders.

The most important point for founders: you do not need an ITIN or an SSN to get an EIN. The IRS does not require a foreign responsible party to hold either before the business can receive its EIN. Some founders eventually need an ITIN for their personal U.S. tax situation, but that is a separate question from the company's EIN, and it should not hold up your formation paperwork.

This is where the advice you find online usually breaks down. The IRS online EIN application returns a number immediately, but the IRS Form SS-4 instructions are explicit that the responsible party "must have a valid taxpayer identification number (SSN, EIN, or ITIN)" to use it, and that if you have "no legal residence, principal place of business, or principal office or agency in the United States," you "can't use the online application." Most non-US founders meet neither condition, so the online route is closed to them.

The path that does work is Form SS-4, submitted one of three ways:

1. By fax to the IRS (855-215-1627 from inside the U.S., or 304-707-9471 from outside). The IRS generally faxes the EIN back within about four business days.

2. By mail to Internal Revenue Service, Attn: EIN International Operation, Cincinnati, OH 45999. This takes roughly four weeks.

3. By phone, available to international applicants only, at 267-941-1099 (not a toll-free number), 6:00 a.m. to 11:00 p.m. Eastern, Monday through Friday. The caller must be authorized to answer the SS-4 questions and receive the EIN.

On the form itself, the part that trips people up is the "responsible party." That has to be a real person who actually owns or controls the LLC (normally you, the founder), not your registered agent or your formation company.

In practice, the responsible-party line is where most non-US founders stall. When that person has no SSN or ITIN and is ineligible to get one, the IRS instructions say to enter "Foreign" (or N/A) on line 7b. The application still goes through. We complete this step with founders constantly; the entity name, the responsible party, and that single "Foreign" entry are what move an SS-4 from confusing to done.

The EIN itself is free. The IRS does not charge for issuing one, and it is worth saying plainly because the search results around this topic are full of paid "EIN packages."

Timing depends entirely on how you apply. For non-US founders the realistic ranges are about four business days by fax, about four weeks by mail, or a same-call assignment by phone for international applicants. Build that lead time into your plan rather than assuming the "instant" experience you may have read about.

Because the fax and mail routes take time, line the EIN up before any bank or filing deadline that depends on it; you cannot open the US account until the number is issued. If a US federal return happens to fall due while your SS-4 is still pending, the IRS's own instruction is to write "Applied For" and the date you applied in the space for the EIN, rather than leaving it blank or waiting. If a tax payment is due in that same window, you send it to the IRS with your name as shown on the SS-4 and the date you applied, since you have no number to quote yet. For a typical foreign-owned single-member LLC with no employees this rarely comes up, but it is the IRS's answer if it does.

Before you file, it helps to have the basics ready so the form is accurate on the first attempt:

• The exact legal name and mailing address of the LLC, matching your formation documents.

• The formation state and the date the LLC was formed.

• The responsible party's full name and their SSN or ITIN, or "Foreign" on line 7b if they have neither and are ineligible.

• The reason you are applying (for most founders, starting a new business or banking purposes).

• The type of entity and the number of members.

One quiet rule worth knowing: the IRS limits EIN issuance to one per responsible party per day, so a single person forming several companies cannot get every EIN at once.

An EIN comes after you form the company. The full US company formation guide for non-residents covers the steps before this one. CORPBOLT helps non-US founders prepare and submit the SS-4 and organize the EIN confirmation alongside the rest of their company records, within the timelines and limits the IRS controls.

Once your EIN is issued it does not expire, and the IRS will not assign your company a second one, so the task is usually finding the number you already have rather than getting a new one. Look in these places first:

• The IRS confirmation notice. When the IRS first issues an EIN it sends a CP 575 confirmation notice, and with CORPBOLT your EIN paperwork is kept in your account documents.

• A past federal tax return or information return filed for the LLC.

• An application you completed for a US bank account or payment processor.

• Any state or local licence or registration records you hold.

If the number is in none of your records, the IRS can confirm it. An authorised person (the responsible party, or someone they authorise) can call the IRS Business and Specialty Tax Line at 800-829-4933 and, after an identity check, request Letter 147C, "EIN Previously Assigned", which is the IRS's replacement confirmation letter since it will not issue a duplicate CP 575. A US business tax transcript is the other IRS route. The 147C is also the document most banks and processors accept as proof of your EIN.

Because the EIN belongs to the entity, most routine changes do not call for a new one. What matters is whether the business itself changes, not just its details.

One rule clears up a frequent worry: a single LLC uses one EIN even across multiple locations, while two separate legal entities each need their own. The IRS allows one EIN per entity and issues only one per responsible party per day, so a founder setting up several companies at once cannot get every number on the same day.

Is an EIN free?

Yes. The IRS issues EINs at no cost. If you use a formation service, any fee covers preparing and submitting the application, not the number itself.

Can I get an EIN without an SSN or ITIN?

Yes. A foreign responsible party who has no SSN or ITIN and is ineligible to get one can still obtain an EIN by filing Form SS-4 by fax, mail, or the international phone line, entering "Foreign" on line 7b.

Is an EIN the same as a tax ID?

An EIN is one type of U.S. tax ID, specifically the federal tax ID for a business. It is different from an SSN or ITIN, which are tax IDs for individuals.

Do I need an EIN before opening a business bank account?

Almost always, yes. U.S. banks and fintechs typically require the EIN to open a business account. Approval still depends on the bank's own review of your business, documents, and country.

How do I find my EIN if I've lost it?

Check your IRS CP 575 confirmation notice, your CORPBOLT account documents, a past federal return, or a bank or payment-processor application first. If it is in none of them, an authorised person can call the IRS Business and Specialty Tax Line at 800-829-4933 and request Letter 147C, the IRS's replacement EIN confirmation.

Do I need a new EIN if I change my LLC's name or address?

No. Changing the LLC's name, address, or responsible party does not require a new EIN, because the number belongs to the entity. You generally need a new EIN only when the business structure or ownership changes in a way the IRS treats as a new entity, such as converting a sole proprietorship into an LLC.

• IRS: Employer Identification Number (EIN)

• IRS: Instructions for Form SS-4 (Application for EIN)

• IRS: Responsible parties and nominees

CORPBOLT prepared this guide as education for non-US founders applying for an EIN after forming a U.S. LLC. Every factual claim about who can apply, how, and how long it takes is drawn from current IRS source material (the EIN guidance and the Form SS-4 instructions linked above) and reviewed for accuracy, plain-English clarity, and honesty about the parts the IRS, banks, and payment processors control rather than CORPBOLT. It is refreshed when the IRS changes its EIN process. This article is general information, not legal or tax advice.

Getting set up: CORPBOLT forms your Wyoming LLC with a U.S. business address from $349/year; Launch ($599) adds the EIN and a digital mailbox. See how CORPBOLT does this →

Approval note: Eligibility and approval decisions are made by each bank, fintech, and payment processor. Requirements can vary by provider, country, business model, and account history.