EIN (Employer Identification Number)

The 9-digit federal tax identifier assigned by the IRS to a business entity, used for tax filings, banking, and platform onboarding.

Definition

The EIN (Employer Identification Number) is the federal tax ID of a US business entity. Format: XX-XXXXXXX. It is permanent and does not require renewal. Non-residents obtain an EIN via IRS Form SS-4, faxed to the IRS international EIN unit with 'Foreign' entered in the SSN field for the responsible party.

Context

Banks, Stripe, Amazon Seller Central, and most US platforms require the EIN before they will onboard a US LLC. The EIN is therefore a practical prerequisite for operational use of the LLC. Delewarellc's bundle includes EIN preparation; turnaround is typically 1-2 business days for a correctly-filed Form SS-4.

Example

A Pakistani founder forms a Delaware LLC. Delewarellc prepares Form SS-4 with the founder's name on Line 7a and 'Foreign' on Line 7b. The form is faxed to the IRS international EIN unit. The CP 575 confirmation letter with the EIN comes back within 2 business days.

Common pitfalls

Writing a passport number in the SSN field on Form SS-4 is the most common rejection reason. The correct entry is the literal word 'Foreign'.
Confusing the EIN (LLC tax ID) with an ITIN (personal tax ID for non-residents). Most non-resident LLC owners need the EIN but not the ITIN.
Losing the CP 575 letter is recoverable via Form 147-C request to the IRS, but adds 4-8 weeks of friction.

What the EIN actually represents to the IRS

The Employer Identification Number is the federal tax identity of a business entity. The number itself is nine digits printed in the format XX-XXXXXXX, and once the IRS assigns it to your Delaware LLC it stays attached to that entity for the life of the company. There is no annual renewal, no expiry date, and no fee to keep it active. The name suggests it is only for companies with payroll, but that framing is misleading. A single-member foreign-owned LLC with no employees and no US staff still needs one, because the EIN functions as the entity-level account number that the IRS, banks, and payment processors use to recognize the company as a distinct US business rather than an extension of its owner.

It helps to think of the EIN as the business equivalent of a personal tax identifier, except that it belongs to the LLC and not to you as an individual. Your own personal foreign tax number, your passport, and any future ITIN are separate threads that describe you as a person. The EIN describes the company. This separation is the whole point of forming a Delaware LLC in the first place, because it creates a legal person that can hold a bank account, sign contracts, and file its own tax forms under its own number.

For a non-resident founder, the EIN is the first concrete piece of US infrastructure the company owns. The Certificate of Formation, filed with the Delaware Division of Corporations for the $110 state fee, creates the entity at the state level. The EIN then registers that entity at the federal level. Without it, the LLC exists on paper in Delaware but cannot really operate in the wider US financial system.

Why a single-member foreign-owned LLC still needs one

A common assumption is that a company with one owner, no US employees, and no US office can skip the EIN because there is nothing to report. That is not how the US system works. The IRS treats a single-member LLC owned by a non-resident as a disregarded entity for income tax purposes, which means the company itself does not file an income tax return in the way a corporation would. But disregarded status does not remove the need for an EIN. The entity still has to file Form 5472 attached to a pro forma Form 1120 each year, and those filings reference the LLC by its EIN. The number is the anchor that ties the reporting back to the company.

Beyond tax filings, the EIN is what makes the LLC usable in practice. Banks such as Mercury, Wise, Relay, Lili, and Payoneer all require the EIN before they will open a business account for the entity. Payment platforms like Stripe ask for it during onboarding. Marketplaces such as Amazon Seller Central request it when verifying a US business. Without the EIN, every one of these doors stays closed, which is why the glossary entry describes it as a practical prerequisite for operational use of the LLC.

So even the simplest possible structure, one foreign individual owning one Delaware LLC that sells a digital product, needs the EIN. The company will use it to open a bank account, to receive payments, to file its annual federal forms, and to identify itself to vendors. There is no realistic path to running the business without one.

How non-residents obtain the EIN without an SSN

The obstacle that trips up most non-resident founders is that the IRS online EIN application requires the responsible party to enter a valid Social Security Number or ITIN. A founder living abroad who has never worked in the US usually has neither. The online tool simply will not let them proceed, which leads some people to assume they are not eligible for an EIN at all. They are eligible. The path is different.

Non-residents apply by submitting Form SS-4 to the IRS international EIN unit, with the literal word Foreign written in the field that would otherwise hold the responsible party's SSN. This is the single detail that matters most. The IRS specifically accepts Foreign as a valid entry for a responsible party who has no US tax number, and entering it correctly is what allows the application to be processed. A correctly prepared SS-4 sent through this channel produces an EIN without the applicant ever needing an SSN or ITIN.

The EIN itself is free. The IRS does not charge for issuing it, and any service that quotes a separate line item labeled as an IRS EIN fee for the number itself is charging for the preparation work, not for the number. A free EIN obtained via SS-4 typically takes around 8 to 10 business days through the standard fax channel, though a cleanly filed form can come back faster. The Delewarellc bundle includes EIN preparation as part of its $297 one-time pricing rather than billing it as a recurring annual charge.

The single most common rejection and how to avoid it

The error that causes more EIN rejections than any other is writing a passport number into the field meant for the responsible party's SSN. It feels intuitive. The applicant has no US number, so they reach for the closest identity document they hold and copy the passport number into the box. The IRS does not accept this. The correct entry is the word Foreign, written out as plain text, and nothing else. A passport number in that field usually results in the application being returned or stalled, adding days or weeks to a timeline that should have been short.

This is worth dwelling on because the cost of the mistake is asymmetric. The form is otherwise simple, and the rest of the fields are straightforward for a single-member LLC. Getting this one field wrong undoes all of that. When a formation service prepares the SS-4 on your behalf, this is one of the specific things it is checking, which is part of why founders who have been rejected on a do-it-yourself attempt often switch to having the form prepared for them.

If you are reviewing a prepared SS-4 before it is submitted, the responsible party section is the first place to look. Confirm that the name matches the founder's passport exactly and that the SSN field reads Foreign. Those two checks catch the overwhelming majority of avoidable problems. Everything downstream, from banking to annual filings, depends on the EIN being issued cleanly the first time.

EIN versus ITIN, a distinction that confuses many founders

A persistent source of confusion is the difference between the EIN and the ITIN. They sound similar, both are issued by the IRS, and both are tax identifiers, but they describe completely different things. The EIN identifies the business entity, your Delaware LLC. The ITIN, or Individual Taxpayer Identification Number, identifies a person who needs to interact with the US tax system but is not eligible for a Social Security Number. One is for the company, the other is for the human being.

For most non-resident single-member LLC owners, the practical reality is that they need the EIN but not the ITIN. The EIN lets the LLC bank, transact, and file its federal forms. An ITIN only becomes relevant in narrower situations, such as when an individual has a personal US tax filing obligation in their own name, or when a specific platform or withholding situation requires the person rather than the company to be identified. A founder selling digital products through a disregarded LLC generally does not hit those triggers, so chasing an ITIN before it is needed adds delay and cost for no benefit.

The glossary entry flags this directly, noting that confusing the EIN with the ITIN is a frequent mistake. The clean mental model is to treat the EIN as the company's number and the ITIN as a personal number that you only pursue if a concrete requirement actually appears. Starting with the EIN and adding an ITIN later if circumstances demand it is the order that fits most foreign-owned LLCs.

The CP 575 confirmation letter and why you should protect it

When the IRS assigns the EIN, it issues a confirmation document called the CP 575 letter. This letter states the entity's legal name and its newly assigned EIN, and it is the original proof that the number belongs to your LLC. Banks and platforms sometimes ask to see it during onboarding, treating it as authoritative evidence that the EIN and the company name match. Because it is the original issuance notice, the IRS only sends the CP 575 once.

Losing it is not fatal, but it is inconvenient. If the CP 575 is misplaced, the recoverable substitute is a Form 147-C letter, which the IRS can issue to confirm an existing EIN. The catch is friction. Requesting a 147-C can add several weeks of waiting, and during that gap you may be stuck if a bank or processor insists on seeing official EIN confirmation before proceeding. The glossary entry frames this as recoverable but as something that adds 4 to 8 weeks of friction, which is a real drag on a founder trying to move quickly.

The practical lesson is to save a clean digital copy of the CP 575 the moment it arrives and to store the original somewhere you can find it. Treat it with the same care as the Certificate of Formation. Both documents prove a different layer of the company's existence, the Certificate at the state level in Delaware and the CP 575 at the federal level, and you will reach for both repeatedly during banking and platform setup.

Where the EIN sits in the formation timeline

The EIN is not the first step. It depends on the LLC already existing, because the IRS is assigning a tax number to a real entity. The sequence starts with the Certificate of Formation filed with the Delaware Division of Corporations for the $110 state fee, which brings the company into legal existence. Only once the entity is formed does the EIN application make sense, since Form SS-4 names the LLC by its exact legal name on the line reserved for it.

In a typical non-resident formation that runs on an 8 to 10 business day overall schedule, the EIN preparation tends to fall in the back half of that window, after the Delaware filing is confirmed. The free EIN obtained via SS-4 then takes its own processing time on top, roughly 8 to 10 business days through the standard channel, so founders should plan for the EIN to arrive somewhat after the state formation is complete rather than on the same day.

Understanding this ordering helps set realistic expectations. A founder who needs a bank account by a certain date should count backward from that date and allow time for formation first, then EIN issuance, then the bank's own review. Trying to compress these into a single instant leads to disappointment, because each layer of the US system has to recognize the company before the next one will. The EIN is the bridge between the Delaware-level entity and the federal and commercial systems that come after it.

How the EIN unlocks US banking

For most non-resident founders, opening a US business account is the immediate reason they want the EIN. Platforms such as Mercury, Wise, Relay, Lili, and Payoneer all build their onboarding around the EIN as the entity identifier. When you apply, the bank cross-references the EIN against the LLC name to confirm the account belongs to a recognized US business. Without the EIN, the application cannot even begin, because there is no federal number to attach the account to.

A worked example makes the flow concrete. A founder forms a Delaware LLC, receives the EIN through a correctly filed SS-4, and then applies to Mercury using the LLC name, the EIN, and the CP 575 as supporting proof. The bank verifies that the EIN and the name match, reviews the ownership and business description, and opens the account. The same EIN is then reused when the founder later adds a Wise account for multi-currency needs or a Relay account for sub-account structure. The number is shared across every banking relationship the company holds.

This is why the glossary describes the EIN as a practical prerequisite for operational use. The Delaware LLC without an EIN is a legal shell that cannot receive money. With the EIN, it can hold accounts at several institutions at once, each of which keys its records to that same nine-digit number. The EIN is the constant thread running through the company's entire banking footprint.

The EIN in payment processing and marketplace onboarding

Payment processors and marketplaces sit alongside banks as the other major consumers of the EIN. When a Delaware LLC applies to a processor, the onboarding flow asks for the EIN to verify that a real US business entity stands behind the account. The combination of a Delaware LLC, an EIN, and a US bank account is the configuration that processors and marketplaces are built to recognize, which is why so many non-resident founders pursue this structure specifically to gain access to US payment rails.

Consider a founder who previously tried to onboard a processor using only their personal foreign identity and was turned away. After forming a Delaware LLC, obtaining the EIN, and opening a US business account, they reapply as the LLC. The processor now sees a US entity with a federal tax number and a matching bank account, which is the profile its underwriting expects. The EIN is the piece that converts a foreign individual into a recognizable US business in the processor's eyes.

It is worth being honest about the limits. The EIN improves the odds of approval but does not guarantee it, because country of residence, the nature of the products sold, and the platform's own risk policies all still factor in. Higher-risk categories face stricter review regardless of how clean the EIN and entity are. The EIN removes one large obstacle, the absence of a US business identity, without erasing every other consideration that a processor weighs.

How the EIN connects to annual federal filings

The EIN is the identifier that ties your Delaware LLC to its yearly federal reporting. A single-member LLC owned by a non-resident is treated as a disregarded entity, and that status carries a specific obligation. The entity files Form 5472 together with a pro forma Form 1120 each year to report reportable transactions between the LLC and its foreign owner. Both of those forms reference the company by its EIN, so the number is the link between the filing and the entity it describes.

The stakes here are high enough that they deserve attention rather than being treated as a formality. The penalty associated with failing to file Form 5472 when required is $25,000, which is large relative to the modest costs of forming and maintaining the LLC. Because the filing is keyed to the EIN, a company that obtained its EIN but then ignored the annual reporting can find that obligation catching up with it. The EIN does not create the filing duty on its own, but it is the thread that the IRS follows to associate the entity with its reporting requirements.

Separately, the EIN should not be confused with the Delaware franchise tax, which is a state-level obligation. Delaware charges a flat $300 franchise tax for an LLC, due each year on June 1, and that payment goes to Delaware rather than the IRS. The EIN governs the federal side, while the franchise tax sits on the state side. Keeping these two streams distinct, federal filings under the EIN and the state franchise tax, helps founders avoid mixing up which authority expects what.

Related terms and how they fit together

The EIN does not exist in isolation. It is the hub that several related concepts connect to, and understanding those links makes the whole picture clearer. Form SS-4 is the application that produces the EIN, and the international versus domestic application paths describe the different channels for filing it depending on whether the responsible party holds an SSN or ITIN. For non-residents, the fax-based international path with Foreign in the SSN field is the route that applies, which is why the SS-4 and the EIN are so tightly coupled.

On the personal side, the ITIN is the individual counterpart that some founders eventually need, and the distinction between the company's EIN and a person's ITIN is one of the recurring clarifications in this area. On the reporting side, Form 5472 is the annual filing that the disregarded LLC submits, referencing the entity by its EIN. And on the tax-status side, a foreign-owned disregarded LLC that provides documentation to a US payer typically uses Form W-8BEN-E to identify the foreign beneficial owner, rather than Form W-9, which is for US persons.

Holding these relationships in mind helps a founder see why the EIN is treated as foundational. It flows out of the SS-4, it anchors the 5472 reporting, it coexists with but differs from the ITIN, and it supports the banking and processing relationships that the company relies on. Each related term is one spoke connected to the EIN at the center.

Edge cases that come up in practice

Most single-member foreign-owned LLCs follow a clean path, but a few edge cases recur often enough to be worth naming. One is the founder who already obtained an EIN for a prior entity and assumes it carries over to a new LLC. It does not. Each distinct entity needs its own EIN, because the number identifies a specific company. Forming a second Delaware LLC means filing a second SS-4 and obtaining a separate EIN for that second company, even if the same person owns both.

Another edge case involves changes to the responsible party or the company name after the EIN has been issued. The EIN itself stays the same through ordinary changes, since it is permanent and does not get reassigned, but the IRS expects certain updates to be reported so its records stay accurate. A founder who renames the LLC or restructures ownership should treat the EIN as stable while making sure the surrounding details are kept current with the IRS, so that the name on file continues to match what banks and platforms see.

A third situation is the lost confirmation letter combined with a tight deadline. As covered earlier, the CP 575 is issued once, and recovering proof of the EIN through a 147-C request can add weeks. A founder facing a bank that insists on official EIN confirmation, with no saved copy of the CP 575, is in a genuinely awkward spot. The remedy is preventive, which is to archive the CP 575 immediately so the 147-C detour never becomes necessary.

Common misunderstandings worth correcting

Several misunderstandings about the EIN circulate among first-time non-resident founders, and clearing them up early saves frustration. The first is the belief that the EIN costs money to obtain from the IRS. It does not. The IRS issues the EIN at no charge, and any fee a founder pays is for the preparation and handling of the application, not for the number itself. A service may fold EIN preparation into a one-time package price, as the $297 Delewarellc bundle does, but the underlying number from the IRS is free.

The second misunderstanding is that a non-resident without an SSN cannot get an EIN at all. This belief comes from hitting the wall of the online application, which does require an SSN or ITIN. The truth is that the fax-based SS-4 path exists precisely for this case, using Foreign in the SSN field, so non-residents are fully able to obtain an EIN through the correct channel. The online tool's limitation is not the IRS saying no, it is just the wrong door.

A third misunderstanding ties the EIN to the federal beneficial ownership reporting regime. Founders sometimes assume that obtaining an EIN obligates them to file a beneficial ownership information report. For US-formed LLCs, the FinCEN Interim Final Rule of March 26, 2025 made domestic entities exempt from BOI reporting, so a Delaware LLC formed by a non-resident is not subject to that particular filing. This is general information rather than legal or tax advice, and a founder with a complicated structure may want to confirm specifics with a qualified professional, but the EIN itself does not trigger a BOI obligation for a US-formed LLC.

Related terms

Related glossary terms & guides

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