Jurisdicción de Estados Unidos,
explicada con claridad.

U.S. jurisdiction,
explained clearly.

Federal tax ID edition
3 guides published

EIN & Federal Tax ID

Knowing the nine digits is never enough. What they ask for is the proof
The lead

The number arrives, the company exists, and everything seems settled — until a corporate bank account, a financing application or a foreign registry asks for official proof of EIN. At that counter, reciting the digits proves nothing. What is accepted is the IRS document that ties the number to your entity, and producing it is a compliance requirement designed to prevent fraud, not a formality someone invented.

Business · EIN & Federal Tax ID
Official Proof of EIN: What It Is, Valid Documents, and How to Retrieve It

And the number itself is narrower than it looks. An EIN is not a business licence; it does not by itself grant immigration status, work authorisation or a tax classification. It is the federal identifier attached to the entity data the IRS holds — which is why the quality of the original application decides whether the number works everywhere later.

Start here

Three ways in, by where the file is stuck.

1

Which IRS papers are accepted as proof, and how to retrieve one that was lost.

2

Formation, internal governance, EIN, then the bank-ready set.

3

Not a licence, not a status, not a tax classification.

The sequence
documents required to register a company in usa
Formation documents first, then internal governance, then the IRS, then the bank.
The application
Businesswoman applying for an EIN for her U.S. company
Address formatting has to match IRS, W-9 and banking records, or the number works in some places and not others.

Errors of proof

Three ways a real EIN fails at the counter
The recited number

A bank onboarding a company, a lender or a foreign registry needs official proof. The number by itself does not satisfy a compliance check built to prevent fraud and money laundering.

The lost notice

Retrieving IRS verification once the original notice is gone is its own bureaucratic process, and it takes time you may not have before a closing date.

Mismatched data

The number is tied to the entity data on file. When the address on the IRS record, the W-9 and the bank file do not match, the identifier stops working smoothly.

The three numbers

Two identify a person. Only one identifies a company

EIN

Nine digits the IRS uses to identify a business for tax purposes: payroll, banking, merchant accounts, certain filings and many KYC checks. It is the only one of the three that belongs to the entity rather than to a human being.

The company’s number

SSN

The Social Security Number identifies a person. An EIN is not a substitute for it and does not confer anything it confers — not work authorisation, not immigration status.

A person’s number

The Individual Taxpayer Identification Number also identifies a person: the taxpayer who is not eligible for an SSN. It sits in the neighbouring section of this edition, not here.

The other personal number

Getting the number

Before it exists

The federal identifier, its real uses, and the four things it does not grant.

The definitive list, from formation filing through EIN to a bank-ready set.

Proving it later

After it exists

Which IRS documents are valid proof, and how to retrieve one that was lost.

A tax document used outside the United States needs authentication on top of retrieval.

The file

Four things this section settles
9
Digits

An EIN is a nine-digit federal identifier the IRS uses to identify a business for tax purposes.

3
Numbers, one company

EIN, SSN and ITIN. Only the EIN identifies an entity; the other two identify people.

0
Rights it grants

Not a business licence, not immigration status, not work authorisation, not a tax classification.

IRS
Who issues the proof

Official proof of EIN comes from the Internal Revenue Service, not from the company that holds the number.

Notary Public Center

The proof, prepared for whoever is going to read it

A tax document that has to satisfy a bank, a lender or a foreign registry needs more than retrieval: it needs to be certified, and often authenticated for use abroad. Notary Public Center prepares, certifies and routes U.S. corporate documents for that destination.