El formulario SS-4 del IRS es un documento de solicitud estandarizado que las organizaciones utilizan para solicitar un identificador fiscal federal único. En esencia, es el documento de entrada que inicia el proceso de establecimiento de una identidad fiscal separada para su entidad.

The IRS EIN fax number for domestic applicants is 855-641-6935. Businesses and organizations fax Form SS-4 to this line to request an Employer Identification Number (EIN), and the IRS can fax the EIN back to a return number in about 4 business days. Applicants with no legal residence or principal office in any US state use a different number, covered below.
Form SS-4 collects essential information about your business or organization, such as its legal name, address, type of entity, and reason for applying, that the Internal Revenue Service (IRS) uses to issue the EIN. This EIN is used to uniquely identify the entity for federal tax purposes and is required when: filing tax returns (corporate, partnership, etc.), opening bank accounts or applying for business credit, hiring employees, and conducting official communications with the IRS and other governmental agencies.
Use the EIN fax number that matches your situation.
Source: IRS Instructions for Form SS-4 (irs.gov/instructions/iss4).
When faxing, include a return fax number so the IRS can send your EIN back to you. The IRS does not email your EIN, it faxes it back to the return number listed on Form SS-4, usually within about 4 business days, before the written CP 575 confirmation letter arrives by mail 2 to 3 weeks later. That only works if your fax number can receive, not just send.
No SSN or ITIN? The IRS online EIN tool only works for applicants with a US legal residence, so a non-US founder without a Social Security Number or ITIN cannot use it. Fax is the fastest route instead: file Form SS-4 with "foreign" on the responsible party's SSN/ITIN line and send it to 855-215-1627 from inside the US or 304-707-9471 from outside the US.
Whether you're at your desk or on the move, here's how to get your SS-4 to the IRS and receive your EIN back by fax.
El propósito principal del formulario SS-4 es obtener un EIN del IRS. Un EIN funciona de manera muy similar a un número de Seguro Social para un individuo, pero se utiliza para fines comerciales u organizacionales. Estas son algunas razones específicas por las que obtener un EIN a través del formulario SS-4 es crucial:
Cualquier persona o entidad que deba obtener un Número de Identificación del Empleador (EIN) debe presentar el Formulario SS-4. Esto incluye, entre otros:
The IRS typically sends your EIN back by fax within about 4 business days of receiving a complete Form SS-4, as long as you included a valid return fax number.
Yes. The IRS sends your EIN back to the fax number listed on Form SS-4, not by email or online. A Fax.Plus number can send and receive, so you get the EIN the moment the IRS sends it, instead of waiting for the mailed CP 575 letter.
Yes. If your entity has no legal residence, principal place of business, or principal office in any US state or DC, fax it to 304-707-9471 from outside the US, or 855-215-1627 from inside the US.
Use 855-215-1627 if faxing from inside the United States, or 304-707-9471 if faxing from outside. This applies to most foreign-owned LLCs formed in the US without a domestic office.
Wait a few extra business days before resending, the IRS processes faxed applications in the order received. If you still have no EIN or CP 575 letter after about 2 weeks, call the IRS Business & Specialty Tax Line at 800-829-4933.
Now that you know where to fax Form SS-4 for your EIN, here's what many new businesses need next, from electing S-corp status to authorizing a tax professional.
Cree una cuenta para ahorrar tiempo y dinero enviando faxes gratuitos desde una computadora o un dispositivo móvil a cualquier parte del mundo.
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