Having an EIN ensures compliance with federal tax requirements and smooth business operations.

Applying for an Employer Identification Number (EIN) is a free service provided by the Internal Revenue Service (IRS). Be cautious of third-party websites that charge for this process—it is entirely free through the IRS.

Who Needs an EIN?

All EIN applications must include the name and taxpayer identification number (SSN, ITIN, or EIN) of the “responsible party.” This individual or entity controls, manages, or directs the applicant entity and its funds. Unless the applicant is a government entity, the responsible party must be a natural person, not another entity.

Methods to Apply For an EIN

1. Apply Online

The fastest and most convenient way to apply for an EIN is through the IRS's Internet EIN application. This method allows applicants to complete and validate their information online, with the EIN issued immediately. This service is available to entities whose primary location is within the United States or its territories.
 

2. Apply by Fax

For those who prefer to apply by fax, complete Form SS-4 and send it to the appropriate fax number listed on the IRS’s website. Ensure the form is filled out accurately. If a fax number is provided, the IRS will fax the EIN back within four business days.
 

3. Apply by Mail

Mail applications take longer to process—up to four weeks. Complete and mail Form SS-4 to the appropriate IRS address. If a new EIN is required, it will be issued and sent to the applicant using the procedures applicable to their entity type.
 

4. Apply by Phone (for International Applicants)

International applicants can call the IRS at 267-941-1099 (not toll-free) between 6 a.m. and 11 p.m. Eastern Time, Monday through Friday. The caller must be authorized to receive the EIN and answer questions regarding Form SS-4. A third-party designee can apply, but their authority terminates once the EIN is assigned.

Essential EIN Guidelines