IRS form SS-4 allows one to apply for an Employer Identification Number (EIN). This number is necessary if you are looking to hire employees for your business in the United States. There are several ways to apply for an EIN. You can apply online, by phone, by fax or by mail. Applying by mail is the slowest way to receive your EIN, as you can receive the number instantly online or by phone. However, depending on your situation, you may still want to apply by mail.
Acquire IRS form SS-4. You can download the form in the "Forms and Publications" section of the IRS.gov website, or you can call 1-800-TAX-FORM (829-3676) to obtain the form.
Gather the information necessary to complete the form. You will need your name, social security number, business address and legal business status. For example, you will need to know if your business is a sole-proprietorship, a partnership or a corporation.
Fill out IRS form SS-4 complete with a blue or black ink pen. Check the form when you are finished to verify it for accuracy. Sign and date the form at the bottom.
Mail the form via first-class mail to the IRS's EIN processing center. The address is:
Attn: EIN Operation
Cincinnati, Ohio, 45999
If you are not a legal resident of any US state, mail the form to:
Attn: EIN International Operation
Philadelphia, Pennsylvania 19255
Wait for approximately four to six weeks to receive your EIN by mail.