In addition to obtaining an Employer Identification Number (EIN) by fax, phone or mail, the IRS allows you to request the number online at their website (www.irs.gov) to have your request processed within minutes under an improved procedure.  For most purposes your EIN can be used immediately.

You can apply for the EIN using the IRS's interactive website.  The site requests information and does automatic validity checks.  If the information entered doesn't pass the validity checks, the application is rejected.  If your application is rejected, you can correct the information and resubmit.  The requested information is tailored to the type of entity that you are establishing.  Help screens are provided so that it is not necessary to print the instructions for Form SS-4 to look for answers during the application process.

When the application process is completed, you can view, print and save the confirmation notice instead of having to wait for the IRS to mail it to you.  Other parties that you authorize can receive the EIN but cannot print, view or save the confirmation notice.  The IRS then mails the confirmation notice to you.  The online application process, however, is only available for domestic taxpayers.  the advantage of using the online process is the elimination of time lag between applying for the EIN and receiving it from the IRS, which can delay the first use of your EIN for business purposes.