Obtaining an EIN
Obtaining an Employer Identification Number (EIN) is quite easy to do.
You can fill out a Form SS-4 online at www.irs.gov/businesses/small and submit. You will be issued an EIN immediately upon validation from the IRS. However, a word of caution: the IRS will send a letter in approximately 10 days confirming your number. There have been instances where the online number and the confirming letter contained different numbers. The confirmation letter is the actual number assigned. If that discrepancy happens to you, make sure you notify every company (usually your bank, accountant, payroll processors) of the change. Otherwise, you will have to clear it up at tax time, which is the worst time to address those types of issues with the IRS.
You can also apply for your EIN via telephone by calling 1-800-829-4933, or simply mailing Form S-44 to the IRS at the address listed on the form.
Click here for official IRS instructions and form.