The rules for obtaining your EIN by phone have changed. As of January 2014 the IRS will no longer accept requests for EIN’s via telephone. If you do call they will refer you to the online application, which does act up on occasion. So, be ready to prepare and fax the SS-4 application to the IRS and wait for them to fax and/or mail the results to you. This process can take anywhere from 3 days to 3 weeks.