The organization must have an EIN before an application for exemption can be submitted. Download Form SS-4, Application for Employer Identification NumberPDF, and its related instructionsPDF to learn how to obtain an EIN. You may apply for an EIN on-line, by fax or by mail. Does the organization have an EIN? Yes | No Additional information Employer Identification Number Publication 1635, Understanding Your EINPDF How to Apply for an EIN