How can I get a copy of my organization's exemption letter? You can download copies of original determination letters (issued January 1, 2014 and later) using our on-line search tool Tax Exempt Organization Search (TEOS). To otherwise receive a copy of the original determination letter, submit a request using Form 4506-A , or in a letter containing the name and employer identification number of the organization, along with the name, address and phone number of the requester. You can send your request by fax to 855-204-6184 , or by mail to: Internal Revenue Service Attn: Correspondence Unit P.O. Box 2508, Room 6-403 Cincinnati, OH 45201 It may take 60 days or longer to process your request. You may also request an affirmation letter. The affirmation letter serves the same purpose for grantors and contributors as the original determination letter. If you are a subordinate organization under group exemption ruling, contact the central organization that holds the group ruling to obtain confirmation of your status as a member of the group. See Publication 4573 PDF, Group Exemptions, for more information.