After an application has been filed, a written request for expedited processing must be sent to the following address: Internal Revenue Service P.O. Box 2508 Room 6403 Cincinnati, OH 45201 Express mail or a delivery service written request for expedited processing must be sent to the following address: Internal Revenue Service 550 Main Street Room 6403 Cincinnati, OH 45202 You may fax your request to 855-204-6184.
