If the corporation's principal business, office or agency is located in the United States, file Form 1120-L at the following address: Department of the Treasury Internal Revenue Service Center Ogden, UT 84201-0012 If the corporation's principal business, office or agency is located in a foreign country or a U.S. possession, file Form 1120-L at the following address: Internal Revenue Service Center P.O. Box 409101 Ogden, UT 84409
