This document contains final and temporary regulations relating to the capitalization of costs under the simplified service cost method of the Income Tax Regulations and the simplified production method. The regulations affect taxpayers that use the simplified service cost method or the simplified production method for self- constructed assets that are produced on a routine and repetitive basis in the ordinary course of their businesses. The text of the temporary regulations also serves as the text of the proposed regulations set forth in the notice of proposed rulemaking on this subject in the Proposed Rules section in this issue of the Federal Register. The portions of this rule that are final regulations provide necessary cross-references to the temporary regulations.