This document contains final regulations that provide rules relating to the disclosure of listed transactions and transactions of interest with respect to the generation-skipping transfer tax under section 6011 of the Internal Revenue Code (Code), conforming amendments under sections 6111 and 6112, and rules relating to the preparation and maintenance of lists with respect to reportable transactions under section 6112. The regulations affect taxpayers participating in listed transactions and transactions of interest and material advisors to such transactions. The final regulations also contain rules under section 6112 that affect material advisors to reportable transactions. These regulations provide guidance regarding the length of time a material advisor has to prepare the list that must be maintained after the list maintenance requirement first arises with respect to a reportable transaction. These regulations also clarify guidance regarding designation agreements.