This document contains final regulations regarding the application of the modified carryover basis rules of section 1022 of the Internal Revenue Code (Code). Specifically, the final regulations modify provisions of the Treasury Regulations involving basis rules by including a reference to section 1022 where appropriate. The regulations will affect property transferred from certain decedents who died in 2010. The regulations reflect changes to the law made by the Economic Growth and Tax Relief Reconciliation Act of 2001 and the Tax Relief, Unemployment Insurance Reauthorization, and Job Creation Act of 2010.