Proposed regulations under section 4980F of the Code provide guidance relating to a plan amendment that is permitted to be effective before the plan amendment’s applicable amendment date. The regulations would also reflect certain amendments made to section 4980F by the Pension Protection Act of 2006, Public Law 109-280 (120 Stat. 780). A public hearing is scheduled for July 10, 2008.

Weighted average interest rate update; corporate bond indices; 30-year Treasury securities; segment rates. This notice contains updates for the corporate bond weighted average interest rate for plan years beginning in April 2008; the 24-month average segment rates; the funding transitional segment rates applicable for April 2008; and the minimum present value transitional rates for March 2008.