Bulletin No. 2012-31 July 30, 2012

Notice 2012–50, page 121. 2012 marginal production rates. This notice announces that under section 613A(c)(6)(C) of the Code, the applicable percentage for purposes of determining percentage depletion on marginal properties for calendar year 2012 is 15 percent. The format of the notice is identical to the format of notices previously published on this issue.

EMPLOYEE PLANS

Notice 2012–47, page 98. 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 July 2012; the 24-month average segment rates; the funding transitional segment rates applicable for July 2012; and the minimum present value transitional rates for June 2012. However, the notice does not reflect changes to segment rates required under the Moving Ahead for Progress in the 21st Century Act (MAP-21).