Description: This panel discussion is from the 1991 Meeting of the Society of Actuaries, held June 3-5 in Colorado Springs. This panel discussion is designed for the experienced pension practitioner. The panelists, using numerical illustrations, discuss how to do calculations to prove nondiscrimination under proposed Internal Revenue Code regulation 401[a][4]. Discussion from participants is included. From the Record of Society of Actuaries Vol. 17, No. 3B.