Partnership income for entry date compensation?

[Guest esi-jht]

I posted this question at 401k forum but didn't get any replies. I'm hoping for better luck here. I searched the boards for this and found something that might help, but I'm hoping to get some further clarification. Plan document says that compensation is only counted from date of plan entry. No problem there. The problem is for the partners w/ K-1. How do I determine K-1 comp for only 6 months or 3 months of a Plan Year? Another post indicated that a partner (actually I think it was referencing a Sole Prop) has only one payroll period, 1/1-12/31. Does this mean that ALL of the compensation was earned on 12/31 so if the partner entered 7/1 or 10/1 his entire K-1 is entry date comp? Any thoughts are appreciated.

[Guest mjb]

See reg 1.401(k)-1(a)(6)(iii) for timing rules for self employeds.