Ok, let's put aside the fact that why would anyone WANT both a SEP and 401k Plan for a moment...
I have a potential client who currently has a SEP plan. He is a sole proprietor. During 2009, he also became an S-Corp (so he will have both SE income and W-2 income) and now has one employee and wants to start a 401k Plan also (before the end of the year). (FYI - His SEP is a 5305 Model SEP.) I assume he can maintain both, but the million dollar question is, can he contribute to both the SEP and the 401k for 2009? I realize he will have a combined limit, but can it be done?
Thanks so much for all of your help in advance.