Sole Prop. w/ Sep and also participant in LLC plan where he is 1/3 par

[Guest cascigm]

Individual is a sole proprietor w/ a sep plan, this yr he became a 1/3 partner in an LLC. If the LLC establishes a plan my opinion is he is able to participate in that plan without any consideration given to the sep. He will continue to have income from both and wants to continue to fund his sep.

no affiliated service group exists.

Am I missing anything?