i probably am not understanding it/explaining it well enough. pretty much it was that if i were to start a cash balance plan this year, theres a limited maximum i could put into a solo 401k. However, i already contributed the max employer/employee into my solo 401k this year. so i asked him if i could remove what i already contributed into my solo 401k to be able to do a cash balance plan this year. he said it is possible to somehow change some of the solo 401k contributions to after-tax by changing/redoing a custom solo 401k plan?, so i don't go over the limit per cash balance plan? not sure if that helped... but thank you for your response