I am resurrecting this topic, so I can get some guidance. I maintain my own self employed 401k. I understand I will need to file 5500-ez when the plan gets over 250k. which happened in 2015. (the plan was established in 2012) I did not realize until last week I need to do that. I got the forms ready to do it as part of the 5500-EZ delinquent filer program. Should I need to the schedule sb - if so who does it. Do I need the schedule sb for each year since origin or only after it hit 250k.? Do I submit this along with 5500-ez. Any help on these questions much appreciated.