Sole proprietor with no employees, business started in 2018, plan effective in 2018. This is a takeover plan. Using made up numbers this is what has happened each year from 2018 - 2020: earned income = $100,000 and pension contribution = $99,000. In my mind that means that "plan compensation" is $1,000, which means that since there is no salary history prior to the plan effective date there are going to be a number of problems, not the least being the 415 limit since since 3 year average average comp is $1,000. Am I missing something here wrt plan comp and 415?