We are dealing with a QPSC (qualified professional service corporation) aka in the code as a PSC (personal service corporation). It is a one person (age 65) C Corporation with an individual marginal tax rate of ~50% combined federal/state. It maintains a SEP-IRA for its one employee. SEP-IRA contributions are maxed out to $59,000 ($53,000 + $6,000 catchup).
I know a corporation can have a defined benefit plan (e.g., cash balance plan) and a 401(k) plan for its employees. A 65 year old individual is allowed to contribute $245,045 to a cash balance plan in 2016. That same individual is allowed to contribute $24,000 ($18000 + $6000 catch-up) to a 401K (defined contribution plan). That comes to a total of $269,045 of sheltered income. It is my understanding (I could be wrong) that the
401K plan can have a profit sharing component that can take the total 401K contribution to $59,000 ($18,000 + $6000 + $35,000). That would make the total contribution for both plans $304,045 of sheltered income.Can the corporation just keep the SEP-IRA with its $59K contribution or does it have to switch to a 401(k) with profit sharing?