Solo 401(k) requirements

Having a solo 401(k) may require filing annual information returns with the Department of Labor.

Annual reporting may be necessary if plan assets exceed a set amount. For those with plans in 2006, an information return (IRS Form 5500-EZ) is required if plan assets of $100,000 or less at the end of every plan year beginning on or after January 1, 1994.

Starting for 2007 plans, however, no filing will be required unless plan assets exceed $250,000 as of the end of the plan year (without regard to plan balances in previous years).