For a Form 5500-EZ for a solo 401(k) that is required to report, and that will be filed about 2 months late (the taxpayer's personal return had a valid 6 month extension), are there any options for completely waiving any late fees? Or is using Form 14704 and coughing up the $500 the best one can do?
There are no other delinquent returns outstanding and this is the only return for this solo 401(k) that has ever been filed late.