What is the K-1 preparer's reason for not making the entries in boxes 13 and 14? To make any contribution to the 401(k) through a partnership you must have income from self-employment reported on your tax return and pay the associated self-employment taxes. If you have no self employment income, any contribution to the 401(k) is an excess contribution. Excess contributions can jeopardize the qualification of the entire 401(k) plan.
If you truly received income from the plan that qualifies as self-employment income and the K-1 preparer refuses to properly prepare the K-1, about all I can suggest is to make the necessary box 13 and box 14 entries, mail your tax return with an explanation statement regarding these missing entries on the Schedule K-1 and let the IRS sort it out, hopefully in your favor.
