If you are referring to a SOLO 401K then don't get the employee and the employer's maximum allowed contributions mixed up ... https://www.fool.com/retirement/plans/solo-401k/contribution-limits/
You are asking from TT Live, for which you paid extra. Please contact a rep.
https://ttlc.intuit.com/questions/4124827-how-do-i-connect-with-a-tax-expert-in-turbotax-live
