Posted almost 5 years ago Solo 401k Expense Types an Paying Self-Directed Solo 401k Expenses Identifiable Costs - expenses in connection with establishing and administering the solo 401k plan, such as: Solo 401k setup costsAnnual solo 401k plan document maintenance feescomplianceFinancial ConsultingAuditsPaying identifiable costs: both solo 401k and personal or business funds can be used to pay identifiable costs. The drawback of using solo 401k funds instead of personal or business funds is that it reduces the amount of solo 401k funds available for placing investments. Solo 401k Investment Costs–for example, expenses in connection with alternative investments such as real estate including the following: Broker feesProperty taxesRepairs/Improvements InsuranceHOA dues Paying solo 401k investment costs: this type of fee is paid with solo 401k funds not personal or business funds. Expenses that Cannot be Paid Using Solo 401k Plan FundsTravel, Lodging, Boarding, car insurance, car payments, education, training, membership fees, and stock traders association fees, to name a few. To learn more about various solo 401k plan fees, click here.