The lending of money or another extension of credit between a Solo k and a disqualified person. Now you know The Solo k is a powerhouse retirement and investment vehicle that offers a more convenient option for investing in real estate, precious metals, stocks and bonds, and much more. To know if a transaction is likely prohibited, simply determine all parties involved in a potential investment, identify any of those as disqualified persons, and ask this question: Will any of the listed disqualified persons or parties directly or indirectly benefit from the investment? The list of investment vehicles that cannot be housed inside an IRA or qualified plan should not be confused with the list of prohibited transactions that cannot be done with these accounts, such as lending yourself money from an IRA. However, many IRA custodians will prohibit the use of any type of derivative trading inside their accounts, except for covered call writing. Retirement Planning IRA. Those who wish to trade...