What can a Solo 401k invest in?
Your Solo 401k is designed to give the widest range of investment options as allowed by law.
In the plan documents
Your plan documents state that you can direct the investments of your 401k
- As Participant in the 401k: Defined Contribution Adoption Agreement, L4
- As Trustee of the 401k: Defined Contribution Trust Document, 4.2
The plan documents don't comprehensively list or limit what you can invest in.
Self-directed with checkbook control
Since your 401k with Sense Financial is established as self-directed with checkbook control, you can invest in a wide range of investment options.
Your 401k is structured so that no custodian is needed, so you are not restricted to what a custodian offers as potential investments. Some examples of what your 401k can invest in:
- Real estate
- Mortgage notes
- Traditional assets, such as stocks, bonds, mutual funds
Brokerage account for Solo 401k
Prohibited transactions
Investments are limited by the IRS prohibited transaction rules, e.g. investments cannot be self-dealing.
Understanding prohibited transactions

