Can rental income support a solo 401(k) contribution?

The direct answer

Ordinary investment rental income generally is not self-employment earned income for retirement plan purposes. A property-related operating business may have different facts. Review the activity and qualifying compensation rather than treating every Schedule E profit as plan income.

A practical example

Illustrative example, not a client result: An investor has rental cash flow but no wages or qualifying self-employment earnings. Cash availability alone does not establish eligibility.

Compare total plan cost with sustainable funding

A contribution target is meaningful only when the employer can meet the actual plan obligations. Review employee eligibility, related businesses, plan compensation and contributions already made elsewhere. Ask the administrator to show the owner benefit and the full staff and administration cost. The decision should fit expected cash flow across several years, not just an isolated deduction estimate.

Put the answer into your own tax file

Start by identifying the taxpayer, the tax year and the actual transaction. Then connect the transaction to the original documents before choosing a return line or moving money between accounts. A payment description can be useful evidence, but it cannot replace the underlying facts.

The records to review for this topic are: Employee census, compensation, ownership across companies, existing plans and a multi-year cash forecast.

For the example above, write down the decision that needs to be made, the missing information and the person responsible for supplying it. Keep the business, payroll, property and personal return teams aligned when more than one set of records is affected.

Questions to resolve before implementation