| Factor | Favors |
|---|---|
| Commercial loans to investors, developers, or businesses | Either |
| Residential mortgage lending to homeowners | LLC |
| Distressed note investing | LLC |
| High volume of notes in a riskier category | LLC |
| Occasional, passive lending in a lower-risk category | Trust |
| Low-cost, simple LLC state | LLC |
| High-cost, complex LLC state, low-risk lending | Trust |
Can either structure originate and hold private loans?
An IRA Trust, a Solo 401(k), and an IRA LLC all work as the lender of record for a promissory note, and all three give you checkbook control over the transaction. A Solo 401(k) is itself a trust-based structure, so everything said here about the IRA Trust applies equally to it. For a handful of occasional loans, the differences between these structures matter less than what kind of lending you're actually doing.
Does the type of lending change the risk profile?
This is the factor that matters most, and it's easy to overlook: the type of lending you're doing drives the risk profile more than the structure does. Commercial loans, to real estate investors, property developers, or businesses, tend to involve sophisticated counterparties, negotiated terms, and business-purpose collateral. These deals are comparatively low risk from a dispute standpoint, and a trust or Solo 401(k) is often perfectly adequate even at moderate volume.
Residential mortgage lending to homeowners is a different animal. Consumer lending is heavily regulated, and a documentation misstep, a missed disclosure, an improperly structured loan, can expose the lender to liability claims from the borrower, not just the usual risk of default. An LLC paired with an attorney or a professional note servicer who understands residential lending compliance is a strong combination here, since it both contains the liability and reduces the odds of the underlying mistake that creates it.
Distressed note investing, buying non-performing notes with the intent to work them out or foreclose, carries its own elevated risk profile. The reward can be attractive, but the path to that reward often runs through litigation, foreclosure, or a contentious workout, all situations where the liability protection of an LLC earns its keep.
Does volume make a difference?
Volume matters, but not because a trust and an LLC differ administratively; both have their own bank account, and both sign contracts in the entity's name. What changes with volume is exposure. A single commercial loan and ten commercial loans carry the same low risk per loan, but ten loans mean ten chances for something to go sideways. The same is true within any lending category: more residential loans mean more chances for a documentation dispute, and more distressed notes mean more chances for a foreclosure fight. Volume amplifies whatever risk category you're already in, so a high-volume lender in a lower-risk category can land in roughly the same place as a moderate-volume lender in a higher-risk one.
How does your home state factor into the decision?
State cost and complexity is a real input independent of the lending itself. Some states make LLC formation and annual maintenance simple and inexpensive, in which case forming the LLC upfront is a reasonable default even for lower-risk lending, since the downside of having formed it early is minimal. Other states carry higher franchise taxes or more involved annual filings. In one of those states, a trust or Solo 401(k) is often the more efficient starting point for lending that stays commercial and low volume, since it delivers the same checkbook control without the recurring cost.
What if my state is expensive, but liability exposure is still possible?
This is where state cost and lending risk pull in different directions, and it is a genuine judgment call rather than a formula. If residential lending or distressed notes are part of the plan, the protection an LLC provides can be worth the added state cost even in a more expensive state. If the lending is likely to stay commercial and comparatively low risk, the trust or Solo 401(k)'s lower cost usually wins out, and an LLC can always be added later if the strategy shifts.
Is there a wrong answer here?
Not really. All three structures work, and an investor who starts with a trust or Solo 401(k) for commercial lending and later adds an LLC when moving into residential or distressed notes is not undoing a mistake, just adapting the structure to a strategy that evolved. This lending-specific version of the decision draws on the same trust-versus-LLC framework that applies across every asset class, just narrowed to what private lending specifically requires.
Frequently Asked Questions
Can I switch from a trust or Solo 401(k) to an LLC later if my lending activity grows?
Yes, and the switch only applies going forward. Existing notes already originated through the trust or Solo 401(k) don't need to be restructured or reassigned; you simply route new loans through the LLC once it's formed. Many investors adopt this staged approach deliberately, starting simple and adding the LLC only once volume or risk profile actually calls for it.
Is residential mortgage lending really riskier than commercial lending?
Yes, from a liability standpoint, and the exposure isn't just about the borrower defaulting. Consumer protection laws in many states impose licensing, disclosure, or documentation requirements on residential lenders that never apply to commercial deals, and getting one of those wrong can create liability independent of whether the loan performs. That's the specific risk an LLC is built to contain.
Does distressed note investing change the calculus?
Yes, more than any other lending type. Buying non-performing notes often means initiating foreclosure or negotiating a workout with a borrower who may push back, and a contested foreclosure can draw in the entity of record as a defendant. That's a very different exposure than collecting scheduled payments on a performing note, and it's where an LLC's liability protection is worth having in place before a dispute starts, not after.
Can I run a trust or Solo 401(k) and an LLC at the same time?
Yes, though the mechanics differ slightly by structure. In an IRA, the trust and one or more LLCs sit in parallel, each owned directly by the IRA, with capital moving between them through the custodian. In a Solo 401(k), an LLC can instead be held inside the plan itself, giving the plan a dedicated liability bucket for higher-risk lending while the rest of the plan's assets stay in the Solo 401(k) trust directly. Either way, structure can be matched to the risk of each deal rather than forcing everything into the same entity.
Next Steps
An investor weighing a trust or Solo 401(k) against an LLC for a lending strategy can use the Plan Finder to walk through the decision.