Key Takeaways

• A common, sensible structure — you own a building in one entity and lease it to your own operating business — triggers a special tax rule.
• Under the self-rental rule, if you materially participate in the tenant business, net rental income from that building is recharacterized as non-passive (active).
• But net rental losses from the same building remain passive. The treatment is deliberately asymmetric.
• The practical effect: the rent is taxed like active income and cannot be used to soak up passive losses from your other investments — while the building’s losses stay trapped on the passive side.
• The rule applies automatically, with no election. Planning around it — including a possible grouping election — is something to address before the lease is signed, not after.

The Self-Rental Trap: When You Lease a Building to Your Own Practice

The short answer

When you own a building in a separate entity and lease it to a business in which you materially participate — for example, a physician who owns a medical office building and rents it to their own professional corporation, the self-rental rule applies. Under that rule, net rental income from the building is recharacterized as non-passive (treated like active income), while net rental losses from the same building remain passive. The asymmetry is the trap: you cannot use the self-rental income to absorb passive losses from your other investments, but you also cannot use the building’s losses against your active income. The rule is automatic, and it should be planned around before the lease is structured.

The structure that triggers it

The setup is everywhere, and for good reason. A professional or business owner holds the real estate in one entity — typically an LLC, and the operating business in another. The operating business leases the building from the real estate entity and pays market rent. This separation is sound practice: it isolates the real estate from the operating business’s liabilities, it creates a clean rent stream, and it supports financing and eventual sale.

For a physician, the canonical version is a medical office building owned in an LLC and leased to the physician’s own professional corporation. For other professionals and business owners, it is the office, the clinic, the warehouse, or the storefront owned on one side and operated on the other.
The structure is correct. The tax surprise comes from a specific rule that attaches to it.

What the self-rental rule actually does

The self-rental rule lives in the passive activity loss regulations, and it exists to stop a particular maneuver: taxpayers generating “passive” rental income on purpose, just to soak up passive losses from other investments. To prevent that, the rule changes how self-rental income is treated.

Here is the mechanic, stated carefully because it is the part that is most often gotten wrong:

Net income is recharacterized as non-passive. If you materially participate in the tenant business, net rental income from the property you lease to it is treated as non-passive — active. That means it cannot be used as passive income to absorb passive losses from your other holdings.

Net losses stay passive. If the same property produces a net loss, that loss remains passive. It does not get recharacterized as active, so it cannot offset your wages or active business income.

That asymmetry is the whole point, and it runs in the taxpayer-unfavorable direction in both cases. Income that you might have wanted to be passive (to soak up other passive losses) is made active. Losses that you might have wanted to be active (to offset wages) stay passive. The rule applies automatically — there is no election to make and no form that turns it on; it simply governs once the facts fit.

Why this is the “physician building trap”

Walk through what it means for the physician who owns the building and leases it to their own practice.

Suppose the building, after mortgage interest, property taxes, insurance, and ordinary depreciation, throws off net rental income. Under the self-rental rule, because the physician materially participates in the practice that rents the building, that net rental income is non-passive. So the physician pays tax on the rent as active income, and — critically, cannot use that rent to absorb passive losses sitting in their other rental investments. The rent they hoped might be a convenient bucket of passive income is recharacterized away from that use.

Now suppose instead the building throws off a net loss in a given year — perhaps after a cost segregation study front-loads depreciation. That loss stays passive. So it cannot offset the physician’s W-2 or practice income, unless the physician independently satisfies the Real Estate Professional Status requirements (which, as covered elsewhere in this series, a full-time physician rarely can personally). The big depreciation loss the physician was counting on to shelter their clinical income is trapped on the passive side by the very self-rental structure that otherwise made sense.

This is why owning the building you practice in is not, by itself, the tax win it is sometimes sold as. The structure has real benefits — equity, control, asset protection, but the depreciation-against-W-2 story requires clearing the passive activity rules through some other door, not through the self-rental itself.

What can be done about it

The self-rental rule is not the end of the analysis; it is a constraint to plan around. A few of the levers, all of which are fact-specific and belong in a conversation with tax counsel and a CPA:

The grouping election. In some circumstances, where the rental and the operating business share the same ownership and form an appropriate economic unit, the activities can be grouped together for material-participation purposes. Grouping can help with the broader passive-activity analysis, but it does not switch off the recharacterization of self-rental net income — it is a partial tool, not a cure, and it has to be done correctly and deliberately.
Real Estate Professional Status, secured independently. If the household can satisfy the real-estate-professional tests (typically through a spouse), the building’s losses may become usable against active income through that route — but that is a separate qualification with its own requirements, not something the self-rental supplies.
Deliberate structuring of the lease and the entities. How the entities are owned, who materially participates where, and how the rent is set all affect the analysis. These are decisions to make before the lease is signed, because they are far harder to unwind later.
One narrow carve-out worth knowing: property rented incidental to a development activity can fall outside the self-rental recharacterization, but that is a specific situation for developers, not the typical owner-occupier, and it should not be assumed without advice.

The takeaway

Owning the building your business operates in is a sound structure for many reasons. But the self-rental rule means it does not, on its own, deliver the depreciation-against-active-income benefit that drives so much of this series. The rule taxes the rent as active while keeping the losses passive — an asymmetry that runs against the owner in both directions, and that applies automatically the moment the facts fit. The benefit can still be reached, but through the passive-activity doors covered elsewhere in this series, and only with the structure designed in advance. This is precisely the kind of rule that rewards getting advice before the lease is signed rather than discovering the treatment at tax time.

Work with Bay Legal

The self-rental rule catches business owners who did the sensible thing — owning their building in a separate entity, and then assumed the depreciation would shelter their income. It often doesn’t, not without additional structure. The time to plan around it is before the lease between your real estate entity and your operating business is signed. To structure it correctly with a California attorney, call Bay Legal at (650) 668-8000 or reach us through baylegal.com/contact.

We help business owners and professionals design the entity structure, the lease, and the ownership arrangement so the self-rental rule is accounted for rather than discovered later — coordinating with your CPA on the grouping and material-participation analysis. That work belongs up front. To start, reach a California attorney at (650) 668-8000 or baylegal.com/contact.

Because how the self-rental rule affects you depends entirely on your entities, your participation, and your broader tax picture, the useful next step is a conversation about your situation. Call (650) 668-8000.

Frequently Asked Questions

What is the self-rental rule?

It is a passive activity rule that applies when you rent property to a business in which you materially participate. Net rental income from that property is recharacterized as non-passive (active), while net rental losses remain passive. The rule prevents taxpayers from generating artificial passive income to absorb passive losses, and it applies automatically without any election.

What happens if I rent a building to my own business?

If you materially participate in the business, the self-rental rule treats the building’s net rental income as active income — so it cannot soak up passive losses from your other investments, while any net losses from the building stay passive and cannot offset your wages or active income. The treatment is deliberately asymmetric and runs against the owner in both directions.

Why is self-rental income treated as non-passive?

The rule exists to prevent taxpayers from manufacturing passive income. Without it, an owner could lease property to their own business specifically to create passive rental income and use it to free up otherwise-trapped passive losses. By recharacterizing self-rental net income as active, the rule closes that door.

Can I use depreciation losses from my own building against my W-2 income?

Not through the self-rental itself. Net losses from a building you lease to your own business remain passive, so they generally cannot offset W-2 or active income unless you independently qualify under the Real Estate Professional Status rules — which a full-time professional usually cannot do personally. This is a common and costly misunderstanding for owner-occupiers.

Does a grouping election fix the self-rental rule?

A grouping election can help with the broader material-participation analysis where the rental and the operating business share ownership and form an appropriate economic unit, but it does not switch off the recharacterization of self-rental net income. It is a partial tool, not a cure, and it must be made correctly. These decisions should be handled with qualified tax and legal advice.

This article is general legal information, not legal, tax, or financial advice. Reading this article and contacting Bay Legal, PC do not create an attorney-client relationship; that relationship is formed only by a signed engagement agreement. This article addresses California law and is written for California residents; other states differ. The law changes, and the figures and rules described here are current only as of drafting and may have changed since publication.