Related Party Leases: Section 482, Section 267, and Penalties

A lease between a business and its owner (or between two entities under common control) is taxed as if the parties were strangers, and the related party lease tax rules exist to enforce that fiction. Rent has to sit at fair market value, the lease has to be in writing before payments begin, deduction timing has to account for a matching rule that unrelated parties never worry about, and net rental income gets reclassified as non-passive when you materially participate in the tenant’s business. Miss any of these, and the IRS has statutory authority to rewrite the economics of the arrangement, disallow deductions, impute income, and stack accuracy-related penalties on top of the tax bill.¹

Who the Rules Treat as Related

Section 267(b) defines “related party” broadly. The most common trigger for a small business owner is an individual who owns, directly or indirectly, more than 50% of a corporation’s stock. A chain of entities doesn’t break the relationship; indirect ownership counts.²

Family is automatic. Spouses, parents, grandparents, children, grandchildren, and siblings (including half-siblings) are related parties by statute. A lease between a father’s LLC and his daughter’s S-corporation falls inside the rules whether the parties think of themselves that way or not.

Other structures the statute catches:

A corporation and a partnership where the same persons own more than 50% of each.
Two S-corporations, or an S-corp and a C-corp, under more than 50% common ownership.
Relationships involving trusts, including a grantor and trustee, two trusts sharing a grantor, or a trust and a corporation the trust controls.
A person and a tax-exempt organization they control.

The classic arrangement is an operating S-corp leasing its main location from a separate LLC owned by the same principals. Splitting real estate from operations is a legitimate liability strategy, but the rent payments are money moving between the owner’s own pockets, and every term has to hold up as if it didn’t.

Arm’s Length Pricing and Section 482

The controlling question for every related party lease is whether two strangers would agree to these terms. Section 482 gives the IRS authority to reallocate income, deductions, credits, or allowances between entities controlled by the same interests whenever the arrangement doesn’t clearly reflect income.¹ The implementing regulation states the purpose directly: put controlled taxpayers on the same footing as uncontrolled ones by determining what true taxable income would have been at arm’s length.³ The rule is not limited to cross-border transfer pricing. It reaches the dentist’s S-corp paying rent to the dentist’s personal LLC.

Rent Set Too High

When the tenant pays above market, the IRS can disallow the excess deduction and reclassify those payments as a constructive dividend to the owner-landlord.⁴ In a C-corporation setting, that means corporate tax on the disallowed amount plus individual tax on the dividend. Two tax bills on the same dollars.

Rent Set Too Low

Below-market rent is not a workaround. The IRS can impute additional rental income to the landlord for what should have been charged, even though no cash changed hands. The tenant gets no corresponding larger deduction because no larger payment was actually made. Rent set close to zero also invites the argument that no real lease exists at all.

The Deduction Timing Rule Under Section 267

Even at a perfect arm’s length rate, Section 267(a)(2) can delay the tenant’s deduction when the parties use different accounting methods. If the tenant is on the accrual method and the landlord is on the cash method, the tenant cannot deduct accrued rent until the landlord actually includes the payment in income.²

How it plays out: an accrual-basis S-corp books December rent as an expense in Year 1, but the cash-basis LLC receives the check in January of Year 2. Between strangers, the tenant deducts in Year 1. Between related parties, the deduction moves to Year 2, matching the year the landlord reports income.

The fix is unglamorous. Pay December rent before year-end, or put both entities on the same accounting method. Plenty of otherwise well-structured leases lose a year of deductions because payment slid a few days.

The Self-Rental Rule

This is the provision that catches owners who priced the lease correctly and documented it well and still end up with a worse tax result than they expected. Under Treasury Regulation 1.469-2(f)(6), when you rent property to a business in which you materially participate, net rental income from that property is reclassified as non-passive.⁵ IRS Publication 925 confirms the treatment.⁶

Rental activities are otherwise passive by default, regardless of hours spent.⁷ The self-rental rule breaks the symmetry in a way that favors the government. Net income from the self-rented property is pulled out of the passive bucket and can no longer be sheltered by passive losses from other activities. A net loss on the same property, however, stays passive. Income out, losses stuck.

A surgeon who owns her medical practice as an S-corp and leases the office building from her personal LLC illustrates it plainly. She materially participates in the practice. The LLC collects $120,000 in annual rent and has $90,000 in expenses, leaving $30,000 of net rental income. That $30,000 is non-passive. She cannot use it to absorb passive losses from a separate rental she owns. If the building instead ran a loss, the loss would remain passive and could only offset passive income.

The rule exists to shut down the obvious workaround: setting a high rent on self-occupied property to manufacture passive income and soak up passive losses from unrelated investments. Real estate professionals get out of it, but the bar is high. You need more than half of your total working hours in real property businesses where you materially participate, and more than 750 hours annually.⁷ An owner spending most of the year running an operating business will not qualify.

Documentation That Has to Exist Before Rent Starts

Pricing right is half the job. Proving you priced right is the other half. Without contemporaneous records, the IRS can treat periodic payments as constructive dividends or capital contributions and disallow the tenant’s rental deduction entirely. Assembling documentation after an audit notice arrives is too late.

A Real Lease Agreement

The lease has to be written, signed, and read like a lease between strangers. Term, payment amount and schedule, renewal options, maintenance responsibility, and allocation of property taxes, insurance, and common area costs all belong in the document. Whatever cost-allocation structure you adopt should match how comparable properties in the same market are leased, not a bespoke arrangement that happens to shift tax benefits between the two entities. Standard commercial provisions matter too: late payment penalties, default remedies, and assignment restrictions. Their absence signals that the parties never treated the arrangement as a real transaction.

Evidence of Fair Market Value

The single most important piece of the file is proof of how you arrived at the rate. The preferred method under the Section 482 regulations is comparison to similar leases between unrelated parties in the same market. Gather three to five comparable leases executed around the same time, and adjust for differences in square footage, location, condition, and lease structure.

For unique properties, specialized buildings, or high-value real estate, hire an independent appraiser and get a written report. The appraisal is external, methodical, and hard to dismiss. It costs a fraction of what a Section 482 adjustment costs.

What Penalties Look Like When Pricing Is Off

The IRS does more than correct the math. It layers penalties that can push the total well above the underlying tax.

Recharacterization

If the tenant paid $15,000 a month against a market rate of $10,000, the $5,000 monthly excess ($60,000 annually) gets disallowed. For C-corporations, that amount is typically reclassified as a constructive dividend. The corporation loses the deduction and pays corporate tax on the additional income; the owner pays individual tax on the dividend. Same dollars, two tax bills.

Accuracy-Related Penalties

Section 6662 adds a 20% penalty on any underpayment tied to a substantial valuation misstatement. For Section 482 transactions, a substantial misstatement occurs when the claimed price is 200% or more, or 50% or less, of the correct arm’s length price. It is also triggered when the net Section 482 adjustment exceeds the lesser of $5,000,000 or 10% of the taxpayer’s gross receipts.⁸

The penalty doubles to 40% for a gross valuation misstatement, which hits when the claimed price is 400% or more, or 25% or less, of the correct amount. Those thresholds are easier to cross than they sound. A property with a $3,000 monthly fair market rent leased to a related tenant at $9,500 clears the 300% line, and a nominal rent set to shelter operating income approaches the lower bound.

What It Actually Costs

Add the original tax due, interest running from the date the return was filed, and a 20% or 40% penalty on top, and the total commonly reaches two or three times the underlying tax. An independent appraisal, a properly drafted lease, and a market comparable file cost a small fraction of that. If you’re setting up a related party lease this year, spend the money on the documentation now, and revisit the rate whenever the market shifts or the lease renews.

1
Office of the Law Revision Counsel. 26 USC 482 – Allocation of Income and Deductions Among Taxpayers
2
Office of the Law Revision Counsel. 26 USC 267 – Losses, Expenses, and Interest With Respect to Transactions Between Related Taxpayers
3
eCFR. 26 CFR 1.482-1 – Allocation of Income and Deductions Among Taxpayers
4
Internal Revenue Service. Topic No. 404 – Dividends and Other Corporate Distributions
5
eCFR. 26 CFR 1.469-2 – Passive Activity Loss
6
Internal Revenue Service. Publication 925 (2025) – Passive Activity and At-Risk Rules
7
Office of the Law Revision Counsel. 26 U.S. Code 469 – Passive Activity Losses and Credits Limited
8
Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments