The tax implications of a rooftop lease start with a simple rule: the money a cell tower company, solar developer, or billboard operator pays you is rental income, and the IRS taxes every dollar of it at your ordinary federal rate. From there, things get more layered. The same lease can trigger a 3.8% investment surtax, change how your building is depreciated, raise your local property tax bill, and shift who gets to claim the federal solar credit. A lump-sum buyout offer follows different rules again. What follows is what the tax code does to each piece.
How the Lease Payments Are Taxed
Most property owners report rooftop lease payments on Schedule E of Form 1040, which handles supplemental income from rental real estate.1Internal Revenue Service. Topic No. 414, Rental Income and Expenses That income folds into your overall taxable income and is taxed at the ordinary federal rates, which for 2026 run from 10% at the bottom to 37% at the top.
Signing bonuses and upfront payments are treated the same way. Any cash you receive for granting the right to use your roof is rental income in the year you receive it.1Internal Revenue Service. Topic No. 414, Rental Income and Expenses A $50,000 signing bonus from a cell tower company doesn’t get spread across the 20-year lease. It hits your return the year the check clears, which can push you into a higher bracket for that one year.
You can deduct ordinary and necessary expenses tied to the lease. Repair costs, insurance premiums covering the leased portion of the roof, legal fees for negotiating the agreement, and any property management costs all reduce your taxable rental income.1Internal Revenue Service. Topic No. 414, Rental Income and Expenses Keep the receipts. The gap between gross rent and net income after deductions is where the actual savings sit.
If the building is owned by a partnership, S corporation, or multi-member LLC, the income doesn’t go on Schedule E directly. These entities report on Form 8825, which then flows through to each partner or shareholder via Schedule K-1.2Internal Revenue Service. About Form 8825, Rental Real Estate Income and Expenses of a Partnership or an S Corporation Each owner picks up their share on their individual return and pays at their own rate.
Extra Taxes That Can Attach to the Income
Two federal taxes can show up on top of the ordinary rate. Most property owners will only ever face one of them, but it’s worth knowing which is which.
The 3.8% Net Investment Income Tax
The Net Investment Income Tax applies to rental income when your modified adjusted gross income exceeds $250,000 for married couples filing jointly, $200,000 for single filers, or $125,000 for married individuals filing separately.3Office of the Law Revision Counsel. 26 USC 1411 – Imposition of Tax The tax is calculated on whichever is smaller: your net investment income, or the amount by which your MAGI exceeds the threshold.
These thresholds are not indexed for inflation, so more taxpayers hit them each year. A property owner earning $180,000 from a day job who adds $40,000 in annual rooftop lease payments suddenly crosses the $200,000 single-filer threshold. The NIIT would then apply to $20,000 of that investment income, adding $760 in tax that catches people off guard.
Self-Employment Tax
Passive rental income is excluded from the 15.3% self-employment tax that funds Social Security and Medicare.4Internal Revenue Service. Topic No. 554, Self-Employment Tax Federal law specifically carves out rentals from real estate from the definition of self-employment income, so a straightforward lease where you collect monthly checks won’t trigger it.5Office of the Law Revision Counsel. 26 USC 1402 – Definitions
The exclusion disappears if you cross into providing substantial services for the tenant’s benefit. If you’re regularly maintaining their equipment, providing on-site security, or performing tasks that go beyond what a passive landlord does, the IRS can treat the activity as a business. That reclassifies the income onto Schedule C and subjects net earnings above $400 to the full 15.3% rate.4Internal Revenue Service. Topic No. 554, Self-Employment Tax A well-drafted lease keeps servicing responsibilities on the tenant so you stay on the passive side of that line.
Whether You Can Claim the 20% QBI Deduction
The qualified business income deduction under Section 199A lets eligible taxpayers deduct up to 20% of qualified business income from pass-through entities, including rental activities. The One Big Beautiful Bill Act made the deduction permanent starting in 2026. On paper, a property owner pulling in $60,000 a year from a lease could shelter $12,000 from federal income tax.
The catch is that the rental activity has to qualify as a trade or business. The IRS offers a safe harbor under Revenue Procedure 2019-38 that requires at least 250 hours of rental services per year (or in three of the past five years for established enterprises), with contemporaneous logs of what services were performed, when, and by whom.6Internal Revenue Service. IRS Finalizes Safe Harbor to Allow Rental Real Estate to Qualify as a Business for Qualified Business Income Deduction Separate books for the rental enterprise and a statement attached to your return are also required.
For most rooftop leases, 250 hours is a lot of activity when your main job is depositing checks. A diversified landlord who manages several rental properties and also leases rooftop space might aggregate the activities and clear the threshold. A single-building owner with one cell tower lease usually won’t. You can still claim the deduction outside the safe harbor if the activity otherwise qualifies as a trade or business, but that becomes a facts-and-circumstances judgment without the safe harbor’s certainty.
Depreciation, Cost Basis, and Property Taxes
Once part of your building starts generating lease income, you may need to allocate a share of the building’s cost basis to the rooftop area used commercially. Under MACRS, nonresidential commercial buildings are depreciated over 39 years and residential rental property over 27.5 years.7Internal Revenue Service. Publication 946 – How to Depreciate Property Adding a rooftop lease doesn’t change the recovery period, but you do need to track which portion of your depreciation deduction relates to the leased area.
The tenant’s equipment is a separate matter. Cell towers, antennas, solar panels, and billboard structures are typically owned by the tenant, who depreciates them on their own return. Since the One Big Beautiful Bill Act permanently reinstated 100% bonus depreciation for qualified property acquired after January 19, 2025, tenants installing new equipment in 2026 can generally write off the entire cost in the first year.8Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One Big Beautiful Bill Your concern as owner is not claiming depreciation on something the tenant owns, and vice versa. If you paid for structural reinforcement to support the equipment, that improvement is yours to depreciate over the building’s remaining recovery period.
Local property tax is the other cost people underestimate. Assessors in many jurisdictions treat permanent fixtures like cell towers, solar arrays, and antenna platforms as improvements that raise the building’s assessed value. Whether the equipment is classified as real property (assessed with the building) or personal property (assessed separately) depends on the lease term, how the equipment is attached, and whether it can be removed without damaging the structure. A rooftop solar array that adds $200,000 to your assessed value at a local mill rate of 2% means an extra $4,000 in annual property taxes, straight out of your lease revenue if the tenant isn’t on the hook for it. Many standard cell tower and solar leases include a clause requiring the tenant to reimburse the owner for any tax increase caused by the installation. If yours doesn’t, you’re absorbing a cost that grows as valuations get updated.
Who Claims the Solar Tax Credit
The federal energy credit under Section 48 goes to whoever owns the energy system and can depreciate it.9Office of the Law Revision Counsel. 26 USC 48 – Energy Credit If you lease your roof to a solar developer who installs and owns the panels, the developer claims the credit, not you. The same holds under a power purchase agreement, where you buy the electricity at a discount but don’t own the hardware.
The credit is worth 6% of the system’s cost at the base rate. Projects that generate less than one megawatt, or meet prevailing wage and registered apprenticeship requirements, qualify for a five-times multiplier that lifts the credit to 30%.9Office of the Law Revision Counsel. 26 USC 48 – Energy Credit Most rooftop installations fall under the one-megawatt threshold, so the 30% rate is common. It still belongs to whoever owns the panels.
If you want the credit for yourself, you have to purchase and own the system outright: front the installation cost, claim 30% against your federal tax liability, and either use the electricity or sell it. Some owners find that math better than a lease, especially with 100% bonus depreciation now available on the equipment. Others prefer the guaranteed income of a lease without the capital outlay and maintenance risk. Whoever owns the asset needs to be unambiguous in the contract; the IRS looks at who bears the economic risk and controls the equipment, not just whose name is on the paperwork.
Timing matters if you’re deciding now. The One Big Beautiful Bill Act accelerated the phaseout of clean electricity investment credits for solar and wind. The credit will no longer be available for solar facilities placed in service after December 31, 2027, though projects that begin construction within 12 months of the OBBBA’s enactment may still qualify. A developer approaching you about a lease is working against that clock, and it may show up in the terms they offer.
How a Lease Buyout Is Taxed
Cell tower companies and infrastructure investors increasingly offer lump-sum payments to buy out the remaining term of a rooftop lease. Instead of $2,000 a month for the next 20 years, you might get one offer of $300,000. The tax treatment is fundamentally different from ordinary lease income.
A buyout payment is generally treated as a sale of a property interest and taxed at long-term capital gains rates rather than ordinary rates. For 2026, long-term capital gains are taxed at 0%, 15%, or 20% depending on your taxable income. A single filer with taxable income above $545,500 pays the 20% rate; those below roughly $49,450 pay nothing. Compared to ordinary rates that reach 37%, the difference is significant.
The trap is bracket-stacking. A large lump sum in a single year can push you into a higher capital gains bracket and also trigger the 3.8% NIIT on top. A property owner who normally earns $150,000 and receives a $400,000 buyout has a MAGI well above the NIIT threshold, adding the surtax to most of the gain.
There is one potential escape. If you reinvest the proceeds into other investment real property, you may be able to defer the capital gains tax through a Section 1031 like-kind exchange, which allows tax-free exchanges of real property held for productive use in business or investment as long as you follow the strict identification and closing timelines.10Office of the Law Revision Counsel. 26 USC 1031 – Exchange of Real Property Held for Productive Use or Investment Whether a specific buyout qualifies depends on how the deal is structured. A sale of an easement interest in real property is more likely to qualify than a simple termination payment, which the IRS has historically treated as advance rental income rather than a property disposition.