Real Estate Tax Calc
What a triple net lease shifts to the tenant
Under a triple net (NNN) lease, the tenant pays property taxes, building insurance, and maintenance costs in addition to rent. From a tax perspective, this means the landlord reports less gross rental income (no reimbursed expense income) and also deducts fewer expenses — the net effect is roughly a wash. In some NNN structures, the tenant pays the operating expenses directly and the landlord never touches them.
On Schedule E (or a business return), a NNN landlord reports only the base rent as income, without the gross-up for tenant-paid operating costs. This simplifies bookkeeping but does not change the fundamental tax treatment.
Depreciation, recapture, and basis
Depreciation of the building still applies exactly as it would for any commercial property — typically 39-year straight-line under MACRS. A cost segregation study can identify shorter-life components, accelerating deductions. All accumulated depreciation is subject to recapture at sale, regardless of the lease structure.
The NNN lease term often runs 10–20 years, and the creditworthiness of the tenant drives value. When you sell, the buyer is buying a yield, and the valuation can differ significantly from a traditional cap-rate analysis — but the tax gain calculation (amount realized minus adjusted basis) is the same.
The QBI deduction for NNN landlords
NNN properties have faced uncertainty under the qualified business income (QBI) deduction. The IRS safe harbor in Notice 2019-07 requires 250 hours of rental services per year, which triple net lessors rarely meet. However, the safe harbor is not the only way to qualify — many practitioners argue that NNN rental can still qualify as a trade or business under the general standard of Groetzinger if the investor is actively involved in managing tenants and property affairs.
The safe harbor also specifically excludes property leased under a triple net lease, so NNN owners who want the 20% QBI deduction generally must establish trade-or-business status on the facts rather than by ticking the safe-harbor box. Self-rental arrangements — where you NNN-lease a building to your own operating business — have a better footing, because the self-rental is treated as part of the commonly owned trade or business for QBI purposes. For a passive NNN investor with a single credit tenant on a 15-year lease, by contrast, qualifying is genuinely uncertain, and the deduction should not be assumed when underwriting after-tax yield.
Reporting tenant-paid expenses: watch the gross-up
How tenant-paid costs hit your return depends on who pays the vendor. If the tenant pays the property tax and insurance bills directly to the taxing authority and insurer, you never touch that money — you report only the base rent, and you take no deduction for expenses you did not pay. If instead the tenant reimburses you and you pay the vendors, the reimbursement is additional rental income and the payments are deductible expenses; you gross up both sides, and the net is a wash.
The economic result is identical, but the reported numbers differ, which matters for metrics keyed to gross receipts and for anyone reading your Schedule E. Confirm the payment mechanics in the lease before you assume a clean, low-income presentation — a lease that runs reimbursements through the landlord produces a much larger gross-income figure than a true "tenant-pays-directly" NNN.
A worked example: gross vs. NNN reporting
Imagine a building leased at a $120,000 annual base rent, with $22,000 of property taxes, $6,000 of insurance, and $8,000 of maintenance — $36,000 of "nets" — plus $18,000 of annual depreciation. Under a true NNN where the tenant pays those nets directly, you report $120,000 of rent, deduct $18,000 of depreciation, and show $102,000 of taxable income.
Under a gross lease at $156,000 (rent that bundles the same costs), you report $156,000 of income, deduct the $36,000 of operating expenses plus $18,000 depreciation, and arrive at the same $102,000. The taxable bottom line matches, but the NNN version has far lower gross income and fewer moving parts — simpler bookkeeping, fewer expense receipts, and less exposure to expense inflation, since rising taxes and insurance are the tenant's problem under NNN and the landlord's under a gross lease.
Is NNN income passive? Usually yes
For the passive activity loss rules, a triple net lease is still a rental activity, which is passive by default unless you qualify as a real estate professional who materially participates. So NNN losses (most often from depreciation exceeding net rent in early years, or after a cost segregation study) are generally subject to the same $25,000-allowance and $150,000-MAGI limits as any rental, and NNN income is passive income that can absorb other passive losses.
One important exception is the self-rental rule: if you NNN-lease property to a business in which you materially participate, net income from that self-rental is recharacterized as non-passive (so it cannot soak up your other passive losses), while a net loss stays passive. NNN income is also generally net investment income for the 3.8% NIIT unless it rises to a non-passive trade or business in which you materially participate — another reason the trade-or-business question matters beyond just QBI.
NNN as prime 1031 and DST replacement property
Triple net properties are among the most popular 1031 exchange replacement assets, precisely because they are low-management: an investor selling a hands-on apartment building can exchange into a single-tenant NNN property (a pharmacy, dollar store, or fast-food pad) and keep deferring gain while shedding day-to-day operations. The deferred gain and accumulated depreciation carry into the NNN building's basis, and recapture resurfaces only on an eventual non-exchange sale.
For investors who want NNN exposure without owning a whole building, a Delaware Statutory Trust (DST) holds institutional NNN assets and qualifies as replacement property for a 1031 exchange, letting you place exact dollar amounts to satisfy the exchange's equity and debt-replacement requirements. DSTs trade control for passivity — you cannot make management decisions — but they solve the timing pressure of finding suitable NNN replacement property within the 45-day identification window.
Cost segregation and bonus depreciation still apply
Even though the tenant bears operating costs, the landlord still owns and depreciates the building, so a cost segregation study can carve out shorter-life components (parking lots, signage, specialized electrical, landscaping) from the 39-year shell. With 100% bonus depreciation restored for qualified property placed in service after January 19, 2025, those 5-, 7-, and 15-year components can be expensed in year one, often creating a large first-year loss on an otherwise steady NNN asset.
That accelerated deduction is what turns a boring, fully-leased NNN building into a meaningful current-year tax shelter — subject, of course, to the passive-loss limits above. Remember the trade-off at sale: the Section 1245 components recaptured as ordinary income, and the building's unrecaptured Section 1250 gain capped at 25%. The lease structure does not change any of this depreciation or recapture machinery; it only changes who pays the taxes and insurance in the meantime.
State tax when the tenant and building are elsewhere
A NNN portfolio is easy to spread across states, and each building generally creates a filing obligation in its state. Rental income sourced to the property's state means a nonresident return there, with your home state giving a credit for taxes paid to avoid double taxation. A few states also impose gross-receipts or franchise-style taxes, and some do not conform to federal bonus depreciation — so the big first-year cost-segregation deduction you take federally may be partly added back at the state level and recovered over time instead.
For an out-of-state NNN owner, the compliance cost of multiple state returns is a real, recurring expense that should be weighed against the low operational burden the NNN structure otherwise provides. It rarely changes the decision, but it belongs in the after-tax yield calculation, especially for a portfolio spanning several states.
Frequently asked questions
Do I still depreciate a NNN property?
Yes. The lease structure doesn't affect depreciation. Commercial NNN buildings depreciate over 39 years using the mid-month convention.
Is NNN rental income subject to self-employment tax?
No. Rental income, including NNN rent, is not subject to self-employment tax.
Can I do a 1031 exchange on a NNN property?
Yes. NNN investment properties are held for investment and qualify as like-kind real property for 1031 exchange purposes.
Are tenant-paid property taxes taxable income to me?
It depends on who pays the vendor. If the tenant pays the taxing authority directly, you report neither the payment nor a deduction. If the tenant reimburses you and you pay the bill, the reimbursement is rental income and the payment is a deductible expense — a wash on net income but a larger gross-income figure.
Does NNN rental income qualify for the 20% QBI deduction?
Not automatically. The IRS rental safe harbor specifically excludes triple net leases, so a NNN owner must establish trade-or-business status on the facts. Self-rentals to your own operating business have a stronger basis than a passive single-tenant NNN investment.
Can I use a Delaware Statutory Trust to 1031 into NNN property?
Yes. A DST holding institutional NNN assets qualifies as like-kind replacement property, letting you defer gain and place precise equity and debt amounts without managing a building yourself — at the cost of giving up control over the property.
Is triple net lease income passive for tax purposes?
Generally yes — a NNN lease is still a rental activity, so it is passive unless you are a real estate professional who materially participates. The self-rental rule can recharacterize net income (but not losses) as non-passive when you lease to your own active business.
Can I take bonus depreciation on a triple net property?
Yes. As the owner you still depreciate the building, and a cost segregation study can reclassify shorter-life components that qualify for 100% bonus depreciation on property placed in service after January 19, 2025 — potentially creating a large first-year loss even on a fully-leased NNN asset, subject to the passive-loss limits.
Do I owe tax in the state where a NNN building is located?
Usually yes. Rental income is sourced to the property's state, so an out-of-state building generally requires a nonresident return there, with your home state crediting the tax paid to prevent double taxation.
Sources
- IRS Topic No. 409 — Capital Gains and Losses
- IRS Publication 544 — Sales and Other Dispositions of Assets
- IRS Publication 946 — How to Depreciate Property
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.