Lease incentive accounting for tenants and landlords runs on two tracks that don’t line up. Under ASC 842, both sides spread the value of an incentive over the full lease term on their financial statements. The IRS takes a different view: a cash incentive is generally taxable income to the tenant in the year received, while the landlord amortizes or depreciates its outlay over time. That split creates a timing gap that has to be tracked deliberately from lease inception through any modification or early exit.
What Counts as a Lease Incentive
A lease incentive is anything of economic value the landlord gives the tenant to sign. Three forms show up most often. A tenant improvement allowance (TIA) provides funds to build out or customize the space, and it is usually the largest negotiating point after base rent. A free-rent period waives cash rent for several months, typically at the start of the term, while the economic value of those months still counts toward total lease consideration. Direct cash payments cover things like relocation costs or penalties owed on a prior lease, and they generally come with fewer strings than a TIA.
Tenant Book Treatment Under ASC 842
Under ASC 842, an incentive is not income when received. It reduces the total cost of the lease, which is spread over the term. At commencement, the tenant measures the right-of-use (ROU) asset by taking the initial lease liability, adding any payments already made, subtracting incentives received, and adding initial direct costs like legal fees to negotiate the lease.1FASB. ASU 2016-02 Leases Topic 842
The effect is straightforward. Incentives shrink both the ROU asset and the lease liability on day one, which lowers the periodic lease expense over the term. For an operating lease, that expense hits the income statement on a straight-line basis. A $10,000 incentive on a ten-year lease lowers annual lease cost by $1,000 rather than producing a one-time windfall.1FASB. ASU 2016-02 Leases Topic 842
Who Owns the Improvements Matters
TIAs need an extra step: identify who owns the improvements. If the tenant owns them, the tenant capitalizes the full build-out cost as a fixed asset in property, plant, and equipment and depreciates it separately. The TIA cash still reduces the ROU asset, so lease expense drops, and depreciation of the improvements appears as its own line. Together, those two effects reflect the economics of the deal.
If the landlord retains ownership, the tenant typically records no fixed asset for the improvements. The TIA simply folds into the ROU asset reduction. That changes the depreciation schedule and the balance sheet presentation even though total expense over the lease term ends up similar.
Free-Rent Periods Are Not Zero-Expense Months
A common misread is that free-rent months carry no lease expense. Under ASC 842, the total rent obligation, including the free months, is leveled across the entire term. On a five-year lease with two months free and 58 months at $10,000, the straight-line cost is $580,000 over 60 months, or $9,667 per month. That amount hits every month, including the rent-free ones.1FASB. ASU 2016-02 Leases Topic 842
Landlord Book Treatment
Landlords treat the cost of lease incentives as a reduction of rental revenue rather than a standalone expense. Under ASC 842, both cash incentives and the economic value of free-rent periods reduce rental income over the lease term on a straight-line basis. A $100,000 cash incentive on a ten-year lease trims reported rental revenue by $10,000 per year.1FASB. ASU 2016-02 Leases Topic 842
When the landlord funds a TIA and keeps ownership of the improvements, the cost is capitalized as part of the building or leasehold improvement asset and depreciated over its useful life. That is a real asset on the books, so the incentive-reduction accounting above does not apply to that portion.
When the tenant owns the TIA-funded improvements, the landlord has effectively handed over cash. The landlord records the TIA payment as a deferred incentive and amortizes it as a reduction of rental income over the lease term, the same way it would treat any other cash incentive.
Tenant Tax Treatment
This is where the rules split. For tax purposes, a tenant receiving a cash lease incentive, including a TIA paid in cash, generally recognizes the full amount as ordinary income in the year received. The IRS does not let the tenant spread that income over the lease term the way book accounting does. A $500,000 TIA on a ten-year lease hits the tax return all at once in year one.
The mismatch is baked in. The books show $50,000 per year of reduced lease expense, while the tax return shows $500,000 of income up front, offset over time by depreciation deductions on the improvements when the tenant owns them. This book-tax difference is routine in commercial leasing but regularly catches first-time tenants off guard.
The Section 110 Exclusion for Retail Tenants
Section 110 of the Internal Revenue Code provides a narrow safe harbor that lets certain tenants exclude a TIA from gross income entirely. All of the following must be true:
- The leased property is used in the tenant’s business of selling goods or services to the general public.
- The lease term is 15 years or less.
- The improvements qualify as nonresidential real property that reverts to the landlord at the end of the lease.
- The excluded amount does not exceed what the tenant actually spent on the build-out.
The retail-use requirement is the biggest limitation. Office tenants, warehouse operators, and industrial users do not qualify, no matter how short the lease or how clearly the improvements revert.2Office of the Law Revision Counsel. 26 USC 110 – Qualified Lessee Construction Allowances for Short-Term Leases
There is a trade-off. If you use the Section 110 exclusion, you cannot claim depreciation on the portion of improvements funded by the TIA. You avoided the income, so you lose the corresponding deductions. When the exclusion applies, the landlord treats the improvements as its own nonresidential real property for depreciation purposes.2Office of the Law Revision Counsel. 26 USC 110 – Qualified Lessee Construction Allowances for Short-Term Leases
Depreciating the Improvements
When the tenant treats a TIA as taxable income and owns the resulting improvements, those improvements become depreciable assets. The recovery period depends on what was built. Interior improvements to nonresidential buildings placed in service after 2017 generally qualify as qualified improvement property (QIP) with a 15-year recovery period under MACRS.3Internal Revenue Service. Publication 946 – How To Depreciate Property Structural components of the building itself, such as exterior walls or the roof, follow the standard 39-year recovery period for nonresidential real property.4Office of the Law Revision Counsel. 26 USC 168 – Accelerated Cost Recovery System
The gap between 15-year QIP and 39-year building components is significant. A tenant capitalizing $500,000 in qualifying interior improvements recovers that cost over 15 years rather than 39, accelerating the deduction and partially offsetting the upfront income hit from the TIA. QIP may also be eligible for bonus depreciation, though the available percentage has moved with recent legislation and should be confirmed with a tax advisor for the year the property is placed in service.
Landlord Tax Treatment
A landlord who makes a cash incentive payment deducts that cost by amortizing it over the lease term. The amortization reduces taxable rental income each year, which generally lines up with the financial accounting treatment.
When the landlord pays for and retains ownership of TIA-funded improvements, the costs are capitalized into the building’s depreciable basis. Interior improvements that qualify as QIP follow the 15-year recovery period, and structural work falls under the 39-year schedule for nonresidential real property.4Office of the Law Revision Counsel. 26 USC 168 – Accelerated Cost Recovery System Depreciation runs on its own schedule regardless of the lease term, so a landlord depreciating over 15 or 39 years on a seven-year lease still has remaining basis after the tenant leaves.
Early Termination
An early exit forces both sides to clean up their balance sheets. For the tenant under ASC 842, the remaining ROU asset and lease liability come off the books. Any difference between them, including the unamortized portion of incentives baked into the ROU asset, flows through the income statement as a gain or loss. A large TIA that was only partially amortized against the ROU asset can produce a noticeable book gain on termination.
Landlords face the mirror image. Any unamortized deferred incentive balance being spread against rental revenue is written off. For tax purposes, the landlord can generally deduct the remaining unamortized incentive cost in the year of termination as a loss on the abandoned lease arrangement. Separately depreciated building improvements continue on their original MACRS schedule regardless of lease status, since those assets attach to the building rather than the tenant.
Managing the Book-Tax Gap
The timing difference is easy to describe and harder to track. Financial statements spread the incentive evenly across the lease term. The tax return front-loads the income and then gives back deductions through depreciation over 15 or 39 years. That mismatch creates a deferred tax asset on the tenant’s balance sheet in year one, which reverses gradually as depreciation accumulates.
Take the $500,000 TIA on a ten-year lease again. The books show $50,000 per year of reduced lease expense. The tax return shows $500,000 of income in year one, then roughly $33,333 per year of depreciation if the improvements qualify as 15-year QIP. The cumulative effect swings from a large unfavorable difference in year one to a smaller favorable difference in later years. Anyone responsible for the tax provision needs to model this at lease inception and update the schedule if the lease is modified or terminated early.
Landlords carry a smaller version of the same burden. Book accounting spreads the incentive cost against rental income evenly, while tax depreciation on owned improvements follows MACRS schedules that front-load deductions. The temporary difference runs in the opposite direction from the tenant’s, and it needs the same diligent tracking through modifications and terminations.