Tenant Improvement Amortization is the process of spreading the cost of improvements to leased space over time, rather than treating the full cost as an immediate expense. These improvements are typically made to customize commercial space for a specific tenant, such as new flooring, interior partitions, lighting, electrical upgrades, technology systems, shelving, or other build-out work.
The concept matters because tenant improvements are usually capital expenditures, not ordinary repairs, so the cost is recovered through amortization or depreciation over the applicable period.
Ownership depends on the lease terms, who pays for the work, and who retains the benefits and burdens of ownership. If the landlord pays for and owns the improvements, the landlord generally depreciates them. If the tenant pays for and owns them during the lease, the tenant generally capitalizes the cost and recovers it over time. Many leases provide that improvements remain with the building when the lease ends, unless the agreement allows removal without damaging the property.
A tenant improvement allowance is a common arrangement where the landlord provides a budget for build-out costs. The allowance may be paid directly to contractors or reimbursed to the tenant. Any costs above the allowance are often the tenant’s responsibility.
For book accounting, tenant improvements are commonly amortized over the shorter of the improvement’s useful life or the remaining lease term. For tax purposes, the result depends on the type of improvement, ownership, placed-in-service date, and whether the property qualifies for a specific recovery period.
Under current federal tax rules, many interior improvements to nonresidential real property may qualify as qualified improvement property (QIP), commonly recovered over 15 years if the statutory requirements are met. QIP generally excludes building enlargements, elevators or escalators, and internal structural framework changes.
The tax treatment of a tenant allowance depends heavily on structure. In some cases, the allowance may be treated as income to the tenant, with the tenant capitalizing and depreciating the related improvements. In other cases, especially where the landlord owns the improvements and the arrangement meets specific requirements, the allowance may be treated differently. The lease should clearly state ownership, payment mechanics, construction responsibilities, and what happens at termination.
Poor drafting is where tax and accounting people earn their coffee. Two leases can look commercially similar and produce different tax results because one sentence shifted ownership, reimbursement rights, or removal obligations.
Tenant Improvement Amortization (or tenant improvement depreciation) is a broad concept that refers to recovering the cost of improvements made to leased property over time. QIP is a specific federal tax category that applies only to certain interior improvements made to nonresidential buildings and that meet IRS requirements.
In other words, some tenant improvements may qualify as QIP, but not all tenant improvements are QIP. QIP is a subset of tenant improvements that receives special tax treatment, including a 15-year recovery period under MACRS and potential eligibility for bonus depreciation.
Leasehold improvements tax treatment changed after the Tax Cuts and Jobs Act and CARES Act, which replaced older categories such as qualified leasehold improvement property with QIP. The later One Big Beautiful Bill Act restored 100% bonus depreciation for many qualified assets acquired after January 19, 2025, making placed-in-service timing and eligibility especially important.
In some real estate dispositions, depreciation taken on improvements may also affect gain character, including potential Unrecaptured Section 1250 considerations. That issue is separate from the initial amortization period, but it can matter when a building or lease-related asset is sold.
Many qualifying interior improvements to nonresidential real property are depreciated over 15 years as QIP. For book purposes, companies often amortize improvements over the shorter of useful life or remaining lease term, depending on accounting policy and lease facts.
Sometimes. A tenant allowance may be taxable to the tenant if the tenant controls and owns the improvements. Different treatment may apply when the landlord owns the improvements or the arrangement satisfies specific tax requirements, so lease structure is critical.
If the tenant abandons improvements or loses their economic benefit at lease termination, the remaining unamortized balance may need to be written off for book purposes. Tax treatment depends on ownership, abandonment, removal rights, and applicable depreciation rules.
Yes, if the improvements qualify as QIP and meet the applicable acquisition and placed-in-service rules. Bonus Depreciation can allow accelerated first-year deductions, but eligibility depends on property type, timing, ownership, and statutory exclusions.
The transition consolidated older improvement categories into QIP, reducing reliance on prior labels such as qualified leasehold improvement property. For eligible improvements, QIP generally provides a clearer 15-year recovery framework and may support accelerated depreciation when bonus rules apply.
For more than four decades, Bennett Thrasher has provided businesses and individuals with strategic business guidance and solutions through professional tax, audit, advisory, and business process outsourcing services. Contact Trey Webb, partner in charge of Bennett Thrasher’s Real Estate and Hospitality Tax Group, or call us at 770.396.2200.
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