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Leasehold improvement depreciation: the life, the formula, and why the lease term is not the answer

Leasehold improvements depreciate over 15 or 39 years, not the lease term. The recovery periods, the formula, and how ASC 842 differs.

Emma Sukenik8 min read
Lease accounting — Leasehold improvement depreciation: the life, the formula, and why the lease term is not the answer

Leasehold improvement depreciation is the process of recovering the cost of a buildout over a defined life, either for tax purposes under MACRS or for book purposes under GAAP. The life is determined by how the improvement is classified, not by the length of the lease, which is where most of the confusion, and most of the money, sits.

What is the depreciation life of leasehold improvements?

ClassificationGDS recovery periodMethodConvention
Qualified improvement property15 yearsStraight line, requiredHalf-year, or mid-quarter if triggered
Nonresidential real property39 yearsStraight line onlyMid-month
Residential rental property27.5 yearsStraight line onlyMid-month
Other 15-year property (not QIP)15 years150% declining balance, then straight lineHalf-year, or mid-quarter if triggered

What counts as qualified improvement property?

Qualified improvement property is an interior improvement to an existing nonresidential building, generally excluding enlargements, elevators and escalators, and internal structural framework. The distinction is worth pricing out: a $900,000 buildout classified as QIP recovers $60,000 a year over 15 years; classified as nonresidential real property, it recovers $23,077 a year over 39. Same construction, same invoices, a difference of roughly $37,000 in annual deduction.

Why the lease term is not the depreciation life

For tax purposes, the lease term does not set the recovery period. A ten-year lease with a $900,000 QIP buildout still recovers over 15 years under MACRS. Book purposes differ: GAAP generally depreciates over the shorter of useful life or the remaining lease term, so the same buildout can sit on a 15-year tax schedule and a 10-year book schedule at once, creating a deferred tax difference.

Where bonus depreciation currently sits

Under the One Big Beautiful Bill Act, there is a permanent 100% additional first-year depreciation deduction for qualified property acquired after 19 January 2025, with elections available to claim 40% or 60% for certain longer-period property. Because QIP is 15-year property, it sits inside the class eligible for this deduction, while 39-year nonresidential real property does not, making the classification the difference between recovering the cost immediately and recovering it across four decades.

One buildout, three schedules

Tax depreciationBook depreciationROU asset under ASC 842
What it measuresCost recovery allowed by the tax codeCost allocation over economic benefitThe right to use the leased space
The assetThe leasehold improvementThe leasehold improvementThe lease, not the improvement
Life used15 years for QIP, 39 for nonresidential real propertyShorter of useful life or remaining lease termThe lease term

The leasehold improvement is not part of the right-of-use asset. Keeping these reconciled is ordinary lease accounting work, and it goes wrong when the lease data and the fixed asset register are maintained by teams that never compare notes.

Frequently asked questions

Can you depreciate leasehold improvements over the lease term?

For book purposes, generally yes, over the shorter of useful life or the remaining lease term. For tax purposes under MACRS, no. The recovery period comes from the property’s classification, 15 years for QIP or 39 for nonresidential real property, regardless of lease length.

What is the difference between depreciation and amortization of a right-of-use asset?

Depreciation recovers the cost of an asset you own, such as a leasehold improvement. Amortization of a right-of-use asset allocates the cost of the right to use leased space over the lease term. A buildout in leased space produces both, on separate schedules.

Do leasehold improvements qualify for bonus depreciation?

Improvements classified as qualified improvement property are 15-year property and fall within the class eligible for the additional first-year deduction, currently a permanent 100% for property acquired after 19 January 2025. Nonresidential real property at 39 years does not qualify.

What happens to leasehold improvements when a lease ends early?

The remaining net book value generally has to be addressed at termination or abandonment, and the treatment differs between book and tax, which is why knowing what is still on the books at that location matters before a remodel or consolidation.

Emma Sukenik

Emma Sukenik is REAL’s Director of Business Development, focused on how enterprises recover spend across tax, lease obligations, and CAM reconciliations.

Director of Business Development, REAL

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