
When is it necessary to revise a depreciation schedule due to asset improvements?
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A depreciation schedule must be revised when an improvement is made to a depreciable asset because, for tax purposes, the improvement is treated as a separate asset with its own recovery period and depreciation method. The key legal and procedural details are as follows:
1. Improvements vs. Repairs:
An improvement is an addition to or partial replacement of property that is a betterment, restoration, or adaptation to a new or different use. Improvements must be capitalized and depreciated, not deducted as a current expense.- In contrast, a repair that merely keeps property in ordinary efficient operating condition and does not materially add value or substantially prolong useful life is generally deductible as a current expense and does not require a change to the depreciation schedule of the underlying asset.
2. Capitalization and Separate Depreciation:
When you make an improvement to a depreciable asset, you must treat the improvement as a new, separate asset for depreciation purposes. The improvement is depreciated over its own applicable recovery period, using the appropriate depreciation method and convention, starting from the date the improvement is placed in service.- The original asset continues to be depreciated on its original schedule, unaffected by the improvement.
3. Determining the Recovery Period and Method:
The recovery period and depreciation method for the improvement are determined as if the improvement were placed in service at the same time as the improvement itself, not the original asset.- For example, if you add a new roof to a rental building, the cost of the new roof is depreciated as nonresidential real property (39 years) or residential rental property (27.5 years), depending on the type of building, using the straight-line method and the mid-month convention.
4. When to Revise the Depreciation Schedule:
You must revise your depreciation records in the tax year the improvement is placed in service. This means adding the improvement as a new asset to your depreciation schedule, with its own basis, placed-in-service date, recovery period, method, and convention.- The original asset’s depreciation schedule is not changed, except in rare cases where the improvement replaces a major component and the original component is retired or abandoned, in which case the basis of the original asset may be adjusted to reflect the retirement.
5. Recordkeeping and Reporting:
You must keep records that clearly identify the improvement, its cost, the date placed in service, and the method and period of depreciation.- The improvement is reported on Form 4562 in the year it is placed in service.
6. Legal Authority:
IRC § 168(i)(6) and related Treasury Regulations require that improvements to property be depreciated as if they were separate property placed in service at the time the improvement is made.- IRS Publication 946 and IRS Publication 535 both confirm that improvements must be capitalized and depreciated separately from the original asset.
Summary: You must revise your depreciation schedule when you make an improvement to a depreciable asset by adding the improvement as a new, separate asset with its own recovery period and depreciation method, starting from the date the improvement is placed in service. This ensures compliance with the capitalization and depreciation rules under the Internal Revenue Code and Treasury Regulations.
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