Can You Use Your Cost Segregation Deduction This Year?
Practical guidance for business owners and residential rental investors.
Move from the property report to the taxpayer return
Start with the owner and entity tax classification, then identify applicable basis, at-risk and passive-activity limitations. Other limits may apply after those tests. A partnership allocation, an S corporation loss and a directly owned rental do not all begin at the same step. The study determines asset classifications; it does not establish the owner's participation or available basis.
Locate the taxpayer and the asset
Start with the deed, entity classification and return on which depreciation is claimed. A disregarded LLC, partnership and S corporation have different reporting paths. For an entity-owned property, the owner's K-1 is one input, not the entire deductibility analysis. Obtain basis schedules and financing information before assuming a loss allocation will reach the personal return. Keep ownership changes visible in the analysis.
Identify why a deduction could be deferred
Losses can encounter more than one restriction. Basis and at-risk limits may apply before passive activity rules, with further limits relevant afterward. A dollar deferred under one rule is not necessarily released by an event relevant to another. Ask the preparer to label the limitation and carryforward rather than showing one unexplained suspended-loss balance. Future projections should use that same distinction.
Request two outputs from the projection
The first output is the property or entity's depreciation calculation. The second is the deduction currently usable by the taxpayer and its modeled tax effect. Reconcile the two explicitly. If a key fact is unresolved, show an alternative scenario instead of silently assuming the favorable answer. Include state treatment and the expected holding period before using the estimate to make a purchase or financing decision.
Illustrative decision
Two owners receive the same $40,000 depreciation allocation. One has sufficient basis, amount at risk and usable passive income; the other has a basis restriction. Their current deductions can differ even though the underlying study is identical. A useful projection labels both the generated amount and the amount actually carried onto each owner's return.
Records and decisions to prepare
- Identify the taxpayer claiming depreciation
- Reconcile owner basis where applicable
- Review at-risk and passive limitations in order
- Separate current deductions from each type of carryforward
Primary references for this decision:
- IRS Publication 925: passive activity and at-risk rules
- IRS Publication 946: depreciation methods and eligibility
Examples illustrate decisions, not guaranteed outcomes. Apply the rules for the relevant tax year and review the underlying facts before filing.
Cost segregation decisions · Browse owner tax decisions · Editorial standards
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