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Real estate tax decision guide

Should I do a cost segregation study, and in which year?

A cost segregation study can change when depreciation deductions are recognized. The useful question is not simply whether a study can produce accelerated depreciation. It is whether the timing helps after considering your basis, placed-in-service date, ability to use losses, future plans, and current tax position.

The decision in plain language

The goal is to compare realistic choices before documents are signed, funds move, or a filing position is fixed. A useful analysis ties the tax rules to your actual facts, timing, cash needs, alternatives, and records.

This page is an educational starting point. It is not a conclusion about your facts.

What changes the answer

  • The property type, acquisition date, placed-in-service date, and depreciable basis.
  • Whether a study already exists and whether prior depreciation methods need to be evaluated.
  • Your projected taxable income, passive activity position, and ability to use additional deductions.
  • The expected holding period, possible sale, and potential depreciation recapture.
  • Federal and state differences, including whether a state follows the relevant federal treatment.

Paths a Decision Memo may compare

  • Proceed now because the accelerated timing is expected to be usable and valuable.
  • Delay the study until a later year because the current deduction may not be usable or the facts are incomplete.
  • Use ordinary depreciation because the expected benefit does not justify the cost or complexity.
  • Address an existing property through an accounting-method analysis when appropriate.

The relevant paths depend on what remains legally and practically available before your deadline.

Records to gather

  • Closing statement and purchase allocation
  • Placed-in-service date and rental history
  • Current depreciation schedule
  • Prior federal and state returns
  • Existing engineering or cost segregation reports
  • Expected hold or sale timeline

Phænix confirms a tailored records list before paid work begins. Sensitive documents should be shared only through the secure portal provided for an engagement.

Timing matters

Bring the question forward before the transaction or filing position becomes permanent. The standard Decision Memo is generally delivered within 5 to 10 business days after the agreed records are complete and accepted. A deadline can change the scope or make analysis impractical, so identify it in the Readiness Intake.

What you leave with

A Decision Memo defines the question, states the material facts and assumptions, compares viable alternatives, models the relevant federal and state consequences, and gives you a written CPA recommendation with next steps. It is designed to help you act, coordinate with other professionals, and preserve the reasoning behind the decision.

Important distinction

A study identifies and classifies building components. It does not, by itself, determine whether the resulting deductions will reduce your current tax. That requires a separate analysis of loss limitations, timing, and the rest of your return.

Authoritative starting points

These IRS resources explain the underlying federal framework. They are not a substitute for applying current law to your facts.

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