# How to read a depreciation schedule A guided reading of a rental property depreciation schedule: what each column means, how Form 4562 relates to it, and what a cost segregation practitioner looks for. ## Short answer A depreciation schedule is the ledger of every depreciable asset a taxpayer owns: what it cost, when it was placed in service, which class and recovery period it is in, what convention and method apply, how much depreciation has been claimed so far and how much remains. It is the document behind Form 4562, and it is the first thing a cost segregation practitioner asks for on an existing building, because it shows in one page how the property has been treated and what a study would change. This article walks through the columns, explains how they connect to the tax rules, and lists what a practitioner looks for. It is general education for people entering the work and for owners who want to understand their own return, not tax advice. ## Where the schedule comes from Form 4562 is the return form on which depreciation is claimed. Its MACRS section groups property by classification and asks for the month and year placed in service, the basis for depreciation, the recovery period, the convention, the method and the deduction. The form shows the year's totals; the schedule behind it, kept by the preparer, lists every asset. Owners usually see the schedule as an attachment or a report from the adviser's software, labelled something like "depreciation detail" or "fixed asset report." ## The columns and what they mean | Column | What it records | The rule behind it | |---|---|---| | Asset description | What the asset is: "building," "land improvements," "appliances," "roof replacement 2023" | Each depreciable item is tracked separately; land appears as non-depreciable or not at all | | Date placed in service | When the asset was ready and available for its use | Depreciation begins at placed in service, not at purchase or at first rent | | Cost or basis | What was paid, including certain settlement costs, allocated between land and building by fair market value | Publication 551: cost basis and allocation | | Business use percentage | The share of use that is business or rental | Personal use reduces the depreciable share | | Section 179 or special allowance | Amounts expensed in the first year, including bonus depreciation | Reported separately on Form 4562 | | Depreciable basis | Cost less land, less amounts expensed, adjusted for business use | The number the annual deduction is computed from | | Class and recovery period | 5, 7, 15, 27.5 or 39 years | MACRS classes: appliances and furniture in a rental are 5-year; land improvements 15-year; residential rental property 27.5-year; nonresidential real property 39-year | | Convention | Mid-month for real property; half-year or mid-quarter for other property | Decides how much of the first and last year counts | | Method | Straight line for real property; declining balance for most shorter classes | Publication 946, which method applies | | Prior depreciation | Accumulated depreciation through the previous year | Reduces basis whether or not it was actually claimed: allowed or allowable | | Current depreciation | This year's deduction | Flows to Form 4562 and the rental schedule | | Adjusted basis | Cost less accumulated depreciation | What remains to be recovered; the starting point for gain on sale | ## Reading a typical rental schedule A schedule for a small rental bought without a study usually has two or three lines: land, building and perhaps a later improvement. The building line carries almost all the basis, in the 27.5-year class, straight line, mid-month convention. If the owner bought appliances separately they may appear as 5-year property. That is the whole story, and it tells the practitioner three things at once. 1. **The land split.** Whether land was separated at all, and on what evidence. A schedule with no land line, or a land line that looks like a round-number guess, is a question before it is a problem. 2. **The placed-in-service date.** It should match the documents: closing, certificate of occupancy, first availability for rent. A date that matches the purchase date on a property that was renovated for months before renting deserves a second look. 3. **What has not been separated.** Everything sitting in the building line that a study might identify as 5-, 7- or 15-year property. A schedule after a study looks different: a building line, a land improvements line, one or more personal property lines, each with its own class, convention and method, and a reconciliation to the same total basis. ## What a practitioner looks for - **Does the total tie?** The sum of land plus all depreciable basis should equal the purchase price plus capitalized costs. If it does not, something was expensed, omitted or double counted, and the study's reconciliation will surface it. - **Allowed or allowable.** If the owner skipped depreciation in some years, the basis was still reduced. The practitioner notes it; the adviser deals with it, often through the change-in-method mechanism. - **Improvements since acquisition.** Each is its own asset with its own placed-in-service date and its own bonus depreciation rules. They are not part of a look-back on the original building. - **Prior studies.** If a line already shows separated components, a prior study exists; ask for it. - **Class and method errors.** A building in a 39-year class that is residential, or vice versa, or personal property that has been put in the building class by default, are the errors a study corrects through a change in accounting method. - **Conventions.** Real property uses mid-month; a schedule applying half-year to a building is wrong on its face. ## How the schedule connects to a study For a new acquisition, the study produces the schedule: its asset list, with basis and class for each line, is what the adviser enters. For an existing building, the schedule is the "before" and the study is the "after"; the difference in depreciation from the placed-in-service date to the year of change is the section 481(a) adjustment that goes on Form 3115. In both cases the reconciliation is the same: the schedule's total basis, the study's total basis and the closing statement must agree. ## Common reading errors - Treating the purchase price as the depreciable basis. Land is not depreciable and must be separated first. - Confusing accumulated depreciation with the current deduction. - Assuming the placed-in-service date is the closing date. - Reading a software report's "book" depreciation, kept for financial statements, as the tax figure. - Missing that a line labelled "building" includes site work and equipment that were never separated. ## A short exercise for entrants Take any redacted rental schedule and answer, in writing: What is the total basis and does it tie to the closing statement? What is the land split and its evidence? What is the placed-in-service date and its evidence? What is in the building line that might belong elsewhere, and on what legal basis? What improvements since acquisition have their own lines? If you can answer those five questions from the schedule and the file, you can begin a study; if you cannot, you know which document to ask for next. ## What people ask on Reddit and other forums The searches that lead people to these threads are usually phrased "fixed asset schedule rental property". On r/tax and r/Accounting, and in "cost segregation reddit" threads, the depreciation schedule is where confusion usually starts. From the sources below: **"Why is my whole purchase price depreciating over 27.5 years?"** Because nobody separated anything. Land should have been separated first; personal property and land improvements sitting in the building line are what a study identifies. **"My placed-in-service date is the closing date. Is that right?"** Only if the property was ready and available for rent at closing. A renovated property is placed in service when the work is done and it is available. **"The schedule says prior depreciation but I never claimed it."** Basis is reduced by depreciation allowed or allowable. The adviser deals with skipped years, usually through the change-in-method mechanism. **"Can I fix a wrong class?"** For property already in service, generally through Form 3115 with a section 481(a) adjustment. ## Questions people also ask ### What is the difference between the depreciation schedule and Form 4562? Form 4562 is the return form with the year's totals by class. The schedule is the asset-by-asset detail behind it, kept by the preparer. ### Why is my land not on the schedule? Land is not depreciable, so some software lists it as a non-depreciable asset and some omits it. Either way, the basis allocated to land should be documented in the file. ### What does "allowed or allowable" mean on a schedule? Basis is reduced by the depreciation you could have claimed, whether or not you claimed it. A schedule that shows skipped years still shows reduced basis. ### Can a schedule be corrected if the class is wrong? For property already placed in service, generally through a change in accounting method on Form 3115 with a section 481(a) adjustment, handled by the tax adviser. ### Should I give my schedule to a practitioner? Yes, together with the closing statement and any records of improvements. It is the fastest way for a practitioner to tell you whether a study is likely to change anything. ## Sources - https://www.irs.gov/instructions/i4562 — Instructions for Form 4562, Depreciation and Amortization: Purpose of Form; Part III, MACRS Depreciation. - https://www.irs.gov/publications/p946 — IRS Publication 946 (2025), How To Depreciate Property: Chapter 1 (when depreciation begins and ends) and Chapter 4 (property classes, conventions, methods). - https://www.irs.gov/publications/p551 — IRS Publication 551 (Rev. December 2024), Basis of Assets: cost basis, allocating the basis. - https://www.law.cornell.edu/uscode/text/26/1016 — 26 U.S.C. §1016(a)(2). - https://www.irs.gov/publications/p527 — IRS Publication 527 (2025), Residential Rental Property: Chapter 2, property classes. - https://www.irs.gov/instructions/i3115 — Instructions for Form 3115, Application for Change in Accounting Method. ## Related reading - [What a cost segregation study does](/articles/what-a-cost-segregation-study-does) - [The evidence a cost segregation study needs](/articles/evidence-a-cost-segregation-study-needs) - [Look-back studies and Form 3115](/articles/look-back-cost-segregation-and-form-3115) - [How reconciliation reveals errors](/articles/how-reconciliation-reveals-errors) - [Acquisition date vs placed-in-service date](/articles/acquisition-date-vs-placed-in-service-date) - [The Practitioner Program](/program) --- Canonical: https://nbcss.org/articles/how-to-read-a-depreciation-schedule Published: 2026-09-25 · Last content change: 2026-09-25 Not professional advice: general educational information from the National Board of Cost Segregation Specialist (NBCSS); not accounting, tax, legal, financial, investment or engineering advice. Verify with a licensed CPA, enrolled agent, attorney or other qualified adviser before acting.