A depreciation schedule looks like a wide table: one row per business asset, and a series of columns that describe what the asset cost, when it was placed in service, how it’s being written off, and how much value is left. Read left to right, a single row tells the full life story of one piece of property; read top to bottom, the schedule shows every depreciable asset the business owns, usually grouped by property class and totaled at the bottom.
The layout is straightforward once you know what each column does, but the numbers carry real weight because the subtotals feed directly onto Form 4562 and from there to your income tax return.
The Columns in Every Row
Most schedules share the same core columns whether they’re built in a spreadsheet or generated by accounting software.
The first column is the asset description, a plain-English name or internal ID. Next is the date placed in service, meaning the day the asset became available for business use. That date matters more than the purchase date because it controls which tax year’s rules apply and how much you can claim in year one.
The cost basis column records the full acquisition cost: purchase price plus shipping, installation, and sales tax. For real estate, the cost basis comes from the closing statement and excludes land value, because land isn’t depreciable.1Internal Revenue Service. Publication 946 (2024), How To Depreciate Property Getting this figure right at the start matters, because every future number in the row depends on it.
Three technical columns control the math. The depreciation method column shows whether the asset uses straight-line depreciation or an accelerated method such as the 200% or 150% declining balance under MACRS. The recovery period column gives the number of years over which the asset is written off. The convention column records the timing rule that determines how much depreciation is allowed in the first and last years.
Recovery periods aren’t chosen freely. Federal law assigns every depreciable asset to a class based on its expected useful life,2Office of the Law Revision Counsel. 26 U.S. Code 168 – Accelerated Cost Recovery System and Publication 946 has the lookup table most taxpayers use when adding a new row.1Internal Revenue Service. Publication 946 (2024), How To Depreciate Property The common classes:
- 3-year property: certain specialized tools and some livestock.
- 5-year property: automobiles, light-duty trucks, computers, and semiconductor manufacturing equipment.
- 7-year property: office furniture, desks, filing cabinets, and most machinery not assigned elsewhere.
- 15-year property: land improvements such as fences, roads, sidewalks, and landscaping.
- 27.5-year property: residential rental buildings.
- 39-year property: commercial (nonresidential) buildings.
The convention column is where people slip up. Most personal property (equipment, vehicles, furniture) uses the half-year convention, which treats every asset as placed in service at the midpoint of the year regardless of the actual date. You get half a year’s depreciation in year one and half in the final year. If more than 40% of your personal property purchases for the year happen in the last three months, the IRS forces you onto the mid-quarter convention, which assigns depreciation based on which quarter the asset entered service. Real property uses a mid-month convention.
The final columns track financial progress. Current year depreciation shows the deduction for the present tax year. Accumulated depreciation sums every deduction taken since the asset entered service. Net book value (sometimes called adjusted basis) shows what’s left after subtracting accumulated depreciation from cost basis. When net book value hits zero, the asset is fully depreciated. One detail worth flagging: under MACRS, salvage value is always zero, so you depreciate the entire cost basis down to nothing. That differs from book depreciation, where a residual value might be estimated and subtracted.
How the Rows Are Grouped
A schedule with more than a handful of assets quickly becomes long. Grouping keeps it readable and makes errors easier to catch on review.
The standard approach is grouping by property class: all 5-year assets in one block, all 7-year assets in the next, and so on. Each group ends with a subtotal row summing cost basis, current-year depreciation, and accumulated depreciation for that class. Those subtotals tie directly to the corresponding lines in Part III of Form 4562, which asks for depreciation totals by recovery period.
Within each class, some businesses further organize by year placed in service, which makes it easy to see when older equipment will be fully written off. A grand total row at the bottom aggregates every group into a single depreciation expense figure for the year. Businesses with multiple locations often use separate tabs or pages per site.
Fully depreciated assets usually stay on the schedule as long as the business still owns and uses them. Removing one early creates confusion if the asset is later sold or scrapped, because you still need the original cost basis and accumulated depreciation to calculate gain on disposal.
Extra Columns for Listed Property
Some assets need additional columns because the IRS demands stricter records for them. These are called listed property and include passenger vehicles, property used for entertainment, and certain other assets prone to personal use.
For listed property, the schedule needs columns for total use and business-use percentage. For vehicles, that means total miles driven and business miles driven, with the ratio calculated. If business use falls to 50% or less, accelerated depreciation and Section 179 expensing are off the table, and the asset switches to straight-line under the Alternative Depreciation System.1Internal Revenue Service. Publication 946 (2024), How To Depreciate Property
Documentation requirements are specific: a contemporaneous log recording the date, business purpose, and mileage for each trip. Records made weeks or months after the fact are far less likely to survive an audit. These numbers feed Part V of Form 4562, which is dedicated to listed property.
Columns for Section 179 and Bonus Depreciation
Two provisions allow large first-year write-offs, and both appear as dedicated columns on a well-built schedule.
Bonus depreciation lets you deduct a percentage of a qualifying asset’s cost immediately, before regular MACRS kicks in on the remainder. The One Big Beautiful Bill, signed into law in 2025, permanently reinstated 100% bonus depreciation for qualified property acquired and placed in service after January 19, 2025. For 2026, that means the full cost of most new and qualifying used equipment can be deducted in the year it enters service.3Internal Revenue Service. Additional First Year Depreciation Deduction (Bonus) – FAQ On the schedule you’ll typically see a column labeled Bonus Depreciation Amount or Special Depreciation Allowance. Any remaining basis after the bonus flows into the regular MACRS columns.
Section 179 is a separate election with a dollar cap. For 2026, the maximum Section 179 deduction is $2,560,000, phasing out dollar-for-dollar once total qualifying property placed in service exceeds $4,090,000. Unlike bonus depreciation, Section 179 cannot create or increase a net business loss. On the schedule, Section 179 amounts get their own column and flow into Part I of Form 4562 rather than Part III.4Internal Revenue Service. 2025 Instructions for Form 4562
Even when either provision zeroes out the deduction in year one, the schedule still shows full cost basis, the first-year deduction, and the remaining depreciable basis. Skipping these columns makes it nearly impossible to calculate recapture correctly if the asset is sold later.
Columns Added When an Asset Is Disposed Of
The schedule doesn’t stop at assets you still own. When you sell, scrap, or trade in a depreciated asset, the row needs a few more fields.
At minimum, a disposal entry adds the date of disposition, the amount realized (sale price), and the asset’s adjusted basis at the time of sale (cost minus accumulated depreciation). The difference between sale price and adjusted basis is the gain or loss.
Those fields matter because of depreciation recapture. If you sell equipment for more than its adjusted basis, some or all of the gain is taxed as ordinary income up to the total depreciation previously deducted, under Section 1245.5Office of the Law Revision Counsel. 26 U.S. Code 1245 – Gain From Dispositions of Certain Depreciable Property Real property (buildings) follows a different rule under Section 1250, with unrecaptured Section 1250 gain typically taxed at a maximum 25% rate rather than as ordinary income. Either way, the disposal columns are what make the calculation possible.
What Doesn’t Appear on the Schedule
Not every business purchase belongs here, and knowing what to leave off matters because a non-depreciable asset added in error creates phantom deductions.
Land is the biggest exclusion. Land doesn’t wear out, so its cost is never depreciated. When a building is purchased, the price has to be split between the structure (depreciable) and the land (not), using the closing statement or an appraisal.6Internal Revenue Service. Topic No. 704, Depreciation Getting the split wrong inflates deductions and exposes you to recapture and penalties later.
Inventory is also off the schedule; items held for sale get deducted as cost of goods sold when they sell. Property placed in service and disposed of in the same tax year doesn’t appear either, because there’s no multi-year recovery to track.1Internal Revenue Service. Publication 946 (2024), How To Depreciate Property Intangibles such as patents, customer lists, and goodwill follow separate amortization rules under Section 197 and generally appear on their own schedule.
How the Schedule Ties to Form 4562
The depreciation schedule is your internal working document. Form 4562 is where the results get reported to the IRS, and the two need to reconcile exactly, because the schedule is what you’d hand an auditor if the form’s numbers were challenged.
Form 4562 is organized to mirror a well-built schedule.7Internal Revenue Service. Form 4562, Depreciation and Amortization Part I handles Section 179. Part II covers the special depreciation allowance (bonus depreciation). Part III is regular MACRS depreciation, broken out by recovery period and convention. Part V handles listed property. The subtotals from your schedule’s asset-class groups should match the corresponding lines in these sections.
Line 22 sums Parts I through III into the single depreciation figure that carries over to your main return. Sole proprietors send that number to Schedule C; corporations send it to Form 1120. Partnerships and S corporations pass Section 179 through separately on Schedule K-1 rather than including it on line 22.4Internal Revenue Service. 2025 Instructions for Form 4562
You don’t file the schedule itself with your return; you keep it as part of your permanent records. The detailed schedule is what proves the numbers on Form 4562 are correct.