The fixed asset accounting process is the sequence a business follows to record a long-lived tangible asset, spread its cost across the years it produces value, handle changes in its condition or use, and close it off the books when it leaves service. It runs from the capitalization decision at purchase, through depreciation on parallel book and tax schedules, through classification of later spending and any impairment write-downs, and ends with a disposal entry and an updated asset register. Every step exists because generally accepted accounting principles (GAAP) require you to spread an asset’s cost across the years it benefits rather than deduct it all up front.1Board of Governors of the Federal Reserve System. Financial Accounting Manual for Federal Reserve Banks – Chapter 3 Property and Equipment
Step 1: Decide Whether to Capitalize
Every purchase starts with a threshold question. Is this item large enough and long-lived enough to sit on the balance sheet, or does it belong on the income statement as a current expense? Most companies set an internal capitalization threshold, a dollar floor below which everything is expensed regardless of useful life. The IRS backs this up with a de minimis safe harbor: businesses with audited financial statements can expense items costing up to $5,000 per invoice, and those without audited statements can expense up to $2,500.2Internal Revenue Service. Tangible Property Final Regulations Aligning your internal threshold with those figures keeps your book and tax treatment in sync for small purchases.
Above the threshold, the item becomes a fixed asset and moves to step two.
Step 2: Build the Cost Basis
The recorded cost is not just the invoice price. It includes every expenditure needed to get the asset to its location and into working condition: freight, installation labor, sales and use taxes, site preparation, professional fees, and testing. A $50,000 machine with $3,000 in shipping and $2,000 in installation goes on the books at $55,000. That total drives every depreciation calculation that follows, so getting it complete matters more than any single later entry.
Assets you build yourself follow the same principle but require assembling the cost from payroll records, material invoices, and equipment usage logs. Under GAAP, you capitalize direct materials, the wages of employees for hours worked on the project, and depreciation on company equipment used in construction. General overhead stays out. For tax purposes, Section 263A takes a broader view and may pull in indirect costs like insurance, property taxes on the construction site, and utilities consumed during building.3Internal Revenue Service. Section 263A Costs for Self-Constructed Assets
Step 3: Record the Asset and Update the Register
When the asset is ready for use, debit the appropriate Property, Plant, and Equipment (PPE) account for the full cost basis and credit Cash or Accounts Payable. Then add the asset to your Fixed Asset Register (FAR), a subsidiary ledger tracking each asset’s description, cost, acquisition date, physical location, assigned useful life, and accumulated depreciation. The FAR is the single source of truth for the rest of the asset’s life on your books. Every later step, from depreciation to disposal, refers back to it.
Step 4: Depreciate the Asset for Financial Reporting
Depreciation begins when the asset is available for its intended use. Under GAAP, that means installed, tested, and capable of operating, not necessarily the date production actually starts. A machine ready on March 15 depreciates from March 15, even if the first run happens in April.
You need three inputs: the cost basis, an estimated useful life, and an estimated salvage value. Cost basis minus salvage value gives the depreciable base. The method you choose determines how that base gets spread.
Straight-Line
The straight-line method divides the depreciable base equally across the useful life and is the most common choice for financial statements. An asset with a $100,000 cost, a $10,000 salvage value, and a five-year life depreciates at $18,000 per year until the book value reaches $10,000.
Accelerated Methods
Double-declining balance applies twice the straight-line rate to the beginning book value each year, front-loading expense into the early years. Companies typically switch to straight-line partway through the asset’s life so the book value lands at salvage value on schedule.
Units-of-production ties depreciation to actual output instead of the calendar. Divide the depreciable base by total estimated lifetime output to get a per-unit rate, then multiply by actual units each period. This fits equipment where wear tracks usage more than time.
The Entry
Regardless of method, each period’s journal entry is the same shape: debit Depreciation Expense on the income statement and credit Accumulated Depreciation, a contra-asset that reduces the asset’s carrying value on the balance sheet.
Step 5: Track Tax Depreciation Separately
Book depreciation and tax depreciation almost never match, so most businesses maintain parallel schedules. Federal tax depreciation follows the Modified Accelerated Cost Recovery System (MACRS), which assigns each asset to a recovery class with prescribed annual percentages.4Internal Revenue Service. Publication 946 – How To Depreciate Property
The most common MACRS classes under the General Depreciation System are:5Internal Revenue Service. Publication 946 – How To Depreciate Property
- 5-year property: automobiles, light trucks, computers, office machinery, and research equipment.
- 7-year property: office furniture and fixtures, railroad track, and any property without a designated class life.
- 27.5-year property: residential rental buildings.
- 39-year property: nonresidential real property such as office buildings, stores, and warehouses.
MACRS also dictates a convention for the first and last year. The default half-year convention treats all property as placed in service at the midpoint of the year, giving half a year’s depreciation in each of those years.5Internal Revenue Service. Publication 946 – How To Depreciate Property If more than 40 percent of the year’s total depreciable property enters service in the last three months, the mid-quarter convention applies instead, and first-year depreciation depends on the quarter.6eCFR. 26 CFR 1.168(d)-1 – Half-Year and Mid-Quarter Conventions Real property uses a mid-month convention.
Two elections can override MACRS entirely for qualifying purchases. Section 179 lets you deduct the full cost of qualifying equipment and software in the year it’s placed in service. For 2026, the maximum deduction is $2,560,000, phasing out dollar-for-dollar once total qualifying purchases exceed $4,090,000. The deduction cannot exceed your taxable business income, so it cannot create or increase a net operating loss.
Bonus depreciation runs alongside Section 179 with different mechanics. The One Big Beautiful Bill Act permanently restored 100 percent bonus depreciation for qualifying property acquired and placed in service after January 19, 2025.7Internal Revenue Service. One Big Beautiful Bill Provisions It has no dollar cap, applies before Section 179 in the calculation order, and can generate a net operating loss. For most 2026 purchases, the whole cost is deductible in year one for tax purposes while the books still show multi-year depreciation. The gap creates a temporary difference that runs through your deferred tax accounts.
Step 6: Classify Later Spending as Repair or Improvement
Every dollar spent on an asset after it enters service has to be sorted into one of two buckets, and the sort determines whether it hits the income statement now or the balance sheet for years.
Routine repairs and maintenance restore the asset to its expected operating condition without making it materially better, extending its life, or adapting it to a new use. Brake pads on a delivery truck, a repaint on a warehouse, a replacement hard drive in a server: debit Repairs and Maintenance Expense, done.
Capital improvements extend useful life, add capacity, or materially improve efficiency. A new climate-controlled wing on a warehouse, or a significantly more powerful engine dropped into a truck, gets added to the asset’s cost basis in the FAR and depreciated over the remaining life (or a new, longer life if the improvement warrants it).
Errors in either direction distort the financial statements. Expensing an improvement understates assets and current-year income. Capitalizing a routine repair overstates both. Auditors examine items near the capitalization threshold closely, so document the reasoning whenever the call isn’t obvious.
Step 7: Test for Impairment When Something Changes
Depreciation handles gradual, expected decline. Impairment handles the sudden kind. Under ASC 360, if something suggests an asset’s carrying value may not be recoverable, you have to test it. Triggering events include a sharp drop in market price, a major change in the asset’s use or physical condition, adverse regulatory or legal developments, construction costs running far over budget, and sustained operating losses tied to the asset.
The test has two steps. First, compare carrying value to the total undiscounted future cash flows the asset is expected to generate through use and disposal. If carrying value is lower, the asset passes and no entry is required. If carrying value is higher, move to step two and measure the loss as the difference between carrying value and fair value. Fair value comes from market prices for comparable assets or the present value of expected future cash flows at an appropriate discount rate.
Record the loss on the income statement immediately and write the asset down to its new fair value. That reduced amount becomes the new basis for future depreciation. Under GAAP, an impairment on an asset held for use cannot be reversed later, even if the asset’s value recovers. The write-down is permanent.
Step 8: Record the Disposal
The process ends when the asset is sold, scrapped, traded, or abandoned. The sequence is short but easy to shortcut.
First, book depreciation up to the exact disposal date. Selling a machine on March 15 when your last entry was December 31 requires a partial-year entry covering January 1 through March 15, so accumulated depreciation is current.
Next, calculate final book value (original cost minus total accumulated depreciation) and compare it to what you received. Proceeds above book value produce a gain; proceeds below book value, or nothing at all, produce a loss.
The disposal entry clears both the asset and its contra account. Debit Accumulated Depreciation for its full balance, credit the PPE account for the asset’s original cost, debit Cash for any proceeds, and plug the balancing amount as Gain on Disposal (credit) or Loss on Disposal (debit). A machine recorded at $55,000, with $45,000 of accumulated depreciation, sold for $15,000, produces a $5,000 gain.
Finally, flag the asset as retired in the FAR. This is the step that gets skipped most often, especially when the person handling the sale isn’t the person maintaining the register. An un-retired asset keeps generating automated depreciation entries and inflates asset totals until someone catches it during a count or audit.
Keeping the Register Honest
A Fixed Asset Register is only as good as its last verification. Assets get moved, cannibalized, quietly scrapped, or lost, and without physical counts the register drifts further from reality every quarter. Most organizations perform a full physical inventory at least annually. Companies with large equipment fleets or many locations often count quarterly. Software and service companies with few physical assets may lean on annual verification supplemented by IT reports for computer hardware.
A few basics keep counts effective. Tag each asset with a barcode or RFID label at acquisition so counters can scan rather than transcribe. Assign counting to people who don’t have custody of the assets being counted, preserving segregation of duties. Document every discrepancy, whether it’s an asset in the register but not the building or one on-site with no matching entry, and resolve each in writing before closing the reconciliation. The reconciliation itself compares physical count results against the FAR and the general ledger PPE balances, and the resolution of any gaps is what keeps the financial statements accurate at year-end.