The capitalization of costs in accounting means recording a purchase as an asset on the balance sheet rather than as an expense on the income statement, then moving the cost to expense gradually as the asset is used up. The point is to match the cost of a resource with the periods it helps generate revenue, so a single year’s profit is not distorted by a large outlay that will benefit the business for years. Whether a cost gets capitalized shapes reported earnings, asset values, and tax liability, so the classification decision is one every business owner and accountant faces regularly.
When a Cost Has to Be Capitalized
Under both U.S. GAAP and IFRS, a cost qualifies for capitalization when two things are true: the expenditure will probably produce future economic benefits, and its cost can be measured reliably.1IFRS Foundation. IAS 16 Property, Plant and Equipment If a purchase will be consumed or lose its usefulness within the current fiscal year, it belongs on the income statement as a period expense instead.
The IRS uses a parallel concept called the 12-month rule. Prepaid amounts that create rights or benefits lasting no longer than 12 months, or through the end of the following tax year, do not have to be capitalized.2Internal Revenue Service. Publication 538 – Accounting Periods and Methods
Even when an item would meet the future-benefit test in principle, most businesses set a dollar threshold below which everything is expensed automatically. The IRS de minimis safe harbor lets a business without an applicable financial statement expense any item costing $2,500 or less per invoice. A business that does have an applicable financial statement can go up to $5,000 per invoice.3Internal Revenue Service. Tangible Property Final Regulations4Internal Revenue Service. Notice 2015-82 – Increase in De Minimis Safe Harbor Limit Below those limits, a $400 hand tool or an $1,800 laptop goes straight to expense without further analysis, even though each will last more than a year.
IAS 16 also requires that the recorded cost be verifiable through invoices, purchase agreements, or similar documentation. Speculative or subjective values cannot land on the balance sheet.5IFRS Foundation. IAS 16 Property, Plant and Equipment
What Kinds of Costs Get Capitalized
Property, Plant, and Equipment
Tangible fixed assets are the most common category. Buildings, machinery, vehicles, and office furniture qualify when the business intends to use them in operations across multiple years. Each asset gets its own account on the balance sheet and follows a depreciation schedule tied to its expected useful life.
Land is a special case. The IRS treats it as having an indefinite life, so its cost sits on the balance sheet at the original recorded amount and is never depreciated.6Internal Revenue Service. Topic No. 704, Depreciation Land improvements, though, do depreciate. Paving a parking lot, installing fencing, or adding exterior lighting all have finite useful lives and are capitalized in a separate account from the land itself.
Intangible Assets
Patents, trademarks, copyrights, and trade names all qualify for capitalization when they are identifiable and the entity controls the future economic benefits they produce.7IFRS Foundation. IAS 38 Intangible Assets An intangible is identifiable if it can be separated from the business and sold, licensed, or transferred, or if it arises from a contractual or legal right. Goodwill from a business acquisition is also capitalized but follows impairment-based rules rather than systematic amortization under U.S. GAAP.
Software
Internal-use software costs incurred during the application development stage are currently capitalized rather than expensed. Preliminary project costs, such as evaluating vendors and deciding whether to proceed, and post-implementation training costs, are expensed as incurred. For annual reporting periods beginning after December 15, 2027, FASB will replace the stage-based framework with a two-part test: management must have authorized and committed to funding the project, and it must be probable the software will be completed and used as intended.8Financial Accounting Standards Board. Accounting for and Disclosure of Software Costs Companies can early-adopt the new guidance; those still on the current rules should keep tracking development stages.
Leasehold Improvements
Permanent improvements to a rented space, such as installing walls, rewiring electrical systems, or upgrading plumbing, are capitalized even though the tenant does not own the building. These costs are amortized over the shorter of the improvement’s useful life or the remaining lease term, because the tenant loses access to the improvement when the lease ends.
Repairs Versus Capital Improvements
This is where the classification question gets hardest in practice. The IRS draws the line using what practitioners call the BAR test. A cost has to be capitalized if the work results in a betterment, an adaptation to a new use, or a restoration of the property.3Internal Revenue Service. Tangible Property Final Regulations
A betterment fixes a pre-existing defect, materially adds to the property’s size or capacity, or materially increases its productivity, efficiency, or output. An adaptation converts the property to a use different from its ordinary purpose when it was first placed in service. A restoration replaces a major component or substantial structural part, returns property that has broken down entirely to working condition, or rebuilds property to a like-new state after its class life has ended.
If none of those three categories applies, the cost is a deductible repair. Replacing a broken window in an office building is a repair. Replacing the entire roof is a restoration, because the roof is a major building component.
The IRS also offers a routine maintenance safe harbor that lets businesses deduct recurring upkeep without running the full BAR analysis. To qualify, the business must reasonably expect to perform the activity more than once during the property’s class life (or within ten years for buildings), and the work must keep the property in its ordinary operating condition. The safe harbor does not cover betterments, so an upgrade dressed up as maintenance will not qualify.
What Goes Into the Recorded Cost
The amount capitalized is not just the sticker price. Under IAS 16 and the IRS basis rules, the recorded cost has to include everything needed to bring the asset to its intended location and working condition.5IFRS Foundation. IAS 16 Property, Plant and Equipment9Internal Revenue Service. Topic No. 703, Basis of Assets
Start with the purchase price after subtracting trade discounts and rebates. Then add:
- Delivery and handling, including freight, shipping, and insurance during transit.
- Site preparation, such as grading, foundation work, or clearing space for a new machine.
- Installation and assembly labor and materials needed to get the asset operational.
- Testing costs, including trial runs, calibration, and materials consumed during performance verification. Once the asset is ready for production, the capitalization window for testing costs closes.
- Non-refundable taxes, such as sales tax and import duties.
- Professional fees tied directly to the acquisition, including legal costs for title searches, patent filings, or contract review.
Two additional components come up less often but can be significant. When a company has a legal obligation to dismantle, remove, or remediate an asset at the end of its life, the estimated cost of that future obligation is added to the asset’s carrying value at the time the obligation is recognized. A manufacturer that must decommission a chemical processing facility records the fair value of that future cleanup cost as both a liability and an addition to the asset’s book value, and then depreciates the added cost along with the rest of the asset.
Interest is the other. For assets that require a substantial construction period before they are ready for use, FASB requires that interest on borrowings attributable to the construction be capitalized during the construction period rather than expensed. This applies to facilities a company builds for its own use and to discrete construction projects such as real estate developments or ships built for sale. Routine manufacturing inventory does not qualify.10Financial Accounting Standards Board. Summary of Statement No. 34 – Capitalization of Interest Cost Interest capitalization begins when expenditures are being incurred and active work is under way, and it stops once the asset is substantially complete.
Depreciation and Amortization Move the Cost to Expense
Once an asset is placed in service, its capitalized cost is shifted from the balance sheet to the income statement gradually. Tangible assets go through depreciation; intangible assets go through amortization. Each period’s charge reduces the asset’s carrying value and appears as an operating expense that reflects how the asset is being consumed.
The simplest method is straight-line depreciation, which divides the cost (minus any expected salvage value) equally across the years of estimated useful life. A $50,000 machine with a 10-year life and no salvage value produces $5,000 in annual depreciation expense. The cumulative amount charged so far sits in an account called accumulated depreciation, which is subtracted from the original cost on the balance sheet. If that machine has $20,000 of accumulated depreciation, its carrying value is $30,000.
For tax purposes, most U.S. businesses use the Modified Accelerated Cost Recovery System (MACRS) instead of straight-line. MACRS assigns each asset to a property class with a fixed recovery period, such as 5-year property for vehicles and computers, 7-year property for office furniture and most machinery, and 39-year property for nonresidential buildings.11Internal Revenue Service. Publication 946, How To Depreciate Property MACRS front-loads deductions, producing larger write-offs in the early years. It is normal for book depreciation and tax depreciation to differ as a result.
Intangible assets with finite useful lives are amortized on a straight-line basis over their expected period of benefit. A patent with 15 years of remaining legal protection would be amortized over those 15 years. Indefinite-lived intangibles, such as certain trademarks, are not amortized. They are tested annually for impairment instead.
Tax Elections That Change the Timing
The depreciation schedules above are the default. Several tax provisions let businesses recover costs much faster, and sometimes immediately.
Section 179
Section 179 lets a business deduct the full cost of qualifying property in the year it is placed in service. For 2026, the maximum deduction is $2,560,000. That limit phases out dollar-for-dollar once total qualifying property placed in service during the year exceeds $4,090,000, and it disappears entirely at $6,650,000.11Internal Revenue Service. Publication 946, How To Depreciate Property Sport utility vehicles face a separate cap of $32,000. Section 179 is available for most tangible personal property used in a trade or business, and the deduction cannot exceed the business’s taxable income for the year. Some states do not conform to the federal Section 179 limits, so a deduction that works on the federal return may need to be partly added back on a state return.
Bonus Depreciation
The One Big Beautiful Bill Act made 100% first-year bonus depreciation permanent for qualified property acquired and placed in service after January 19, 2025.12Internal Revenue Service. Treasury, IRS Issue Guidance on the Additional First Year Depreciation Deduction Amended as Part of the One, Big, Beautiful Bill Unlike Section 179, bonus depreciation has no dollar cap and no taxable-income limitation. It applies automatically to eligible new and used property unless the taxpayer elects out.
Research and Experimental Expenditures
Between 2022 and 2024, Section 174 required businesses to capitalize domestic research and experimental costs and amortize them over five years. The One Big Beautiful Bill Act introduced Section 174A, which restores immediate expensing for domestic research expenditures in tax years beginning after December 31, 2024. For 2026, domestic R&D costs can be deducted in full in the year incurred. Foreign research expenditures still have to be capitalized and amortized over 15 years. Software development costs are treated as research expenditures eligible for immediate domestic expensing under the same rules.
When the Asset Comes Off the Books
Impairment
A capitalized asset does not always hold its value through the end of its depreciation schedule. When circumstances suggest the carrying value may no longer be recoverable, U.S. GAAP requires an impairment test. Triggering events include a sharp drop in the asset’s market price, a major change in how the asset is being used, deterioration in its physical condition, or broader shifts such as declining industry demand or adverse regulatory changes.
For long-lived tangible assets, the first step compares the carrying value to the undiscounted future cash flows the asset is expected to generate. If those cash flows exceed the carrying value, no impairment exists, even if fair market value has dipped below book value. If cash flows fall short, the impairment loss equals the gap between carrying value and fair value, and it flows through the income statement as a loss. Goodwill and indefinite-lived intangibles follow a different schedule: they must be tested at least annually, with additional testing triggered by events such as sustained stock price declines, loss of key customers, or deterioration in cash flow projections.
Sale, Scrapping, or Retirement
When a company sells, scraps, or retires an asset, the original cost and all accumulated depreciation are removed from the books. What happens next depends on the relationship between the asset’s carrying value and what the company receives:
- Sale above carrying value produces a gain, recorded on the income statement.
- Sale at carrying value produces no gain or loss; the asset is written off and the cash received is recorded.
- Sale below carrying value produces a loss.
- Scrapping with no proceeds means the entire remaining carrying value is recognized as a loss.
Depreciation has to be updated through the date of sale or retirement before the disposal entry is made. Skipping that step overstates the carrying value and distorts the reported gain or loss.