Updated for the 2026-2027 CFA® Level I curriculum.
Companies disclose detailed information about property, plant, and equipment (PPE) and intangible assets in their financial statement footnotes. These disclosures tell you how a company depreciates or amortizes its assets, how old those assets are, and how much useful life remains. For CFA Level I, you need to read these disclosures and turn them into analytical conclusions, not just know the accounting rules.
Quick Answer
PPE and intangible asset disclosures reveal the depreciation or amortization method used, useful life assumptions, gross and net carrying amounts, and accumulated depreciation or amortization. Analysts use this data to estimate the average age and remaining useful life of assets, and to compare companies that use different methods, like the straight line method of depreciation versus declining balance depreciation. The amortization of intangible assets with finite lives follows the same logic as depreciation, while indefinite-life intangibles are not amortized at all.
Key Takeaways
Depreciation and amortization disclosures include method, useful life, gross carrying amount, and accumulated depreciation or amortization.
Straight-line depreciation spreads cost evenly, while declining balance depreciation front-loads expense.
Amortization expense applies only to intangible assets with finite useful lives.
Analysts calculate average age, remaining useful life, and average total useful life directly from disclosed figures.
Comparing companies on method or assumption choice alone can distort analysis if you ignore the underlying economics.
Indefinite-life intangible assets are never amortized, only tested for impairment.
What You Need to Know for CFA Level I
The LOS asks you to analyze and interpret disclosures, not just recall definitions. Expect questions that hand you a footnote and ask what it implies.
Know the three common types of depreciation: straight-line, declining balance, and units-of-production, and how each affects reported expense over time.
Be able to calculate average age, remaining useful life, and average total useful life from disclosed PPE figures.
Keep this note separate from impairment and derecognition. This page covers normal depreciation and amortization disclosures, not write-downs or disposals.
The main trap: confusing which ratio uses accumulated depreciation versus net PPE in the numerator.
Why PPE and Intangible Asset Disclosures Matter
Financial statements show PPE and intangible assets at a single net number on the balance sheet. The footnotes break that number apart. A typical disclosure includes the gross carrying amount, the depreciation or amortization method, estimated useful lives or rates, accumulated depreciation or amortization, and a reconciliation of beginning and ending balances for the period.
This detail matters because two companies can report similar net PPE balances while holding assets of very different age and condition. A company with older assets nearing the end of their useful lives may face higher capital expenditures soon. Without the footnote detail, you cannot see that risk from the balance sheet alone.
Types of Depreciation Methods for PPE
Companies choose among several depreciation methods, and the choice affects the pattern of expense recognition, though not the total depreciation taken over an asset's life.
Straight-Line Method of Depreciation
The straight line method of depreciation allocates an equal expense each period over the asset's useful life.
where:
Cost: original acquisition cost,
Residual Value: expected residual amount at the end of use, and
Useful Life: number of periods of expected use.
This method fits assets that generate benefits evenly over time, such as office buildings.
Declining Balance Depreciation
Declining balance depreciation applies a constant rate to the asset's falling net book value, producing higher expense early and lower expense later.
For double-declining balance, the rate equals twice the straight-line rate: . Residual value is not subtracted in the formula, but depreciation stops once book value reaches residual value.
This method suits assets that lose usefulness quickly, such as technology equipment.
Units-of-Production Method
This method ties expense to actual usage rather than time.
Manufacturing equipment and vehicles often use this method because wear depends on output, not calendar time.
Method | Expense Pattern | Best Fit | Early Net Income Effect |
|---|---|---|---|
Straight-line | Equal each period | Even benefit consumption | Higher than accelerated methods |
Declining balance | High early, low later | Rapid value or usefulness loss | Lower early, higher later |
Units-of-production | Tied to output | Usage varies by period | Depends on production volume |
Amortization of Intangible Assets with Finite Lives
The amortization of intangible assets follows the same mechanics as depreciation but applies only to intangibles with a finite useful life, such as patents or customer contracts with a defined term. Companies most commonly use the straight-line method for amortization expense, though any systematic method matching the pattern of economic benefit is acceptable.
Intangible assets with an indefinite useful life, including most goodwill and some trademarks, are never amortized. Instead, companies test them for impairment at least annually. This is a key boundary: amortization applies only to finite-life intangibles, while impairment testing applies to both finite and indefinite-life assets. Impairment measurement itself is covered in a separate note.
Estimating Asset Age and Remaining Life from Disclosures
Disclosures let you calculate how old a company's PPE base is and how much useful life remains, using figures straight from the footnotes.
Treat these as approximate accounting-age measures. They work best with straight-line depreciation, negligible residual values, a reasonably stable asset base, and depreciable PPE excluding land. They do not establish the physical condition of every asset. These three ratios use the same annual depreciation expense in the denominator but different numerators. Mixing them up is one of the most common Level I errors on this topic.
Comparability Issues: Method and Assumption Choices
Two companies with identical assets can report very different depreciation expense, net income, and asset values if they choose different methods or useful life assumptions. A company using declining balance depreciation will show lower net income and lower net PPE early in an asset's life compared to a company using straight-line, even though the underlying asset is identical.
Useful life assumptions create the same problem. A longer assumed useful life spreads cost over more periods, producing lower annual depreciation expense and higher reported net income. When comparing companies, check the disclosed useful lives and methods before concluding that one company is more profitable or more efficient.
Working Example
Garrison Robotics Inc. uses straight-line depreciation, negligible residual values, and a stable depreciable PPE base excluding land. It discloses the following in its year-end footnotes.
Intangible asset (patent):
Cost: $600,000
Useful life: 10 years, no residual value
Method: straight-line
Property, plant, and equipment:
Gross PP&E: $2,000,000
Accumulated depreciation: $750,000
Annual depreciation expense: $125,000
Step 1: Calculate annual amortization expense on the patent.
After 3 years, accumulated amortization equals $180,000, leaving a carrying value of $420,000.
Step 2: Calculate PPE age ratios.
The patent is 30% through its 10-year life, with $420,000 of carrying value left to amortize. The equipment base has an average age of 6 years out of an expected 16-year life, leaving roughly 10 years of productive use. These accounting estimates provide a starting point for replacement analysis. Check asset condition, maintenance, technological change, and the distribution of ages before concluding that near-term replacement spending is low.
Common Exam Traps
Mixing up the numerator in age and life ratios
Average age uses accumulated depreciation. Remaining useful life uses net PP&E. Average total life uses gross PP&E. All three share the same denominator, which makes them easy to confuse under time pressure.
Assuming declining balance always lowers net income
It lowers net income early in the asset's life but produces higher net income than straight-line later, since total depreciation over the asset's life is identical under both methods.
Treating indefinite-life intangibles as amortized
Only finite-life intangibles generate amortization expense. Indefinite-life intangibles are tested for impairment instead.
Ignoring residual value in declining balance calculations
The formula does not subtract residual value directly, but depreciation must stop once book value reaches the residual value estimate.
Comparing companies without checking method or useful life assumptions
Differences in depreciation expense can come entirely from accounting choices, not operating performance.
Practice Question
An analyst reviews a footnote disclosure for Caldwell Industries:
Gross PP&E: $1,500,000
Accumulated depreciation: $600,000
Annual depreciation expense: $100,000
What is the approximate average age of Caldwell's PP&E?
15 years
6 years
9 years
Correct Answer: B
Explanation: Average age equals accumulated depreciation divided by annual depreciation expense: .
Option A: 15 years comes from gross PP&E divided by annual depreciation expense , which calculates average total useful life, not average age.
Option C: 9 years comes from net PP&E divided by annual depreciation expense , which calculates remaining useful life, not average age.
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FAQs About PPE and Intangible Asset Disclosures and Analysis
What is the difference between depreciation and amortization of intangible assets?
Depreciation applies to tangible assets like PPE. Amortization expense applies to intangible assets with finite useful lives, such as patents. Both allocate cost over the asset's useful life using similar methods.
Why would a company choose declining balance depreciation over the straight-line method?
Declining balance depreciation better matches expense to assets that lose usefulness quickly, such as technology or machinery. It also defers taxable income in jurisdictions where it is allowed for tax reporting.
Are all intangible assets amortized?
No. Only intangible assets with a finite useful life are amortized. Indefinite-life intangibles, including most goodwill, are tested for impairment instead of being amortized.
How do analysts estimate how old a company's PPE is?
Analysts divide accumulated depreciation by annual depreciation expense to estimate average age, using figures disclosed in the PPE footnote.
Does the choice of depreciation method affect cash flow?
Depreciation is a non-cash expense, so it does not directly affect operating cash flow. Tax depreciation can affect taxes paid and cash flow. Changing the financial reporting depreciation method alone does not automatically change tax deductions or cash.