is a financial concept covered in this article. The Non-Cash Allocation of Tangible and Intangible Asset Costs
Volatility is far from synonymous with risk. Popular formulas that equate the two terms lead students, investors and CEOs astray.
Depreciation and Amortization (D&A) on the income statement represent the systematic, non-cash expense of allocating the historical cost of long-term tangible (depreciation) and intangible (amortization) assets over their estimated useful lives. Depreciation applies to property, plant, and equipment (PP&E), while amortization applies to finite-life intangibles like patents, software, or customer relationships. These charges reduce reported earnings and taxable income without affecting cash flow, serving as a key add-back in EBITDA calculations. They reflect capital intensity, asset utilization, and provide a tax shield, making them essential for understanding true operating performance and cash generation.
What is Depreciation and Amortization?
Depreciation is the allocation of the cost of tangible fixed assets (PP&E like buildings, machinery, vehicles) over their useful lives, reflecting wear and tear, obsolescence, or usage.
Amortization is the similar allocation for finite-life intangible assets (e.g., patents, copyrights, acquired customer lists, capitalized software).
Under US GAAP (ASC 360 for tangible, ASC 350 for intangibles) and IFRS (IAS 16 and IAS 38), these are required to match asset costs with the revenues they generate. Goodwill and indefinite-life intangibles are not amortized but tested annually for impairment.
D&A is non-cash but reduces taxable income (tax shield) and is added back in cash flow from operations.
Common Calculation Methods
Methods are chosen based on asset type and expected benefit pattern:
Primary Methods
- Straight-Line: (Cost − Salvage Value) ÷ Useful Life — most common, even expense
- Accelerated (Declining Balance): Higher early expense, matches faster early benefits
- Units of Production: Based on usage (e.g., miles for vehicles, hours for machinery)
- Sum-of-the-Years’-Digits: Accelerated method, less common
Amortization of intangibles is almost always straight-line over legal/economic life.
Changes in useful life or salvage are prospective—no restatement of prior periods.
“Volatility is far from synonymous with risk. Popular formulas that equate the two terms lead students, investors and CEOs astray.”
— Warren Buffett, Chairman & CEO, Berkshire Hathaway Berkshire Hathaway Chairman’s Letter 2014 (2014)
Examples of D&A Charges
Example 1: Straight-Line Depreciation
Manufacturing equipment cost 500K, 10-year life.
Annual Depreciation = (0.5M) / 10 = $450K. Expensed in cost of revenue or operating expenses.
Example 2: Amortization of Intangible
Acquired customer relationships valued at $8M, 8-year life.
Annual Amortization = 1M straight-line. Typically in SG&A or operating expenses.
Example 3: Units of Production
Delivery truck 20K, expected 500K miles.
Rate = (20K) / 500K = 28.8K.
Higher D&A indicates capital-intensive operations; compare to capex for maintenance levels.
Presentation in the Income Statement
D&A is reported as:
Common Locations
- Cost of Revenue (production-related depreciation)
- Operating Expenses/SG&A (administrative assets, intangibles)
- Separate Depreciation & Amortization line in detailed statements
- Aggregated in total operating expenses
Reduces operating income; footnotes disclose policy, methods, and breakdown.
Importance in Financial Analysis
D&A is fundamental for:
- EBITDA (add back non-cash)
- Measuring capital intensity (D&A / Revenue)
- Estimating maintenance capex (often close to depreciation)
- Assessing tax efficiency (shield value)
High D&A sectors (manufacturing, telecom) vs. low (software, services). Trends vs. capex reveal growth vs. maintenance spending.
Warning: Extending useful lives reduces D&A expense, boosting earnings—compare policies and asset age profiles.