is a financial concept covered in this article. The Non-Cash Allocation of Tangible Fixed Asset Costs
You can't take the same actions as everyone else and expect to outperform.
Depreciation on the income statement is the systematic, non-cash expense that allocates the cost of tangible long-term assets (property, plant, and equipment, or PP&E) over their estimated useful lives. It reflects the wear and tear, obsolescence, or usage of assets like buildings, machinery, vehicles, and furniture. Depreciation reduces reported earnings and taxable income without affecting cash outflows, serving as a key add-back in cash flow statements and EBITDA calculations. This charge is essential for matching asset costs to the revenues they generate and provides critical insight into a company’s capital intensity, asset age, and maintenance requirements.
What is Depreciation?
Depreciation is the accounting method used to allocate the depreciable cost of tangible fixed assets over their useful lives, reflecting the decline in economic value due to usage, time, or obsolescence.
Under US GAAP (ASC 360) and IFRS (IAS 16), depreciation begins when the asset is ready for use and continues until fully depreciated or disposed. Land is not depreciated (indefinite life).
It is a non-cash charge that reduces operating income and provides a tax shield (deductible in most jurisdictions), but actual cash was spent earlier on capex.
Depreciation is highest in capital-intensive industries like manufacturing, transportation, utilities, and telecom.
Common Depreciation Methods
Companies choose methods based on asset type and expected benefit pattern:
Primary Methods
- Straight-Line: (Cost − Salvage Value) ÷ Useful Life — most common for simplicity and reporting
- Accelerated (e.g., Double-Declining Balance): Higher early expense, matches faster early usage
- Units of Production: (Cost − Salvage) × (Units This Period / Total Estimated Units) — ideal for machinery
Changes in method or estimates (life/salvage) are prospective under both GAAP and IFRS.
Tip: Tax depreciation (e.g., MACRS in US) often differs from book—creates deferred taxes.
“You can’t take the same actions as everyone else and expect to outperform.”
— Howard Marks, Co-Chairman, Oaktree Capital Management Oaktree Memo: ‘Dare to Be Great’ (2006)
Examples of Depreciation Expense
Example 1: Straight-Line
Delivery trucks cost 200K, 5-year life.
Annual Depreciation = (0.2M) / 5 = $360K. Expensed in operating expenses or cost of revenue.
Example 2: Units of Production
Mining equipment 1M, expected 1M hours.
Rate = (1M) / 1M = 1.08M.
Example 3: Accelerated
Machine $500K, no salvage, 5-year life, double-declining.
Year 1: 40% × 200K (higher early charge).
Straight-line dominates financial reporting for predictability.
Presentation in the Income Statement
Depreciation is reported as:
Common Locations
- Cost of Revenue (production/manufacturing assets)
- Operating Expenses/SG&A (administrative assets)
- Separate Depreciation & Amortization line
- Aggregated in total operating expenses
Reduces operating income; detailed policy and amount in footnotes.
Importance in Financial Analysis
Depreciation is crucial for:
- EBITDA (add back non-cash)
- Measuring capital intensity (Depreciation / Revenue)
- Estimating maintenance capex (often approximates depreciation)
- Assessing asset age and replacement needs
High depreciation signals heavy fixed assets; low may indicate asset-light model or underinvestment.
Warning: Extending useful lives lowers depreciation, boosting earnings—compare policies and capex trends.