Compare
| Method | Pattern | Best For |
|---|---|---|
| Straight-line | Equal amounts each year | Most common, simplest |
| Double-declining balance | Accelerated early, less later | Assets losing value quickly (tech equipment) |
| Sum-of-years digits | Accelerated but less extreme | Moderate front-loading |
| Units of production | Based on actual usage | Mining equipment, vehicles |
Key point
Accelerated methods report lower earnings early and higher earnings later. This is purely a timing difference, not an economic one. But it affects quarter-to-quarter earnings comparisons.
Key insight
Check-in
A company's PP&E shows $500M gross, $300M accumulated depreciation, $200M net. They use straight-line over 20 years. What does this tell you about fleet age and replacement risk?
Check your understanding
Sit with the ideas.
A machine was purchased for $120,000 and has accumulated depreciation of $45,000. It is sold for $70,000. What is the gain or loss on the sale?
Why: