Compute accelerated depreciation with the sum-of-years-digits method using year = (n - k + 1) / SYD x (cost - salvage).
年折旧 = (n−k+1)/SYD × (C−S),SYD = n(n+1)/2。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Sum-of-the-years'-digits | Year-t depreciation = (cost − residual) × (life − t + 1) / Σ(1..life) | Accelerated method (Kieso, Intermediate Accounting) |