Online Sum of Years Digits Depreciation Calculator
Cost, salvage value, and useful life. Sum-of-years-digits depreciation per year (front-loaded).
Frequently Asked Questions
- What is sum-of-years-digits (SYD)?
- Front-loaded method. Sum = 1+2+...+life. Year n fraction = (life - n + 1) / sum. Depreciation = (cost - salvage) × fraction.
- How is the sum computed?
- Sum of digits = life × (life + 1) / 2. E.g. 5 years → 5+4+3+2+1 = 15.
- When is SYD used?
- When you want more expense early (like DDB) but with a defined schedule that fully depreciates to salvage by end of life.
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