SYD Function in Excel: Sum-of-Years’ Digits Depreciation

SYD Function in Excel: Sum-of-Years’ Digits Depreciation featured illustration

📎 This article includes 1 downloadable practice file ↓

⏱ 2 min readUpdated 28 September 2026

FinancialLevel: ExpertAvailable in: Excel 2007+

In this article
  1. Syntax
  2. Examples
  3. Example 1
  4. SYD in practice
  5. Where you will use it
  6. Worked example
  7. Mistakes people make
  8. Related functions
  9. Continue learning

SYD is another accelerated method, gentler than DDB. For a 5-year life the fractions are 5/15, 4/15, 3/15 and so on.

Advertisement

Syntax

=SYD(cost, salvage, life, per)
Argument What it means
per Year number.

Examples

Example 1

=SYD(90000, 10000, 5, 1)

Year 1: 80,000 × 5/15 = ₹26,667.

SYD in practice

Where you will use it

  • Sum-of-years depreciation
  • Accelerated write-off
  • Compare with SLN

Worked example

YearFormulaResult
1=SYD(500000,50000,5,A2)₹ 1,50,000.00
2=SYD(500000,50000,5,A3)₹ 1,20,000.00
5=SYD(500000,50000,5,A4)₹ 30,000.00

Results calculated in Excel.

Mistakes people make

MistakeWhat to do instead
Year beyond life#NUM!
Indian taxUse WDV rates for income tax

DDB · SLN

📚 Part of the free Excel course: Beginner → Expert · Try it in the Formula Lab or ask the AI Helper.

⚡ Interactive Practice Lab & Formula Tester:

Test formulas dynamically in our web formula laboratory or download the companion Excel workbook.

📎 Practice files for this article

  • 📗
    Practice workbook: Financial: EMI, SIP, NPV, IRR, depreciation23 tasks on realistic sales data — type your formula, the Check column turns green when it is right. Answers sheet included.
    ⬇ XLSX · 35 KB

Free to use for learning. Files with macros (.bas) are plain text — import them with Alt+F11 → File → Import File, and always test on a copy.

✨ Ask AI about this article

Stuck on a step? Ask a question and the AI answers using this article.

Free · AI can be wrong