SYD function

This article describes the formula syntax and usage of the SYD function in Microsoft Excel.


Returns the sum-of-years’ digits depreciation of an asset for a specified period.


SYD(cost, salvage, life, per)

The SYD function syntax has the following arguments:

  • Cost    Required. The initial cost of the asset.
  • Salvage    Required. The value at the end of the depreciation (sometimes called the salvage value of the asset).
  • Life    Required. The number of periods over which the asset is depreciated (sometimes called the useful life of the asset).
  • Per    Required. The period and must use the same units as life.


SYD is calculated as follows:


Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter. If you need to, you can adjust the column widths to see all the data.

$ 30,000.00Initial cost
$ 7,500.00Salvage value
10Lifespan in years
FormulaDescription (Result)Result
=SYD(A2,A3,A4,1)Yearly depreciation allowance for the first year (4,090.91)$4,090.91
=SYD(A2,A3,A4,10)Yearly depreciation allowance for the tenth year (409.09)$409.09

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