Use the SLN formula of Excel to determine the straight line depreciation of an asset over a life time. SLN Formula in Excel Returns the straight-line depreciation of an asset for one period. Syntax SLN(cost, salvage, life) The SLN 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). Example 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. Data Description $30,000 Cost $7,500 Salvage value 10 Years of useful life Formula Description Result =SLN(A2, A3, A4) The depreciation allowance for each year. $2,250
