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


Returns the depreciation of an asset for a specified period using the fixed-declining balance method.


DB(cost, salvage, life, period, [month])

The DB function syntax has the following arguments:



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.

$1,000,000Initial cost
$100,000Salvage value
6Lifetime in years
=DB(A2,A3,A4,1,7)Depreciation in first year, with only 7 months calculated$186,083.33
=DB(A2,A3,A4,2,7)Depreciation in second year$259,639.42
=DB(A2,A3,A4,3,7)Depreciation in third year$176,814.44
=DB(A2,A3,A4,4,7)Depreciation in fourth year$120,410.64
=DB(A2,A3,A4,5,7)Depreciation in fifth year$81,999.64
=DB(A2,A3,A4,6,7)Depreciation in sixth year$55,841.76
=DB(A2,A3,A4,7,7)Depreciation in seventh year, with only 5 months calculated$15,845.10

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