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SpreadJS Documentation / Formula Reference / Formula Functions / DB
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    This function calculates the depreciation of an asset for a specified period using the fixed‑declining balance method.




    This functions has these arguments:

    Argument Description
    cost Initial cost of the asset
    salvage Value at the end of the depreciation period
    life Number of periods over which the asset is being depreciated
    period Period for which you want to calculate the depreciation; use the same units as the life argument
    month [Optional] Number of months in the first year; if omitted, the calculation uses 12 months


    The fixed-declining balance method computes depreciation at a fixed rate. This function uses the following equation to calculate depreciation for a period:

    (cost – total depreciation from prior periods) x rate


    rate = 1 – ((salvage/cost)^(1/life)), rounded to three decimal places

    Depreciation for the first and last periods is a special case. For the first period, the function uses this equation:

    dep = cost x rate x month/12

    For the last period, the function uses this equation:

    dep = ((cost – total dep. from prior periods) x rate x (12 – month))/12.

    Data Types

    Accepts numeric data for all arguments. Returns numeric data.




    DB(500000,5000,5,1,10) gives the result $25,0833.3333333333

    See Also