# DDB Function

The DDB function is one of the financial functions. It is used to calculate the depreciation of an asset for a specified accounting period using the double-declining balance method.

The DDB function syntax is:

DDB(cost, salvage, life, period[, [factor]])

where

cost is the cost of the asset.

salvage is the salvage value of the asset at the end of its lifetime.

life is the total number of the periods within the asset lifetime.

period is the period you wish to calculate depreciation for. The value must be expressed in the same units as life.

factor is the rate at which the balance declines. It is an optional argument. If it is omitted, the function will assume factor to be 2.

Note: all the values must be positive numbers.

The values can be entered manually or included into the cell you make reference to.

To apply the DDB function,

1. select the cell where you wish to display the result,
2. click the Insert function icon situated at the top toolbar,
   or right-click within a selected cell and select the Insert Function option from the menu,
   or click the icon situated at the formula bar,
3. select the Financial function group from the list,
4. click the DDB function,
5. enter the required arguments separating them by commas,
6. press the Enter button.

The result will be displayed in the selected cell.