### Definition

Calculates the depreciation of an asset for a specified period using the arithmetic declining balance method.

### Sample Usage

### Syntax

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

`cost`

- The initial cost of the asset.

`salvage`

- The value of the asset at the end of depreciation.

`life`

- The number of periods over which the asset is depreciated.

`period`

- The single period within `life`

for which to calculate depreciation.

`month`

- **[** OPTIONAL - `12`

by default **]** - The number of months in the first year of depreciation.

### Notes

`life`

and `period`

must be measured int he same units.

### See Also

`SYD`

: Calculates the depreciation of an asset for a specified period using the sum of years digits method.

`SLN`

: Calculates the depreciation of an asset for one period using the straight-line method.

`DDB`

: Calculates the depreciation of an asset for a specified period using the double-declining balance method.

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