# Double Declining Balance Depreciation Calculator

Depreciation is a business expense, it represents the reduction in value of a long term asset due to wear and tear.

There are various methods used to calculate the depreciation expense one of which is the double declining balance depreciation method. This calculator will perform the double declining balance depreciation calculation for you, and work out the annual depreciation expense and the depreciation rate.

The calculation is carried out using the double declining balance depreciation formula which, each year, takes the net book value of the asset and multiples it by double the straight line depreciation rate.

Double declining rate = 2 / Useful Life

The net book value is the cost of the asset less the accumulated depreciation to date. The method is sometimes referred to as the 200 declining balance method.

Using this method, when the net book value reaches the salvage value, the depreciation expense is stopped.

The formula for double declining balance depreciation is given as follows:

Double Declining Balance Depreciation = Net Book Value x 2 / Useful life

Full details of how the declining balance depreciation method is used can be found in our depreciation tutorials.

## Using the Double Declining Balance Depreciation Calculator

The Excel double declining balance depreciation calculator, available for download below, is used to compute double declining balance depreciation by entering details relating to the asset. The calculator is used as follows:

1. Enter the cost of the asset. The cost of the asset can be found in the long term asset account, asset register, or on the original source document (invoice) for the asset
2. Enter the salvage value. The salvage or residual value is the amount the asset is expected to be worth at the end of its useful life.
3. Enter the useful life. The useful life is the anticipated time in years which the asset is expected to be useful to the business. The double declining balance depreciation calculator works out the double declining balance depreciation rate.
4. Enter the year. Enter the year for which the depreciation expense is required.
For example, if the depreciation is required for year eight of the assets life, enter the number 8. The double declining balance depreciation calculator works out the depreciation expense for that year.