Calculating depreciation for listed assets
Under the "Depreciation Limits" tab for the Personal Use code annual depreciation limits can be specified for an asset.
If the Depreciation Limit for a Personal Use code is used as the asset's annual depreciation for any of the years that an asset is in service, the asset's basis will not be fully depreciated by the end of the asset's standard life. In this case, you can give the asset a new life span (called a "recovery period"). The recovery period will allow the asset to continue depreciating until the asset's basis reaches zero.