useful life(redirected from Usable Lives)
The amount of time, as determined by the IRS, that an asset is expected to be used. The useful life is important in determining taxes assessed on the depreciated value of the asset each year. Theoretically, an asset's useful life is equal to its absolute physical life, but, because the useful life is an estimation, this is not always the case.
(1) In accounting and taxation,the time period over which an asset is depreciated.(2) In appraisal,the time period during which one can expect a positive cash flow from a property.