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The period from the acquisition of the asset to the time when the asset, while physically able to provide a service, ceases to be the lowest cost alternative to satisfy a particular level of service. The economic life is at the maximum when equal to the physical life, however obsolescence will often ensure that the economic life is less than the physical life. IIMM
The Economic Life of an asset is the length of time for which maintaining and operating the asset remains the lowest cost alternative for providing a nominated level of service. LGAM
The period over which an asset is expected to be economically useable by one or more users or the number of production or similar units expected to be obtained from the asset by one or more users. AIFMG 2009
