What is the period of time which the cost of an asset is allocated to depreciation expence?

The period of time over which the cost of an asset is allocated to depreciation expense is typically referred to as the asset's useful life. This is the duration for which the asset is expected to be economically beneficial to the company. Useful life can vary based on the type of asset, its expected wear and tear, and industry standards, and it is determined during the asset's acquisition. Depreciation allocates the cost of the asset over this useful life to match expenses with the revenues generated by the asset.