Journal entry straight-line depreciation is an accounting process that evenly distributes the cost of a depreciable asset over its useful life. This type of depreciation involves recording periodic entries to the ledger in order to account for the gradual reduction in the value of a tangible fixed asset, such as machinery or office equipment. The journal entries reduce the original cost of the asset and create an expense account to reflect the yearly loss in the asset’s worth. Straight-line depreciation allows businesses to benefit from the tax deductions while accurately reflecting the value of their physical resources.