What factor is crucial in determining straight-line depreciation?

The crucial factor in determining straight-line depreciation is the asset's useful life and salvage value. Straight-line depreciation is a method used to allocate the cost of an asset over its useful life systematically.

To calculate straight-line depreciation, you need to know two main components: the initial cost of the asset and its salvage value, which is the estimated residual value at the end of its useful life. The useful life is the period over which the asset is expected to be used effectively.

The formula for straight-line depreciation is typically:

(Initial Cost - Salvage Value) / Useful Life.

This calculation helps businesses understand the annual expense they can allocate for asset depreciation, which in turn affects their financial statements and tax considerations.

In contrast, considering the current market value of the asset or the amount of use or wear does not directly relate to the straight-line method, as this method does not factor in any fluctuations in market value or the varying degree of wear. Additionally, relying solely on the initial purchase price ignores the necessary adjustment for salvage value, preventing a true representation of the asset's financial impact over its lifespan.