Which is the most common form of Declining Balance Depreciation?

Double Declining Balance is the most common form of Declining Balance Depreciation because it accelerates the depreciation expense for an asset more than the standard straight-line method. This method is particularly useful for companies looking to match higher depreciation expenses in the early years of an asset's useful life with higher revenues that the asset generates during that time.

In Double Declining Balance, the depreciation rate is double that of the straight-line method, which means that each year's expense is calculated not on the original cost of the asset but rather on its remaining book value at the start of each year. This results in larger expenses upfront, which can lead to tax benefits in the short term for businesses.

Single Declining Balance, while also a form of accelerated depreciation, does not provide as aggressive a depreciation schedule as the Double Declining method, and Triple Declining Balance is less common and not widely used. Accelerated Depreciation is a broader category that includes various methods of accruing depreciation more rapidly than straight-line, but Double Declining Balance is specifically the most utilized approach in practice.