CA 11.2 (Continued)
(b) In determining the depreciation method to be used for the machine, the objective should be to
allocate the cost of the machine over its useful life in a systematic and rational manner, so that costs
will be matched with the benefits expected to be obtained. In addition to demand, consideration
should be given to the items discussed below, their interrelationships, the relative importance of
each, and the degree of certainty with which each can be predicted:
The expected pattern of costs of repairs and maintenance should be considered. Costs which
vary with use of the machine may suggest the use of the units–of-production method. Costs
Another consideration is the expiration of the physical life of the machine. If the machine wears
out in relation to the passage of time, the straight-line method is indicated. Within this maximum
life, if the usage per period varies, the units-of-production method may be appropriate.
The machine may become obsolete because of technological innovation; it may someday be
more efficient to replace the machine even though it is far from worn out. If the probability is high
Situation III. Depreciation rates should be adjusted in order that the operating sawmills which are to be
replaced will be depreciated to their residual value by the time the new facility becomes available. The
step-up in the depreciation rates should be considered as a change in estimate and prior years’ financial
statements should not be adjusted.
The idle mill should be written off immediately as it appears to have no future service potential.