41 The items within a class of property, plant and equipment are revalued simultaneously to avoid selective
revaluation of assets and the reporting of amounts in the financial statements that are a mixture of costs and
values as at different dates. However, a class of assets may be revalued on a rolling basis provided revaluation
of the class of assets is completed within a short period and provided the revaluations are kept up to date.
42 An increase in the carrying amount of an asset arising on revaluation
should be credited directly to owners’ interests under the heading of revaluation surplus. However, the
increase should be recognised in the statement of profit and loss to the extent that it reverses a revaluation
decrease of the same asset previously recognised in the statement of profit and loss.
43 A decrease in the carrying amount of an asset arising on revaluation
should be charged to the statement of profit and loss. However, the decrease should be debited directly to
owners’ interests under the heading of revaluation surplus to the extent of any credit balance existing in
the revaluation surplus in respect of that asset.
44. The revaluation surplus included in owners’ interests in respect of an item of property, plant and
equipment may be transferred to the revenue reserves when the asset is derecognised. This may involve
transferring the whole of the surplus when the asset is retired or disposed of. However, some of the surplus may
be transferred as the asset is used by an enterprise. In such a case, the amount of the surplus transferred
would be the difference between depreciation based on the revalued carrying amount of the asset and depreciation
based on its original cost. Transfers from revaluation surplus to the revenue reserves are not made through the
statement of profit and loss.
45. Each part of an item of property, plant and equipment with a cost that is significant in relation
to the total cost of the item should be depreciated separately.
46 An enterprise allocates the amount initially recognised in respect of an item of property, plant and equipment to
its significant parts and depreciates each such part separately. For example, it may be appropriate to
depreciate separately the airframe and engines of an aircraft, whether owned or subject to a finance lease.
47 A significant part of an item of property, plant and equipment may have a useful life and a depreciation method
that are the same as the useful life and the depreciation method of another significant part of that same item.
Such parts may be grouped in determining the depreciation charge.
48 To the extent that an enterprise depreciates separately some parts of an item of property, plant and equipment, it
also depreciates separately the remainder of the item. The remainder consists of the parts of the item that are
individually not significant. If an enterprise has varying expectations for these parts, approximation
techniques may be necessary to depreciate the remainder in a manner that faithfully represents the consumption
pattern and/or useful life of its parts.
49 An enterprise may choose to depreciate separately the parts of an item that do not have a cost that is significant
in relation to the total cost of the item.
50. The depreciation charge for each period should be recognised in the
statement of profit and loss unless it is included in the carrying amount of another asset.
51. The depreciation charge for a period is usually recognised in the statement of profit and loss. However,
sometimes, the future economic benefits embodied in an asset are absorbed in producing other assets. In this
case, the depreciation charge constitutes part of the cost of the other asset and is included in its carrying
amount. For example, the depreciation of manufacturing plant and equipment is included in the costs of
conversion of inventories (see AS 2). Similarly, the depreciation of property, plant and equipment used for
development activities may be included in the cost of an intangible asset recognised in accordance with AS 26, Intangible Assets .
Depreciable Amount and Depreciation Period
52 The depreciable amount of an asset should be allocated on a systematic basis over its useful life.
53 The residual value and the useful life of an asset should be reviewed at least at each financial
year-end and, if expectations differ from previous estimates, the change(s) should be accounted for as a change
in an accounting estimate in accordance with AS 5, Net Profit or Loss for the Period, Prior Period
Items and Changes in Accounting Policies .
54 Depreciation is recognised even if the fair value of the asset exceeds its carrying amount, as long as the
asset’s residual value does not exceed its carrying amount. Repair and maintenance of an asset do not
negate the need to depreciate it.
55 The depreciable amount of an asset is determined after deducting its residual value.
56 The residual value of an asset may increase to an amount equal to or greater than its carrying amount. If it does,
depreciation charge of the asset is zero unless and until its residual value subsequently decreases to an amount
below its carrying amount.
57 Depreciation of an asset begins when it is available for use, i.e. , when it is in the location and
condition necessary for it to be capable of operating in the manner intended by management. Depreciation of an
asset ceases at the earlier of the date that the asset is retired from active use and is held for disposal and
the date that the asset is derecognised. Therefore, depreciation does not cease when the asset becomes idle or
is retired from active use (but not held for disposal) unless the asset is fully depreciated. However, under
usage methods of depreciation, the depreciation charge can be zero while there is no production.
58 The future economic benefits embodied in an asset are consumed by an enterprise principally through its use.
However, other factors, such as technical or commercial obsolescence and wear and tear while an asset remains
idle, often result in the diminution of the economic benefits that might have been obtained from the asset.
Consequently, all the following factors are considered in determining the useful life of an asset: