AS 10 prescribes the accounting treatment for property, plant and equipment (PPE) — the tangible long-term assets such as land, buildings, machinery, vehicles, and equipment that a business uses to carry on its operations. These are typically among the most significant assets on a balance sheet, and the standard governs how they are recognised, measured initially and subsequently, depreciated, and eventually removed from the books. (The revised AS 10 absorbed the former AS 6 on depreciation, so depreciation is now dealt with within AS 10.)
Objective and recognition
The objective is to prescribe the accounting treatment for PPE so that users can discern information about an enterprise's investment in its PPE and the changes in such investment. Property, plant and equipment are tangible items that are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes, and are expected to be used during more than one period.
The cost of an item of PPE should be recognised as an asset if, and only if, it is probable that future economic benefits associated with the item will flow to the enterprise, and the cost of the item can be measured reliably. This recognition test applies both to the initial cost and to subsequent costs (such as additions and replacements).
Measurement at recognition — cost
An item of PPE that qualifies for recognition is measured at its cost. Cost comprises: the purchase price (including import duties and non-refundable purchase taxes, after deducting trade discounts and rebates); any costs directly attributable to bringing the asset to the location and condition necessary for it to be capable of operating in the manner intended (such as site preparation, delivery and handling, installation and assembly, and professional fees); and the initial estimate of the costs of dismantling, removing the item, and restoring the site on which it is located, where the enterprise has an obligation for those costs. Costs that are *not* part of the cost — and so are expensed — include costs of opening a new facility, introducing a new product (advertising and promotion), conducting business in a new location, administration and general overheads, and costs incurred while an asset capable of operating is not yet brought into use or is operated below capacity.
Componentisation
A practically important feature of AS 10 is component accounting. Each part of an item of PPE with a cost that is significant in relation to the total cost of the item should be depreciated separately if it has a useful life different from the rest of the asset. For example, the engine of an aircraft, or a significant component of a large machine, may have a shorter life than the body and is depreciated over its own life and replaced separately. This produces a more accurate depreciation charge than treating a complex asset as a single unit.
Depreciation
Depreciation is the systematic allocation of the depreciable amount of an asset over its useful life. The depreciable amount is the cost of the asset (or other amount substituted for cost) less its residual value. Depreciation is recognised even if the fair value of the asset exceeds its carrying amount, as long as the residual value does not exceed the carrying amount. Each part of an item of PPE with a significant cost is depreciated separately (componentisation, above).
The depreciation method used should reflect the pattern in which the asset's future economic benefits are expected to be consumed. Common methods include the straight-line method (an equal charge each period) and the diminishing balance method (a higher charge in earlier years). The method, the useful life, and the residual value should be reviewed at least at each financial year-end, and if expectations differ from previous estimates, the change is accounted for as a change in accounting estimate (prospectively, per AS 5). Depreciation begins when the asset is available for use and continues until it is derecognised, even if it is idle during a period (subject to the depreciable amount).
Subsequent measurement — cost model and revaluation model
After recognition, an enterprise should choose either the cost model (carry the asset at cost less accumulated depreciation and accumulated impairment losses) or the revaluation model (carry at a revalued amount, being fair value at the date of revaluation less subsequent accumulated depreciation and impairment) as its accounting policy, and apply it to an entire class of PPE. If the revaluation model is used, revaluations should be made with sufficient regularity to ensure the carrying amount does not differ materially from fair value. An increase on revaluation is generally credited to a revaluation reserve (in equity), while a decrease is generally charged to the profit and loss account, with specific rules where there is a prior reserve or prior charge for the same asset. Impairment of PPE is dealt with under AS 28.
Derecognition
The carrying amount of an item of PPE is removed from the balance sheet (derecognised) on disposal, or when no future economic benefits are expected from its use or disposal. The gain or loss on derecognition is the difference between the net disposal proceeds and the carrying amount, and is recognised in the profit and loss account (gains are not classified as revenue).
A brief illustration
A company buys a machine for ₹50 lakh, pays ₹2 lakh for delivery and installation, and estimates ₹3 lakh will be needed to dismantle and restore the site at the end of its life (an obligation it has). The cost recognised is ₹55 lakh. The machine has an estimated useful life of 10 years and a residual value of ₹5 lakh, so the depreciable amount is ₹50 lakh, giving straight-line depreciation of ₹5 lakh per year. If a significant component — say a motor costing ₹10 lakh — has a 5-year life, it is depreciated separately over 5 years and replaced when worn, with the rest of the machine depreciated over 10 years.
How AS 10 compares with Ind AS 16
AS 10 (revised) was specifically aligned with Ind AS 16, Property, Plant and Equipment, so the two are now quite close — both use the recognition test, cost-based initial measurement, componentisation, depreciation over useful life with review of method/life/residual value, and a choice between cost and revaluation models. Differences are mostly in detail. One area of difference relates to revaluation: Ind AS 16 requires the revaluation model to be applied with fair value measured under Ind AS 113, and has specific mechanics; AS 10 has its own revaluation provisions. Component accounting and the treatment of dismantling costs are broadly similar. For most ordinary PPE, the two standards produce comparable accounting, reflecting the deliberate convergence of the revised AS 10 with Ind AS 16.
Common pitfalls
Recurring problems include expensing costs that should be capitalised (or vice versa); failing to componentise significant parts with different useful lives; not reviewing useful life, residual value, and depreciation method at year-end; continuing to depreciate using a method that no longer reflects the consumption pattern; and applying the revaluation model to individual assets rather than an entire class.
Why this is cleaner on a unified system
A fixed-asset register that is connected to the accounting ledger keeps PPE cost, depreciation, componentisation, and disposals consistent with the financial statements automatically, rather than maintaining a separate asset list that must be reconciled to the accounts. When asset additions, depreciation runs, and disposals flow through one system, the carrying amounts in the balance sheet always tie to the underlying asset records — part of the broader reliability a unified platform brings to the accounts.
This article is a detailed educational summary of AS 10 in plain language. It is not a substitute for the full text of the standard. Accounting standards are amended from time to time; always verify the current, authoritative text of AS 10 as issued by the ICAI before relying on it, and consult a qualified chartered accountant for application to your specific circumstances.