Ind AS 16 Component Accounting for Fixed Assets
Reviewed by Ravi Sisodia · Last reviewed 13 August 2026
Convert the fixed-asset register into separately depreciable economic components with traceable replacement accounting.
Finin2min 2-Minute Summary
- Each significant part of a PPE item with a cost significant relative to the total is depreciated separately.
- Componentisation is an accounting analysis, not simply a split by invoice line or engineering code.
- Replacement or major-inspection accounting requires the carrying amount of the replaced/previous inspection component to be derecognised when the recognition conditions are met.
- Depreciation begins when an asset is available for use, not when it first reaches full production.
- Residual value and useful life are reviewed at least at each financial year-end; changes are generally handled as changes in estimates.
Start with assets that have different consumption patterns
A practical component review begins with high-value assets such as buildings, furnaces, aircraft-like equipment, turbines, heavy manufacturing lines and major leasehold improvements. Engineering should identify parts that are significant to the total cost and have different useful lives or replacement cycles. Finance then maps those parts to the fixed-asset register and depreciation policy.
Do not componentise merely to create more asset codes. The objective is to reflect materially different consumption of economic benefits. Conversely, one composite asset code can understate or overstate depreciation when a short-life component is embedded in a much longer-life structure.
Replacement accounting needs the old component's carrying amount
When a significant component is replaced and the new expenditure qualifies for recognition, the previous component cannot remain buried in the asset balance. The control file should identify or estimate its carrying amount and derecognise it. Major inspections follow similar logic: qualifying inspection cost is capitalised and the carrying amount of the previous inspection is removed.
Depreciation starts when the asset is available for use - when it is in the location and condition necessary to operate as intended by management. Commercial ramp-up, low utilisation or delayed sales do not automatically postpone depreciation.
Worked example: furnace lining
A furnace cost Rs 12 crore, including a refractory lining that is expected to require replacement much earlier than the main shell. If the lining is significant, it should be tracked and depreciated separately. When a new lining is installed, finance records the qualifying new component and derecognises the carrying amount of the old lining. Keeping both the old and new lining in gross block would overstate PPE.
Fixed-asset control file
- Engineering-backed component map and significance assessment.
- Cost allocation methodology when one invoice covers several components.
- Useful life and residual-value rationale by significant component.
- Available-for-use date with commissioning evidence.
- Replacement/inspection derecognition working.
- Annual review of lives, residual values and impairment indicators.
Questions finance teams commonly ask
Does every physical part need a separate asset code?
No. Ind AS 16 requires separate depreciation for significant parts; immaterial parts can be grouped appropriately.
When does depreciation start?
When the asset is available for use, meaning it is in the location and condition necessary for its intended operation.
What happens when a component is replaced?
If the new component qualifies for recognition, the carrying amount of the replaced component is derecognised.
How often are useful life and residual value reviewed?
At least at each financial year-end.
Official sources
- ICAI - Ind AS 16 Property, Plant and Equipment - Paras 43-51: significant components, depreciation and annual review
- ICAI - Compendium 2025-26 - Current Ind AS corpus
- ICAI - Notified Ind AS Rules - Current rules gateway
- Finin2min Ind AS hub - use the standard-level page for broader paragraph-by-paragraph learning.
Disclaimer
Professional-use caution: PPE caution: componentisation, useful lives and replacement accounting depend on engineering evidence, materiality and the asset's actual pattern of consumption. Educational and professional reference only; confirm the current notified text and the facts of your case before relying on this page.