A replacement has two accounting sides
Under AS 10, qualifying replacement expenditure is recognised in the asset’s carrying amount, while the carrying amount of the replaced part is derecognised. Adding the new invoice without removing the old component can overstate PPE even where the new invoice is correctly capitalised. Routine servicing, abnormal waste and costs incurred after the asset is ready for its intended operation require separate assessment rather than automatic capitalisation.
Use the AS framework and the recognition criteria
ICAI’s AS 10 Property, Plant and Equipment requires probable future economic benefits and reliably measurable cost for recognition. Paragraphs 13–15 address parts and major inspections; paragraphs 17–23 cost composition and exclusions; paragraph 57 the start of depreciation; and paragraph 78 derecognition of replaced parts. Sources were checked on 22 October 2026. This article addresses AS reporting, not a substitute for an Ind AS 16 analysis or an income-tax depreciation calculation.
PPE covers qualifying tangible items held for production, supply, rental or administrative use and expected to be used for more than twelve months. The standard requires judgement about the recognition unit. A large project can contain separate significant components, while ordinary consumables and qualifying standby equipment can have different classifications. The mere fact that an invoice was posted to repairs, stores or capital work in progress does not determine the accounting result.
Trace costs to location and intended operating condition
Cost includes purchase price after trade discounts and rebates, import duties and non-refundable purchase taxes, and directly attributable expenditure needed to bring the asset to its intended location and operating condition. Initial delivery, site preparation, installation, assembly and relevant professional or directly involved employee costs can qualify on their facts. Recoverable input tax is not a non-refundable purchase tax merely because it appears in the supplier invoice.
The same standard excludes such items as opening and inauguration costs, product promotion, staff training associated with conducting business in a new location, and general administration overheads. Capitalisation also stops once the item reaches the location and condition necessary to operate as management intends. Initial operating losses, costs of using an already capable asset below full capacity and relocation costs are not added simply because the business has not yet achieved its sales target.
Self-construction follows the same principles. Eliminate internal profits and exclude abnormal wasted material, labour or other resources. Borrowing costs require their own AS 16 analysis. Dismantling and restoration obligations, where relevant, require the proper recognition and measurement framework; the simple examples below assume no such liability or qualifying borrowing-cost complication.
Derecognise replaced parts even if the old register was not componentised
Identify the original cost, accumulated depreciation and any impairment attributable to the old part. Its remaining carrying amount is removed when the replacement is recognised. AS 10 does not waive derecognition merely because the original acquisition was recorded as one machine. When determining the old carrying amount is impracticable, the standard allows use of replacement or future similar inspection cost as an indication of the original component cost, with a supported calculation. The current new-part invoice is not automatically the old part’s net book value.
A major inspection necessary for continuing operation can be recognised as a replacement when the criteria are met, regardless of whether physical parts are replaced. Remove any remaining carrying amount of the previous inspection component. Ordinary daily servicing is a different category. Obtain the engineering description, inspection purpose, scope and expected benefit before treating every maintenance shutdown as a new capital component.
Spares and the depreciation start date need their own evidence
AS 10 paragraph 8 recognises spare parts, standby equipment and servicing equipment as PPE when they meet the PPE definition; otherwise they are inventory. Do not apply a blanket rule that all stores are inventory or that every expensive spare is PPE. Document its intended function, duration and availability. If classified as inventory, its later consumption is assessed under the relevant inventory and expense rules rather than depreciated as PPE by default.
Depreciation begins when the asset is available for use: in the required location and condition to operate as management intends. Waiting for the first customer order or commercial production is not necessarily a reason to defer it. Under a time-based method, being temporarily idle does not ordinarily stop depreciation. The examples assume stated useful lives, residual values and simple consistent month-based allocation solely for illustration; they do not prescribe Schedule II lives or income-tax rates.
Reconcile gross cost, accumulated depreciation and net movement
The fixed asset register should show the new part separately, the cost and depreciation removed for the old part, and the net effect on carrying amount. Keep repair expense and recoverable taxes outside the capitalised figure where appropriate. Reconcile to the general ledger and financial-statement movements; a net addition line alone can hide a missing disposal. Other current-period depreciation, impairment, disposal proceeds and tax effects must be added where relevant and are excluded from a case unless expressly stated.
Worked illustrations
These illustrations use fictional facts and expressly stated assumptions. Amounts are Indian rupees unless a different currency or unit is specified. They are independent examples, not findings about any actual client.
Illustrative example 1: construct the qualifying purchase cost
Assume machine price ₹10,00,000 less trade discount ₹50,000, non-refundable import duty ₹1,00,000, initial delivery ₹30,000 and installation ₹70,000. Qualifying cost is ₹11,50,000. Staff training ₹40,000 is separately expensed on the stated facts. Assume any GST is fully and validly recoverable and accounted for separately; it is not added to this cost. The duty assumption does not establish the actual levy on any real import.
Illustrative example 2: remove the component being replaced
Machine carrying amount before replacement is ₹20,00,000, including an old component with cost ₹5,00,000 and accumulated depreciation ₹3,50,000. Old carrying amount is ₹1,50,000. A new component costing ₹6,00,000 meets recognition criteria. Revised carrying amount before other depreciation or impairment is ₹20,00,000 − ₹1,50,000 + ₹6,00,000 = ₹24,50,000. With no disposal proceeds, the ₹1,50,000 removal is a loss, not an additional asset.
Illustrative example 3: a major inspection also replaces an old component
An asset’s carrying amount ₹15,00,000 includes previous inspection cost ₹3,00,000 with accumulated depreciation ₹2,40,000. Remaining inspection amount is ₹60,000. New qualifying major inspection costs ₹4,00,000. Revised carrying amount before other movements is ₹15,00,000 − ₹60,000 + ₹4,00,000 = ₹18,40,000. Capitalising ₹4,00,000 without removing ₹60,000 would overstate PPE.
Illustrative example 4: separate standby equipment and consumables
Assume qualifying standby equipment costing ₹8,00,000 meets the PPE definition, is available for intended standby use throughout the year, has supported useful life four years and nil residual value, and uses straight-line depreciation. Annual depreciation is ₹2,00,000. Separately purchased ordinary consumables ₹50,000 are inventory until accounted for on consumption or another relevant inventory event. Neither price alone nor the common stores location decides both classifications.
Illustrative example 5: available for use precedes first production
Assume cost ₹12,00,000, nil residual value and supported ten-year useful life, with consistent straight-line month allocation. The asset is ready for intended operation on 1 October in an April–March year, but production starts 1 January. Annual depreciation is ₹1,20,000 and the six-month allocation is ₹60,000. Deferring solely to January would produce ₹30,000, understating depreciation by ₹30,000 on these stated facts.
Illustrative example 6: exclude abnormal waste and inauguration expenditure
For a self-constructed asset, assume eligible material ₹6,00,000, direct labour ₹3,00,000 and properly attributable normal construction overhead ₹1,00,000. Qualifying cost is ₹10,00,000. Separately identified abnormal waste ₹80,000 and inauguration expense ₹30,000 total ₹1,10,000 and are not capitalised under the stated AS 10 facts. Labelling the entire ₹11,10,000 project expenditure as capital work in progress would not correct that classification.
Ten-step verification table
| Step | Verification | Evidence to retain |
|---|---|---|
| 1 | Establish the reporting framework and asset scope. | AS/Ind AS basis and intended use. |
| 2 | Apply recognition criteria to each expenditure. | Benefits and reliable-cost evidence. |
| 3 | Reconcile price, discounts and non-refundable taxes. | Invoice and tax-recoverability analysis. |
| 4 | Identify directly attributable costs and cut-off. | Engineering readiness and cost map. |
| 5 | Exclude non-qualifying and abnormal expenditure. | Training, opening and waste schedules. |
| 6 | Identify old parts or inspection components replaced. | Technical records and original register. |
| 7 | Compute old carrying amount and derecognise it. | Cost, depreciation, impairment and removal working. |
| 8 | Classify spares and standby equipment on facts. | Function, duration and availability assessment. |
| 9 | Set the depreciation start and supported estimates. | Available-for-use certificate and useful-life/residual review. |
| 10 | Reconcile register, ledger and financial statements. | Gross-cost, accumulated-depreciation and carrying-value bridge. |
Sixteen practitioner FAQs
1. Does every expensive repair qualify for capitalisation?
No. Apply recognition criteria and identify the actual component or benefit.
2. Can new-part cost be added without removing the old part?
No. AS 10 requires derecognition of the replaced part’s carrying amount.
3. What if the old part was not separately recorded?
The standard still requires removal; use a supported estimation approach where determining the old amount is impracticable.
4. Is the new replacement price automatically the old net book value?
No. It may inform the original-cost estimate, but depreciation and other relevant adjustments still matter.
5. Can a major inspection qualify without changing physical parts?
Yes, if the recognition criteria and continuing-operation inspection facts are met.
6. Must the previous inspection’s remaining amount be removed?
Yes. Do not retain two inspection components for the same replaced benefit.
7. Are routine servicing costs the same as major inspections?
No. Establish the scope and nature of the expenditure.
8. Are all spare parts inventory?
No. AS 10 applies when the PPE definition is met; otherwise they are inventory.
9. Does an unused standby asset avoid depreciation automatically?
No. Assess whether it is available for its intended use and apply the appropriate depreciation method.
10. Can recoverable GST be included as a non-refundable purchase tax?
Not merely because it is on the invoice. Verify recoverability and account consistently.
11. Are staff training and inauguration ordinarily capital costs here?
The stated AS 10 exclusions address such expenditure; assess the actual facts.
12. Can abnormal construction waste be capitalised?
Not under the stated AS 10 self-construction rule.
13. Does capitalisation continue until full sales capacity is achieved?
No. The intended location and operating condition determine the relevant cessation point.
14. Does depreciation start only on the first commercial invoice?
No. Availability for intended use is the AS 10 test.
15. Do these useful lives determine income-tax depreciation?
No. Tax depreciation and company-law useful-life requirements need their separate applicable analysis.
16. Which closing reconciliation catches missing old components?
A bridge showing new gross additions, old cost and accumulated depreciation removed, and the resulting net carrying amount.
Working-paper organisation
Keep the source documents, calculation and final conclusion together for the same entity and period. If using assureFinancials or other assureOffice tools, use only confirmed available functions and retain this evidence with the output.
Conclusion
Review asset additions and removals together. A supported capitalisation boundary, replacement-component derecognition and available-for-use date make the register reflect the asset that actually remains in operation.