Revenue expenditure, pollution control depreciation and actual payment under tax law shaped mixed outcomes on deduction claims.

Replacement expenditure was treated as revenue where the new machinery improved efficiency without increasing installed production capacity or creating an enduring capital advantage. Fly ash silo equipment qualified for 100% depreciation as pollution control machinery because it contained and channelised fly ash within the manufacturing process. Adjustment of a loan against earlier interest liability was not treated as actual payment under section 43B without proof of real disbursement and discharge. Excise duty and customs duty were excluded from total turnover for export deduction computation under section 80HHC, as they lacked the relevant nexus with sale proceeds. Full depreciation on dumpers was disallowed because the assessee failed to prove receipt and use within the qualifying period.

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Issues: (i) Whether expenditure incurred on replacement of old machinery by new machinery was revenue expenditure under section 37; (ii) whether 100% depreciation was allowable on fly ash silo as pollution control equipment; (iii) whether the amount adjusted by IFCI towards earlier interest liability was actual payment under section 43B; (iv) whether excise duty, customs duty and windmill power receipts were to be excluded from total turnover for section 80HHC; (v) whether full depreciation was allowable on dumpers notwithstanding lack of evidence of use for more than 180 days.

Issue (i): Whether expenditure incurred on replacement of old machinery by new machinery was revenue expenditure under section 37.

Analysis: The replacement was examined in the context of section 37 and the governing test of whether the expenditure resulted in an increase in production capacity or brought into existence an enduring advantage of a capital nature. The installed capacity remained unchanged before and after replacement, and the record showed that the new system improved efficiency without enhancing capacity. On that factual basis, the expenditure was treated as revenue in nature.

Conclusion: The issue was answered in favour of the assessee.

Issue (ii): Whether 100% depreciation was allowable on fly ash silo as pollution control equipment.

Analysis: The relevant entry in Appendix I of the Income-tax Rules, 1962 covers air pollution control equipment, including ash handling and evacuation systems. The silos were found to contain fly ash and channelise it into the manufacturing process, thereby achieving containment and effective removal of the pollutant from the premises. The requirement of evacuation was held to be satisfied by such effective utilisation and disposal within the process.

Conclusion: The issue was answered in favour of the assessee.

Issue (iii): Whether the amount adjusted by IFCI towards earlier interest liability was actual payment under section 43B.

Analysis: Section 43B requires actual payment as a condition for deduction. The assessee did not produce material to establish that the fresh loan was in fact disbursed and that the interest liability was actually discharged by payment. Mere adjustment or extinguishment of liability was held insufficient without proof of real outgo.

Conclusion: The issue was answered in favour of the revenue.

Issue (iv): Whether excise duty, customs duty and windmill power receipts were to be excluded from total turnover for section 80HHC.

Analysis: The computation under section 80HHC was applied on the principle that only receipts having nexus with sale proceeds and element of profit form part of turnover for export deduction purposes. Statutory levies such as excise duty and customs duty were treated as outside the turnover base for the formula, consistent with the export incentive objective of the provision.

Conclusion: The issue was answered in favour of the assessee.

Issue (v): Whether full depreciation was allowable on dumpers notwithstanding lack of evidence of use for more than 180 days.

Analysis: The claim depended on proof that the dumpers were received and put to use within the period qualifying for full depreciation. The assessee failed to produce evidence showing receipt and user before the relevant cut-off date, and the concept of passive user was found inapplicable on those facts. The Tribunal's contrary view was therefore not sustained.

Conclusion: The issue was answered in favour of the revenue.

Final Conclusion: The appeal succeeded on some questions and failed on others, leaving the assessee and the revenue each with partial success on the substantive tax issues.

Ratio Decidendi: For allowance under section 37, replacement expenditure is revenue where installed production capacity remains unchanged and no enduring capital advantage is shown; under section 43B, deduction requires proof of actual payment; and for section 80HHC, statutory levies without nexus to sale proceeds are excluded from total turnover.

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