Issues: Whether the sale of M.S. pipes imported from Korea and used in the execution of the ash handling plant contract for NTPC was a sale in the course of import within Article 286(1)(b) of the Constitution of India and section 5(2) of the Central Sales Tax Act, 1956.

Analysis: The contract documents showed that the project was a single turn-key works contract, even though it was split on paper into supply and erection portions. The obligation to import any particular foreign goods did not arise from the contract itself, because materials of the required specification could be procured from other sources and the foreign seller had no contractual link with NTPC. The import was undertaken by the assessee as actual user and the imported goods were not shown to have been sold under a contract that occasioned the import. A sale is in the course of import only when the import is the result of the sale and the movement of goods is inextricably connected with the contract of sale; that connection was absent here.

Conclusion: The sale was not in the course of import and was liable to tax.

Issues: (i) Whether the Tamil Nadu General Sales Tax (Third Amendment) Act, 1999 and the Tamil Nadu Additional Sales Tax (Amendment) Act, 1999, giving retrospective effect to levy purchase tax on sugarcane at a flat rate and retaining additional sales tax on ad valorem basis, were unconstitutional or ultra vires Articles 14, 19(1)(g), 301 and 304(b) of the Constitution of India. (ii) Whether demand notices issued for differential tax/additional tax or for filing revised returns without following the assessment and recovery procedure under the Act and Rules were valid.

Issue (i): Whether the retrospective levy and the amended scheme were unconstitutional or ultra vires Articles 14, 19(1)(g), 301 and 304(b) of the Constitution of India.

Analysis: The amended levy was upheld as a fiscal measure within legislative competence. The Court held that taxing legislation enjoys wide latitude in classification, and a uniform flat rate based on weight did not become invalid merely because mills with different recovery percentages experienced different impacts. The State average recovery was treated as a rational basis for fixing the flat rate, and the levy was found neither confiscatory nor arbitrary. The retrospective feature was also held permissible, since the amendment implemented a policy choice and did not merely seek to nullify an earlier judicial decision without curing any defect. The plea based on Articles 301 and 304(b) failed because the levy was treated as taxation simpliciter and not as an impermissible barrier to trade.

Conclusion: The retrospective levy under the two amending Acts was held valid and constitutional, and the challenge on merits failed.

Issue (ii): Whether the demand notices for differential tax/additional tax or directions to file revised returns were valid without following the statutory procedure for assessment and recovery.

Analysis: The Court held that, although the amended levy itself was valid, the authorities could not bypass the assessment and recovery mechanism prescribed by the Act and Rules. For completed assessments, demand could be raised only by finalising assessment under the Act; for the relevant provisional year, revision had to follow the statutory notice procedure. Direct demand notices calling upon the assessees to pay differential tax or file revised returns without following those steps were therefore procedurally infirm.

Conclusion: The demand notices were quashed, with liberty to the authorities to proceed afresh in accordance with law.

Final Conclusion: The constitutional challenge to the retrospective levy failed, but the impugned demand notices were set aside for non-compliance with the prescribed assessment procedure, leaving the authorities free to initiate fresh action lawfully.

Ratio Decidendi: A retrospective fiscal amendment fixing a uniform tax basis will be sustained if it is within legislative competence and founded on a rational classification, but recovery demands must still conform to the statutory assessment and recovery procedure and cannot be made by bypassing the Act and Rules.

Issues: Whether the registration certificate could lawfully omit coverage for goods intended to be purchased for resale, and whether the dealer could be allowed to seek amendment of the registration certificate to include such intended purchases.

Analysis: The statutory scheme under the West Bengal Sales Tax Rules, 1995 required the dealer to state the class or classes of goods purchased or intended to be purchased for resale, and the registration certificate was meant to reflect entitlement to concessional rate coverage. Although the application form did not expressly provide a separate space for intended purchases and the dealer had not specifically articulated that aspect with precision, the omission in the form could not defeat a benefit that the law itself contemplated. A statutory form is subordinate to the enabling provision and may be adjusted to conform to the statute. Since rule 12 provided for amendment of the registration certificate, the appropriate course was not cancellation but an amendment application, so that the dealer could seek coverage for intended purchases, and if the competent authority was satisfied under rule 7, the certificate could be modified accordingly.

Conclusion: The dealer was entitled to apply for amendment of the registration certificate to obtain coverage for intended purchases for resale, and the authority was required to consider such application in accordance with law.

Issues: (i) whether depreciation in plant and machinery can be taken into account while computing investment in a small-scale industrial unit for eligibility to tax exemption under rule 3(116) of the Bengal Sales Tax Rules, 1941 and rule 41 of the West Bengal Sales Tax Rules, 1995; (ii) whether the rejection of books of account and the resulting best judgment assessment were justified; (iii) whether the turnover tax, interest and penalty required interference.

Issue (i): whether depreciation in plant and machinery can be taken into account while computing investment in a small-scale industrial unit for eligibility to tax exemption under rule 3(116) of the Bengal Sales Tax Rules, 1941 and rule 41 of the West Bengal Sales Tax Rules, 1995

Analysis: Investment in plant and machinery was held to mean the actual money or money's worth put into the business, which does not diminish merely because the assets depreciate over time. Depreciation was treated as an accounting concept and not as a reduction of the original investment for the purpose of the exemption rules. Allowing depreciation to reduce investment would defeat the object of protecting genuinely small units and could make larger units eligible only by efflux of time.

Conclusion: Depreciation cannot be deducted while computing investment. The assessee was not entitled to exemption under either rule.

Issue (ii): whether the rejection of books of account and the resulting best judgment assessment were justified

Analysis: The assessee had not produced essential manufacturing records, quantitative particulars, or reliable supporting material, and had also filed unexplained reconciliation statements. In that situation the assessing officer had a basis to reject the books and proceed on best judgment. The enhancement of gross turnover was not shown to be arbitrary or unreasonably high in the facts proved before the Tribunal.

Conclusion: The rejection of books of account and the best judgment assessment were upheld.

Issue (iii): whether the turnover tax, interest and penalty required interference

Analysis: The turnover tax was payable only for the period when the earlier Act applied, and it had to be recalculated at the correct rate. Interest also needed recalculation because it had been levied on an inapplicable turnover tax component. The delay in filing return justified penalty, but the amount imposed was considered excessive and was reduced to a lower figure.

Conclusion: Turnover tax and interest were directed to be recalculated, and the penalty was reduced.

Final Conclusion: The substantive challenge to the denial of exemption failed, but the assessment was interfered with to the limited extent of recalculation of turnover tax and interest and reduction of penalty, with remand for fresh computation accordingly.

Ratio Decidendi: For exemption based on investment in plant and machinery, the governing test is the actual capital invested in the unit, not the depreciated value of the assets as shown in accounts.

Issues: Whether the assessment order was liable to be quashed for alleged improper service of pre-assessment notice and whether writ jurisdiction could be invoked despite the availability of a statutory appeal.

Analysis: The notices were sent to the known business and residential addresses of the assessee by registered post. The postal endorsements showed that the notices were returned as "not claimed" or "left", and the assessing authority had exhausted the practicable modes of service contemplated under Rule 52 of the Tamil Nadu General Sales Tax Rules, 1959. On the facts, service could not be invalidated merely because the assessee had shifted address without informing the department. The assessee also received the assessment order but did not pursue the statutory appeal, and instead approached the Tribunal only after recovery steps were initiated. In such circumstances, the availability of an efficacious alternative remedy and the delay on the assessee's part disentitled interference under Article 226 of the Constitution of India.

Conclusion: The challenge to the assessment on the ground of improper service and lack of notice failed, and the assessee was not entitled to writ relief.

Ratio Decidendi: Where pre-assessment notices are sent by registered post to the addresses known to the assessing authority and the assessee fails to pursue the statutory appellate remedy, writ interference is not warranted merely on a plea of defective service.

Issues: Whether penalty under section 12(3)(b) and section 12(3)(c) of the Tamil Nadu General Sales Tax Act, 1959 was validly levied for an incomplete return and delayed filing, and whether the order was liable to be interfered with in writ jurisdiction.

Analysis: An assessment based on a return in which the tax and surcharge shown as payable were not paid was treated as an incomplete return, and the assessment consequently fell within section 12(2). On that basis, the difference between the tax assessed and the tax paid attracted section 12(3)(b). Separately, section 12(3)(c) was attracted because the return was filed beyond the due date. The attempt to seek relief under section 55 had already failed, no statutory appeal had been pursued, and the Tribunal found no jurisdictional defect or other ground warranting writ interference, including on the ground of laches.

Conclusion: The penalty levied under section 12(3)(b) and section 12(3)(c) was upheld, and interference in writ jurisdiction was declined.

Final Conclusion: The petition failed in its challenge to the penalty and the refusal to grant rectificatory relief, and the assessment-related orders were sustained.

Ratio Decidendi: Where a return is incomplete because tax shown as payable has not been remitted, the case may fall within the penalty provisions for incorrect returns, and delayed filing independently attracts the penalty provision for belated returns; absent jurisdictional error, writ interference is not warranted.

Issues: Whether the value of containers or packing materials used for selling panjamirtham in packed form was liable to be included in the taxable turnover and taxed at the rate applicable to the goods contained therein, notwithstanding separate label pricing or prior tax on the containers.

Analysis: Section 3(7) of the Tamil Nadu General Sales Tax Act, 1959 provides that where goods are sold together with containers or packing materials, the turnover of the goods includes the price, cost or value of such containers or packing materials and tax is levied at the rate applicable to the goods packed therein. The sale in question was of panjamirtham in packed containers, and the separate mention of the price of the goods and packing material on the label did not alter the character of the sale. The earlier payment of tax on the containers at a prior stage did not create an exemption when the packed goods themselves were taxable. The rule governing such transactions is that packing materials form part of the turnover of the goods sold in packed form.

Conclusion: The container value was rightly included in the taxable turnover, and the assessee was not entitled to exemption.

Issues: (i) Whether milk powder fell within the exemption notification for fresh milk and recombined milk or within the reduced-rate notification for milk food including baby milk foods, so as to escape or reduce tax under entry 103(viii) of the First Schedule; and (ii) whether penalty under section 12(5)(iii) of the Tamil Nadu General Sales Tax Act, 1959 was rightly deleted.

Issue (i): Whether milk powder fell within the exemption notification for fresh milk and recombined milk or within the reduced-rate notification for milk food including baby milk foods, so as to escape or reduce tax under entry 103(viii) of the First Schedule.

Analysis: Entry 103(viii) specifically brought milk foods including milk powder within the taxable single-point entry from July 1, 1983. The exemption notification covered fresh milk, recombined milk and milk drink sold as a beverage, and on a strict construction of the notification, that expression did not extend to milk powder. The reduction notification also referred only to milk food including baby milk foods and did not specifically include milk powder. The Court treated the product as commercially distinct from milk and held that the earlier decisions relied on by the assessee did not govern the specific statutory entry and notifications in force.

Conclusion: Milk powder was not covered by the exemption or reduced-rate notifications and was liable to tax at 10 per cent under entry 103(viii); this issue was decided against the assessee.

Issue (ii): Whether penalty under section 12(5)(iii) of the Tamil Nadu General Sales Tax Act, 1959 was rightly deleted.

Analysis: The assessed turnover of milk powder was already reflected in the books, but it was not disclosed as taxable turnover even after the pre-assessment notice, and no revised return was filed before final assessment. On those facts, the basis for deleting penalty was not accepted. The Court also held that the separate notice and proceedings for penalty under section 12(5) were not vitiated by the incorrect mention of the date of the penalty order.

Conclusion: The deletion of penalty was unsustainable and the penalty as fixed by the Appellate Assistant Commissioner was restored; this issue was decided against the assessee.

Final Conclusion: The assessee obtained no relief on the tax liability issue, while the Revenue succeeded on the penalty issue, resulting in confirmation of tax on milk powder and restoration of the penalty.

Ratio Decidendi: A product specifically included in a taxing entry cannot be taken out by a general exemption notification unless the notification clearly covers it, and penalty under a turnover-disclosure provision is sustainable where taxable turnover is not disclosed despite notice and no revised return is filed before final assessment.

Issues: Whether the sales of tyres and tubes were to be treated as completed on appropriation of the goods to the contract of sale under section 2(n), Explanation (3) of the Tamil Nadu General Sales Tax Act, 1959, or only when payment was received and the goods were taken delivery of under the Sale of Goods Act, 1930.

Analysis: The scheme of section 2(n) of the Tamil Nadu General Sales Tax Act, 1959 treats a sale of specific or ascertained goods as taking place when the contract is made and, in the case of unascertained or future goods, when the goods are appropriated to the contract. The provisions of the Sale of Goods Act concerning passing of property and reservation of the right of disposal were held to be inapposite for determining the time and place of intra-State sale under the State Act. The Court held that the appropriation of the goods occurred when they were segregated and entrusted to carriers under pro forma invoices, and that subsequent retirement of bank documents and receipt of payment did not govern the date of sale.

Conclusion: The sales were completed on the dates of appropriation under the Tamil Nadu General Sales Tax Act, 1959, and the assessee's contention that sale was completed only on receipt of payment was rejected.

Issues: Whether rectification under section 55 of the Tamil Nadu General Sales Tax Act, 1959 could be invoked on the basis of a subsequent Supreme Court decision to reopen the earlier appellate order and grant exemption on second sales of voltage stabilizers.

Analysis: Rectification is confined to a mistake apparent on the face of the record, that is, an obvious and patent error which does not require fresh investigation of facts or elaborate argument. A later decision does not by itself justify rectification where the original issue turns on a debatable question of law. The Supreme Court decision in Shanmuga Traders concerned declared goods taxed at a single point, whereas the goods in question were not declared goods. The Court also noted that the earlier sale was not a taxable sale and that the dispute raised a highly disputable question of law, outside the limited scope of section 55.

Conclusion: Rectification under section 55 was not available, and the rejection of the rectification petition was . The petition was dismissed.

Issues: Whether the assessee was entitled to exemption or refund on the turnover relating to unfructified sales despite not filing the claim within the time-limit prescribed under section 4-D of the Tamil Nadu General Sales Tax Act, 1959, and whether rule 5-A(b)(i) of the Tamil Nadu General Sales Tax Rules, 1959 could override that statutory condition.

Analysis: The claim related to goods despatched but not taken delivery of, and was therefore governed by section 4-D, which specifically entitles a dealer to refund only if the claim is preferred within thirty days of receipt of the returned goods. The broader provisions relating to turnover and sales returns under section 2(r) and Explanation (2)(iii), together with rule 5-A(b)(i), could not be invoked to circumvent the special limitation imposed by section 4-D. The statutory scheme made the time-limit mandatory, and the specific provision prevailed over the general rule. The claim was also consistent with the principle that deductions or refunds for sales return or unfructified sale must be claimed in the manner and within the period prescribed by the governing statute.

Conclusion: The assessee was not entitled to the refund or exemption claim, and the disallowance was ? actually no; the claim was rightly rejected for non-compliance with section 4-D.

Ratio Decidendi: Where a taxing statute prescribes a special time-limit for claiming refund on unfructified sales, that limitation is mandatory and prevails over general turnover or rule-based provisions.

Issues: (i) Whether the assessee's exports routed through export houses qualified for exemption under section 5(3) of the Central Sales Tax Act, 1956, and whether the corresponding purchases were liable to be taxed at the last purchase point. (ii) Whether the turnover deleted on the footing of wastage or non-exported quantity was nevertheless taxable at the purchase point.

Issue (i): Whether the assessee's exports routed through export houses qualified for exemption under section 5(3) of the Central Sales Tax Act, 1956, and whether the corresponding purchases were liable to be taxed at the last purchase point.

Analysis: The agreements and surrounding documents showed that the assessee sold the goods to export houses for consideration, while the export houses completed the export to foreign buyers and dealt with the foreign exchange proceeds. The service charges and licence-related payments were treated as valuable consideration, and the contractual terms indicated that the export houses were the immediate buyers and exporters in the disputed transactions. On that footing, the assessee could not claim to be the direct exporter for the purpose of exemption under section 5(3).

Conclusion: The exemption under section 5(3) was not available to the assessee for the disputed transactions, and the purchases were liable to be brought to tax as held by the assessing authority.

Issue (ii): Whether the turnover deleted on the footing of wastage or non-exported quantity was nevertheless taxable at the purchase point.

Analysis: The Tribunal accepted that there could be natural wastage in processing prawns and that the difference between purchase weight and export weight should not automatically be treated as taxable turnover. In view of the earlier view on permissible wastage and the uncertainty arising from the passage of time, the Court accepted the Tribunal's approach on this limited aspect and declined to fasten tax on the alleged wastage at the purchase point.

Conclusion: The turnover attributable to wastage or difference in weight was not taxable at the purchase point.

Final Conclusion: The revision matters succeeded on the principal exemption issue in favour of the Revenue, while the assessee obtained relief on the limited question of wastage, resulting in a mixed disposal of the connected cases.

Ratio Decidendi: For exemption under section 5(3), the assessee must be the actual exporter in substance and not merely a seller to an export house for consideration; where the export house is the contracting buyer and exporter, the transaction is not a direct export sale by the assessee.

Issues: (i) Whether di-calcium phosphate (animal feed grade) falls within the exempt entries "balanced feed for cattle and pig" and "balanced poultry feed" in Schedule I to the West Bengal Sales Tax Act, 1994. (ii) Whether the seizure of the goods and the penalties imposed for want of valid way bills were lawful.

Issue (i): Whether di-calcium phosphate (animal feed grade) falls within the exempt entries "balanced feed for cattle and pig" and "balanced poultry feed" in Schedule I to the West Bengal Sales Tax Act, 1994.

Analysis: The expression "balanced feed" was held to denote a complete feed made up of multiple ingredients, whereas di-calcium phosphate is only a nutrient or additive used to supplement ordinary feed. The goods were therefore treated as a distinct commercial commodity and not as balanced feed itself. Earlier decisions dealing with broader expressions such as "cattle feed" or specifically inclusive exemption wording were distinguished on that basis.

Conclusion: Di-calcium phosphate (animal feed grade) does not fall within the exempt entries and is not tax-free under those schedule items.

Issue (ii): Whether the seizure of the goods and the penalties imposed for want of valid way bills were lawful.

Analysis: Since the goods were held to be taxable and distinct from the exempted items, way bills were required for their importation. The seizures were made for non-production of valid way bills, and the penalty orders were passed under the statutory provisions governing such contraventions. No separate ground was found to invalidate the seizure or the penalty proceedings.

Conclusion: The seizure and the penalties were valid.

Final Conclusion: The applications failed in full, and the impugned seizure and penalty proceedings were sustained.

Ratio Decidendi: A product that is only a feed supplement or additive, and not the balanced feed itself, is not covered by an exemption entry for balanced animal feed unless the statute clearly includes it.

Issues: Whether an appeal against assessment could be rejected for non-payment of admitted tax when the assessee's claim of exemption had already been negatived and the rejection remained operative at the time of filing and disposal of the appeal.

Analysis: The assessee had claimed exemption under section 4-AA of the West Bengal Sales Tax Act, 1954 and rule 3(66a) of the Bengal Sales Tax Rules, 1941, but that claim had already been rejected by the competent forums. At the time the appeal against assessment was filed, the adverse order of the Tribunal was in force and had not been stayed or set aside. Once the assessee had admitted the sales and the exemption claim stood rejected, tax payable on those sales became admitted tax for the purpose of the first proviso to section 12(1) of the West Bengal Sales Tax Act, 1954. Payment of such admitted tax was therefore a condition precedent for the appeal to be heard on merits. The later dismissal of the special leave petition did not alter this position, and the absence of payment justified rejection of the appeal.

Conclusion: The rejection of the appeal for non-payment of admitted tax was valid, and the order of the revisional authority also called for no interference.

Issues: (i) Whether the Tamil Nadu General Sales Tax (Fourth Amendment) Act, 1999 was valid and enforceable though it imposed additional pre-deposit requirements for appeals; (ii) Whether the amended appeal conditions could be applied to assessment proceedings where the return had been filed or had become due before the amendment came into force.

Issue (i): Whether the Tamil Nadu General Sales Tax (Fourth Amendment) Act, 1999 was valid and enforceable though it imposed additional pre-deposit requirements for appeals.

Analysis: The amendments inserted additional requirements in sections 31, 31-A and 36 of the Tamil Nadu General Sales Tax Act, 1959, including payment of twenty-five per cent of the difference between assessed tax and admitted tax as a condition for entertainment of appeals. The challenge was confined to the temporal reach of the amendment, and the Tribunal found no basis to invalidate the enactment itself. The statute was treated as a valid prospective amendment regulating the manner in which appeals could be entertained.

Conclusion: The amendment was upheld as valid.

Issue (ii): Whether the amended appeal conditions could be applied to assessment proceedings where the return had been filed or had become due before the amendment came into force.

Analysis: The Tribunal held that the right of appeal is a vested substantive right and that the critical question was when that right crystallised. After considering the line of authorities on vested appellate rights and the commencement of lis in tax matters, the Tribunal preferred a date for certainty. It held that the right of appeal vests on the date of filing of the return, or on the date the return becomes due under the Act and Rules, whichever is earlier. Where that date preceded the commencement of the amendment, the new pre-deposit conditions could not be imposed, and the earlier law alone would govern those assessments and appeals.

Conclusion: The amended conditions were held inapplicable to returns filed, or due, before the amendment came into force.

Final Conclusion: The challenge to the amendment failed on validity, but the Tribunal limited its operation by protecting vested appellate rights arising from returns filed or due before the amendment date, and the petitions were disposed of accordingly.

Ratio Decidendi: In tax proceedings, the right of appeal vests when the return is filed, or when it becomes due under the governing rules, whichever is earlier, and a later amendment imposing conditions on appeal cannot apply to proceedings in which that vested right had already accrued.

Issues: Whether an industrial unit that had already become eligible for tax remission under section 10G and rule 48G could claim the benefit of the amended provision extending the remission period and enhancing the extent of remission; and whether a unit established and commissioned before the amended cutoff date fell within the amended rule.

Analysis: The entitlement to tax remission under section 10G of the Bengal Finance (Sales Tax) Act, 1941 read with rule 48G of the Bengal Sales Tax Rules, 1941 was held to be a substantive benefit fixed with reference to the law in force when the unit first became liable to tax and when its eligibility commenced. An amendment enlarging the remission period does not automatically alter that accrued position unless the amended provision itself so provides. The amended rule also introduced a new class condition by limiting its application to industrial units established and commissioned for the first time on or after 1 June 1993. A unit that had been set up and had already incurred tax liability before that date did not satisfy the amended eligibility condition.

Conclusion: The amended rule did not apply to the applicant-company, and its claim for extension of the eligibility period failed.

Final Conclusion: The decision confirms that a tax remission entitlement is governed by the statutory regime existing when the right crystallises, and a later amendment extending the benefit cannot be invoked by a unit outside the amended class.

Ratio Decidendi: A substantive tax incentive or remission right, once crystallised under the governing law, is not enlarged by a subsequent amendment unless the amending provision clearly makes it applicable to the earlier-acquired entitlement, especially where the amendment also narrows the class of eligible units.

Issues: Whether eucalyptus timber purchased on payment of tax, when cut, debarked and converted into logs or pulpwood for supply to a rayon manufacturer, ceased to remain timber so as to attract multi-point taxation and penalty, or whether it continued to be timber entitled to second-sale treatment under the tax entry applicable to timber.

Analysis: The relevant enquiry was whether the processing of the trees into logs or pulpwood altered the essential commercial identity of the goods. The reasoning accepted that mere cutting, debarking, splitting, or sizing of timber does not necessarily create a new commercial commodity. The intended use of the goods by a particular purchaser is not decisive of classification, because the nature of the goods must be determined by their commercial identity and not merely by the use to which a special buyer may put them. The earlier authorities relied on by the Revenue were distinguished on the footing that eucalyptus logs sold as raw material for the rayon industry had been treated in prior decisions as timber falling under the relevant entry, and the processed form did not lose its identity as timber. On that basis, the turnover could not be assessed again as a different multi-point commodity, and the penalty could not stand.

Conclusion: The processed eucalyptus logs remained timber, the sale qualified for second-sale treatment, and the levy of multi-point tax and penalty was unsustainable.

Final Conclusion: The revision by the Revenue failed, and the Tribunal's view that the assessee was not liable to be taxed again on the disputed turnover was upheld.

Ratio Decidendi: Mere processing of timber by cutting, debarking, or sizing does not by itself change its essential commercial identity, and classification for sales tax must turn on the goods' market identity rather than the special use intended by the buyer.

Issues: Whether the value of materials used in retreading and recapping of tyres, where the work was performed in Tamil Nadu and the retreaded tyres were later sent to customers outside the State, was exigible to tax under section 3B of the Tamil Nadu General Sales Tax Act, 1959 or whether the transaction was an inter-State works contract outside the State's taxing power.

Analysis: The taxable event under article 366(29A)(b) is the transfer of property in goods involved in the execution of a works contract, and for that purpose the relevant point is incorporation of the goods in the works. Section 3B of the Tamil Nadu General Sales Tax Act, 1959 was treated as a valid charging provision for works contracts while expressly excluding only transfers falling in export, import, or inter-State trade or commerce. On the facts, the order form and billing documents showed that the retreading job was executed in Tamil Nadu; the materials were consumed there in completing the job, and only the finished retreaded tyres were dispatched to Kerala. The movement of the finished tyres did not occasion the movement of the inputs used in the retreading work. The Tribunal distinguished authorities dealing with contracts where movement of goods from one State to another was an incident of the contract, and held that such reasoning did not apply where the goods had already been incorporated in the works within the State.

Conclusion: The turnover representing the materials used in retreading and recapping was rightly held taxable under section 3B, and the claim that the transaction was an inter-State works contract was rejected. The revision failed.

Ratio Decidendi: In a works contract, the transfer of property in goods is taxable where the goods are incorporated in the execution of the work, and the later movement of the completed article out of the State does not by itself convert the taxed input transaction into an inter-State sale or works contract.

Issues: Whether the petitioner was entitled to sales tax deferral without first satisfying both the base production volume and base sale volume, whether the tax up to the base level could be paid in monthly instalments, and whether the demand for a revised agreement was legally unsustainable.

Analysis: The eligibility certificate and the agreement were read with G.O. Ms. No. 119 dated 13.04.1994, which made deferral available only when actual production exceeded the base production volume and sales exceeded the base sales volume. The right to defer tax arose only when the later of the two benchmark conditions was reached. The scheme required payment of tax until the prescribed base levels were crossed, and no material basis existed for claiming payment of the benchmark tax in 12 instalments. The request for a revised agreement was only to reflect the legal position already flowing from the Government Order and the existing documents. The earlier decision relied upon by the petitioner did not assist because the factual setting and the relief sought were different.

Conclusion: The petitioner was not entitled to deferral before satisfying both benchmark conditions, was not entitled to pay the base tax in instalments, and the demand for a revised agreement was not illegal.

Final Conclusion: The petitions failed on the proper construction of the incentive scheme, the eligibility certificate, and the agreement, and the tax liability had to be discharged in accordance with the governing sales tax law until the deferment conditions were fulfilled.

Ratio Decidendi: Where an incentive scheme for expansion links sales tax deferral to both base production and base sales thresholds, the deferral accrues only after the later threshold is crossed, and the assessee cannot claim instalment payment or a contrary contractual rewrite inconsistent with the scheme.