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1999 DIGILAW 343 (GAU)

Manjushree Extrusions Limited v. State of Assam

1999-10-13

D.BISWAS, M.SHARMA

body1999
Smti M. Sharma, J. - All these above mentioned appeals have been preferred against a common judgment and order dated 29.4.98 (1998 (2) GLJ 24) passed by the learned Single Judge dismissing the writ petitions by upholding the validity of the impugned provisions of the Assam Industries (Sales Tax Concession) Scheme, 1995. 2. Facts leading to filing of the writ petitions and the appeals, in a narrow campus, may be stated as follows. With a view to boost the industrial development in the State of Assam the State Govt introduced a number of Schemes offering incentives and subsidies for certain period, extending the policy from time to time. These limited benefits relating to industrial policy of the State have been offered to commercial production of the industrial units falling under a particular scheme during their initial stage as an incentive. First such incentive scheme was started a vide notification dated 8th November, 1969. With the change of time, necessity for revision in this incentive scheme was felt, hence, the Govt by notification dated 12.10.82 announced a new package of incentive known as 1982 Scheme, which envisaged and provided for grant of sales tax exemption to the new industrial units on the purchase of raw materials and sale of finished products for a period of five years from the date of commencement of the commercial production. b But, this exemption of sales tax was subject to the production of the Eligibility Certificate from the Udyog Vikash, which is the main implementing agency. 3. Again in the year 1986 the State Govt announced a new package of incentives (1986 Industrial Policy) vide notification No.GI 386/86 dated 25.12.86 fixing the period from 1.1.87 to 31.3.90 which was subsequently extended to 31.3.91. In this 1986 Scheme also State Govt granted sale tax exemption to the new industries as well as to the industries undertaking expansion, modernisation and diversification for a period of 5 years from the date of commercial production. Accordingly the State Legislature enacted Assam Industries (Sales Tax Concession) Act, 1986. This enactment was made with a view to consolidate and amend the provisions of the law relating to sales tax in the matter of concession to the industries which come within this scheme and further Rules were made and notifications were issued in order to give effect to the provisions of the Act. 4. This enactment was made with a view to consolidate and amend the provisions of the law relating to sales tax in the matter of concession to the industries which come within this scheme and further Rules were made and notifications were issued in order to give effect to the provisions of the Act. 4. In 1991, again a new industrial policy was announced vide notification No.Cl/154/90/279 dated 6.4.91 and No.Cl/154/90/242 dated 1.7.92 (1991 Industrial Policy) granting similar exemption of sales tax to new industrial units set up on or after 1.4.91 and also the existing industrial units undertaking expansion, modernisation and diversification, for a period of seven years. 5. The appellants which were existing industries as on 1.4.91 undertook expansion, modernisation and diversification work on the basis of the 1991 Industrial Policy. After having undertaken expansion, modernisation and diversifications work in the existing industrial units the appellants applied for issuance of the Eligibility Certificate before the appropriate authority and the implementing agency after being satisfied, issued the Eligibility Certificate to appellants granting amongst others, exemption from payment of sales tax for a period of seven years. Accordingly, the appellant companies sold its product without charging any sales tax-and purchased raw materials to be used in the manufacture of finished products without payment of tax. The appellants submitted their return of turnover before the Superintendent of Taxes, who is the assessing authority, showing taxable turn over to be 'Nil' and claiming exemption under the relevant Scheme. 6. In the meantime, in the year 1993 the new Sales Tax Act, came into force, viz, Assam General Sales Tax Act, 1993. Section 9 (4) of this Act confers power on the State Govt to frame one or more Schemes by way of notification in the Official Gazette for the purpose of granting reliefs of full or partial exemption of tax to any class or industry within the State from payment of any tax payable under the said Act on the new materials or other inputs purchased within the State of Assam and on the manufactured goods sold within the State or in course of inter State trade and commerce for such period as may be prescribed and from such date as may be specified in the notification. The aforesaid Act came into force with effect from 1.7.93. 7. The aforesaid Act came into force with effect from 1.7.93. 7. The State Govt in exercise of the power concerned under section 9 (4) and clause (f) of sub-section (3) of section 74 of the Act by way of notification framed a scheme known as 'Assam Industries (Sales Tax Concession) Scheme, 1995 dated 16.8.95 granting relief by way of full exemption of sales tax on the purchase of raw materials within the State by the eligible industrial units situated within the State and also on the sale of finished products manufactured in such eligible units in the State or in course of inter State trade and commerce. The said scheme was brought into force with effect from 1.4.91. As per clause (b) of section 2 of the said scheme an industrial unit having its registered office within the State which is or was in production prior to 1.4.91 undertaking expansion, modernisation and diversification to the minimum extent of 25% of the fixed capital investment at the same location or at any other place of the State and resulting an increase in capacity by a minimum of 25% and generating additional employment of atleast 10% shall be treated as an eligible industry for the purpose of the scheme. In the said scheme, it has provided for that the benefit of sales tax exemption in respect of the industries undertaking expansion, modernisation and diversification shall be limited to the increase in production due to expansion, modernisation and diversification. The said scheme provided for determination of increase in production of an industrial unit which has undertaken expansion, modernisation and diversification which shall be equal to the annual production after completion of expansion, modernisation and diversification minus production during the base year which has been said to be the actual production of an industrial unit during 365 consecutive working days of the unit preceding the expansion, modernisation and diversification to be expressed in percentage. As such, an industrial unit undertaking expansion, modernisation and diversification was given the benefit of sales tax exemption only in the increase in production after expansion, modernisation and diversification since increase was to be computed in accordance with the principle laid down in this scheme. 8. As such, an industrial unit undertaking expansion, modernisation and diversification was given the benefit of sales tax exemption only in the increase in production after expansion, modernisation and diversification since increase was to be computed in accordance with the principle laid down in this scheme. 8. Similarly, exemption was also granted on the inter State sale of the goods, manufactured in a new industrial unit as well as industrial unit undertaking expansion, modernisation and diversification by issuance of notification under section 8 (5) of the Central Sales Tax Act, 1956. 9. From the nature of 1995 Scheme, it is thus clear that it curtailed the benefit of sales tax exemption as promised in the 1991 Industrial Policy, inasmuch as, the 1991 Industrial Policy promised for a grant of full sales tax exemption for a period of seven years to both new industries as well as industries undertaking expansion, modernisation and diversification. The appellants filed writ applications before this Court challenging the validity of the impugned provisions of the 1995 Scheme curtailing the exemption as well as challenging the provisions of scheme relating to determination of increase in production to be arbitrary and illegal. The aforesaid writ applications have been dismissed by the learned Single Judge on the ground that there was no substantial difference in the 1991 Industrial Policy and 1995 Concession Scheme and that the 1995 Policy provided for full sales tax incentives only to the new industrial units. Being aggrieved by the judgment and order of the learned Single Judge, the present writ appeals were filed before this Court. 10. We heard the learned counsel for the parties. The grievance of the appellants is that while the appellants have been enjoying the benefits from the respective schemes and were granted Eligible Certificates till 2001 under the 1991 Scheme, are facing predicament as the Sate Govt has framed a scheme by notification dated 16.8.95, namely, Assam Industries (Sales Tax Concession) Scheme, 1995 in exercise of power under section 9 (4) of the Assam General Sales Tax Act, 1994 read with clause (f) of sub-section (3) of section 74, granting relief by way of full exemption of sales tax on the purchase of raw materials within the State by eligible industrial units. This scheme came into force with effect from 1.4.91. This scheme came into force with effect from 1.4.91. Further contention of the appellants is that industrial units of the appellants were in production prior to 1.4.91 and they undertook expansion, modernisation, diversification and, as such, the sale is covered by the 1991 Scheme and entitled to the benefits of the scheme. It is alleged that the procedure or manner of determination for eligibility for sales tax exemption under the 1995 Scheme making the same applicable in the case of the appellants causes deprivation of the benefits to which they were entitled under the earlier schemes; that the incentives granted under the Industrial Policies cannot be curtailed by framing scheme to give effect to the policy announcements and promises as is done in 1995 Scheme. The main contention is that the State Govt's action in providing for in the 1995 Scheme, that the industries undertaking expansion, modernisation and diversification will be entitled to sales tax exemption only on that part of the production which is determined to have been increased due to such expansion etc is arbitrary and prejudiced the right and entitlement of the appellants. Appellants in their writ petitions have invoked writ jurisdiction of the Court to declare the 1995 Scheme as arbitrary and not tenable in law as it was enacted without jurisdiction. 11. Dr. Saraf, learned counsel for the appellants has submitted that the respondents did not dispute, in their affidavit, the validity of the claims of the appellants that the incentive as existing units, were granted under industrial policy cannot be curtailed by framing a scheme to give effect to the policy announcements and promises as has been done in the 1995 Scheme. It has also been argued by the learned counsel for the appellants that the Industrial Policy of 1991 contained a promise of full sales tax exemption for a period of seven years to new industries as well as industries undertaking expansion, modernisation and diversification, therefore, it cannot be said that Sales Tax Concession Scheme 1995 did not make any material departure from 1991 Industrial Policy. 12. To decide the claims of the appellants regarding the incentive and the effect thereof offered by the 1991 Scheme, Court is required to raise the avail of the said incentive scheme. 12. To decide the claims of the appellants regarding the incentive and the effect thereof offered by the 1991 Scheme, Court is required to raise the avail of the said incentive scheme. Before proceeding further it is necessary to look into the some of the clauses of the Scheme 1991, particularly, clause 5 of the Part n of the Scheme. 13. Clause 2 of Part II of the 1991 Industrial Policy defines eligible unit as follows: “2. Eligible Unit: Only new units set up on or after 1.4.91 and existing units, undertaking expansion, modernisation or diversification at the same location or at any other place in the State of Assam will be eligible for incentive under 1991 Scheme provided that. 2.1. A unit shall have employment of 80% people of Assam in the managerial cadre and 90% people of Assam to the non-managerial cadre and that over a period of 5 years from the commencement of production such units would take all effective steps to ensure 100% employment of people of Assam in non managerial and atleast 90% in managerial posts. They would further give an undertaking that if these considerations are violated, the State Govt Subsidies/Incentives so availed by them would be fully refunded. 2.2. In exceptional cases where the industrial unit can prove to the satisfaction of the State Level Committee that persons with required skill and expertise are not locally available, relaxation of the above clause will be allowed by the State Level Committee for a period to be determined by the State Level Committee as deemed fit. 2.3. The location of the registered office shall be within the State of Assam New unit is defined by clause 3 of Part II as follows: “3. New Unit : An industrial unit which has taken all the initial effective steps on or after 1.4.91 would be considered as a new unit.” Existing unit has also been defined by clause 4 as under: “4. Existing Unit: A unit which is or was in commercial production at any time prior to 1.4.91 will be considered as an existing unit for the purpose of the 1991 Scheme.” Similarly, expansion, modernisation and diversification have been defined by clause 5 as under : “5. Existing Unit: A unit which is or was in commercial production at any time prior to 1.4.91 will be considered as an existing unit for the purpose of the 1991 Scheme.” Similarly, expansion, modernisation and diversification have been defined by clause 5 as under : “5. Expansion/modernisation/diversification: Expansion/modernisation/ diversification of an existing industrial unit will also be eligible for all incentives if the total capital investment on plant and machinery in the expansion / modernization / diversification as the case may be, is more than 25 percent of the total fixed capital investment of the existing unit. For the purpose of calculation, gross value of all the capital investments made on land, building, plant and machinery of an existing unit will be taken into consideration. Expansion, modernisation, diversification will imply an increase of atleast 25% in the existing installed capacity as well as increase of additional employment atleast by 10%. The fact that existing unit has availed itself of incentives will not disqualify the expansion/modernisation/diversification project to get incentives for the extra investment made.” 14. Clause 8 of Part II of the Scheme 1991 runs thus : “8. No right or claim for any incentive under the scheme shall be deemed to have been conferred by the scheme merely by virtue of the fact that the unit has fulfilled on its part the conditions of the scheme. The incentives under the scheme cannot be claimed unless the Eligibility Certificate has been issued under the scheme by the implementing agency concerned and the unit has complied with the stipulations/conditions of eligibility.” Apparently, this clause 8 makes it clear that the benefit under the scheme cannot be claimed until and unless the Eligibility Certificate has been issued by Implementing Agency. The Eligibility Certificate is to be issued by the Udyog Sahayak of the Directorate of Industries, District Industries Centre for the SSI sector and Assam Industries Development Corporation Limited for the medium and large sector and the same is to be issued after ensuring that all the norms for the Eligibility Certificate have been fulfilled. 15. Part III of the Industrial Policy of 1991 deals with various incentive announced and clause 6 of the said Part III deals with the sales tax exemption. Clause 6 reads as under : “6. 15. Part III of the Industrial Policy of 1991 deals with various incentive announced and clause 6 of the said Part III deals with the sales tax exemption. Clause 6 reads as under : “6. Sales Tax Exemption : Sales tax will be exempted on purchase of raw materials and sales of finished products for a period of seven years”. 16. So, the moot question is whether the appellants have fulfilled the criteria and if so, whether they can claim the benefit promised as per the 1991 Industrial Policy for seven years. The contentions of the appellants were that they were existing industries as on 1.4.91, undertook expansion, modernisation and diversification work on the basis of the 1991 Industrial Policy announcements and the promises made in the said Industrial Policy and the Incentive Scheme of 1991. After having fulfilled all the requisite criteria for grant of the benefits of various incentive scheme and having undertaken expansion, modernisation and diversification work in the existing industrial unit, the appellants applied for issuance of the Eligibility Certificate before the appropriate authority and the Implementing Agency after being satisfied that all the norms for issuance of the Eligibility Certificate have been fulfilled, issued the Eligibility Certificate to the appellants granting amongst others, exemption from payment of sales tax for a period of seven years. 17. After the announcement of the 1991 Industrial Policy, the Department of Industries gave wide publicity of the policy by issuing booklets explaining the salient features of this policy. Apparently, under this policy existing units undertaking expansion, modernisation and diversification are offered incentives at the same rate (Annexure VIII to the CR No.-3673 of 1996). The State Legislature enacted the Assam General Sales Tax Act, 1993 (for short 'the Act,1993') amalgamating all the four Sales Tax Acts and amended the sections to levy of tax on the sale and purchase of goods in the State of Assam, thereby repealed all the existing Sales Tax Acts with effect from 1.7.93. 18. A cursory discussion of the Act, 1993 is required to be made in the light of the appellants' case. 18. A cursory discussion of the Act, 1993 is required to be made in the light of the appellants' case. Section 9 (4) of the Act, 1993 confers power on the State Govt to frame one or more schemes by way of notification in the Official Gazette for the purpose of granting relief by way of full or partial exemption of any tax payable under this Act to any class of industries within or any specified part of the State, on raw materials and other inputs purchased within the State or on the manufactured goods sold by them within the State in course of inter State Trade and Commerce for such period or periods as may be specified. This Act, 1993, as stated above came into force from 1.7.93 whereas the 1991 Industrial Policy came into force from 1.4.91 promising, as submitted, full sales tax exemption to the new industries as well as to existing industries undertaking expansion, modernisation and diversification on or after 1.4.91. 19. As it is seen section 74 of the Act, 1993 was amended in 1994 by inserting clause (f) to sub-section (3) of section 74, so that provision of the Act can also be made applicable in respect of exemption of tax, granted before the appointed day. After this amendment, the State Govt was empowered to issue exemption notification under the Act, 1993 with effect from a date prior to the appointed date. Apparently, this amendment was done keeping in view the exemptions announced and granted under the 1991 Industrial Policy and Incentive Scheme with effect from 1.4.91. 20. In exercise of the power under section 9 (4) of the Act, 1993 read with clause (f) of sub section (3) of section 74 of the Act, 1993, the Govt of Assam, by a notification framed a scheme, viz, Assam Industries (Sales Tax Concessions) Scheme, 1995 dated 16.8.95 granting relief by way of full sales tax exemption on the purchase of raw materials within the State of Assam by the eligible industrial unit and also on the sale of finished products manufactured in such eligible units in the State or in course of inter State trade and commerce. This scheme came into force with retrospective effect from 1.4.91. 21. This scheme came into force with retrospective effect from 1.4.91. 21. As the appellants have challenged some of the clauses of the Scheme, 1995 alleging discriminatory treatment meted out to them and deprivation of the benefits under the 1991 Scheme, it require some discussion in the light of the promised incentives/benefits given to them under the 1991 Scheme. 22. Clause B, paragraph 2 of Part I of the aforesaid scheme provides that an industrial unit having registered within the State of Assam which is or was in production prior to 1.4.91, undertaking expansion, modernisation and diversification to the minimum extent of 25% at the same location or at some other places and with an additional employment of atleast 10% and which is in compliance of the criteria of employing the people of Assam, shall also be treated as an eligible industrial unit for the purpose of the aforesaid scheme. The aforesaid scheme also provided for a detailed procedure for applying for the grant of eligibility and the authorisation certificate. 23. The Preamble of the 1995 Scheme states that the scheme is framed for the grant of relief by way of full exemption of sales tax on purchase of raw materials, within the State of Assam by the eligible industrial units in the State of Assam or in course of inter State trade and commerce. However, clause 7 of Part I of the Scheme 1995 provides for determination of me increase in production of an industrial unit which had undertaken expansion, modernisation and diversification. . 24. Clause 10 of Part I of the Scheme 1995 further provides for the procedures for the extension of the benefit under the Scheme 1995 to an eligible industrial unit of category B, namely, an industrial unit which had undertaken expansion, modernisation and diversification and obtains the certificate of authorisation on or after the date of the issuance of the notification dated 16.8.95 with effect from the date of issuance of the said notification. 25. Paragraph 11 of the Part I of the Scheme provides for procedure for the grant of extension of benefits under the scheme to an industrial unit undertaking expansion, modernisation etc (Category B) which obtains the certificate of authorisation on or after the date of issuance of notification, but whose certificate of authorisation is in force prior to the date of issue of the notification dated 16.8.95, but on or after 1.4.91. 26. Dr. Saraf, learned counsel for the appellants has submitted that the clause 11 of Part I of the Scheme 1995 provided that the benefit of sales tax exemption would be granted to the extent of requirement of permitted raw materials in reference to the difference between the actual annual production after the completion of expansion, modernisation, diversification work and the production c during the base year. That, such benefit of taxes on the purchase of the raw materials has to be granted by way of refund in the manner laid down in clause 11. That, so far the finished products are concerned, the benefit has been limited to the increase in production which is corresponding to the difference between the actual annual production after completion of the expansion, modernisation and diversification and the annual production during the base year. It has further been submitted that para 7 of Part I has provided for the determination of the increase in production of the industrial unit which undertakes expansion, modernisation and diversification which shall be equal to the annual production after completion of the modernisation etc minus the production during the base year which has been subject to the actual production of industrial unit during the 365 consecutive working days of the unit preceding the date of expansion etc to be expressed in percentage. In view of this, it has been submitted, as per the Scheme 1995, the industrial unit undertaking expansion etc on the basis of the 1991 Industrial Policy will be entitled to the benefits of sales tax exemption, only on the increased production. 27. Dr. Saraf has submitted that similar exemption was granted on the inter State sale of goods manufactured in a new industrial unit as well as industrial unit undertaking expansion, modernisation etc by issuance of notification under section 8 (5) of the Central Sales Tax Act, 1956. In the Scheme 1995 in clause 5 of Part II also provision has been made for exemption from payment of sales tax in respect of the sales made in course of inter State trade and commerce by an industry undertaking expansion, modernisation and diversification. But the said exemption has been made limited to the increase in production after expansion, modernisation and diversification. 28. But the said exemption has been made limited to the increase in production after expansion, modernisation and diversification. 28. From the above the sum and substance of the arguments of the appellants is that the Scheme 1995 curtailed the exemption of the incentives offered by the 1991 Scheme as provisions of the Scheme 1995 relating to determination of increase in production is arbitrary and illegal. 29. In view of the provisions made in the Scheme 1995, it is to be considered whether this scheme curtailed the benefit of sales tax exemption as promised in the 1991 Industrial Policy as this polif jr. promised for a grant of full sales lax exemption for a period of seven yeart td tfofh new industries as well as industries undertaking expansion, modernisation and diversification. 30. The respondent State Government the writ petition by filing affidavit in-oppositions. Mr. PG Baruah, teamed Advocate General, Assam reiterated the stand of the Govt and stated that flo promise Was made by the Govt and, therefore, there cannot be a case of promissory estoppel; that the Govt policy can be changed for public interest for attainment of certain objectives and that the respondent Govt never gave any undertaking to the appellants for not raising the sales tax from them and that the appellants would be entitled to sales tax exemption only for the expanded portion of the unit and not for the original unit which already enjoyed the benefits of sales tax exemptions for five years; that the exemption of sales tax under the earlier industrial policy were already enjoyed and, therefore, no extra advantage by taking resort to the expansion, modernisation and diversification with plea of extra investment for their original units for a further period along with the expanded portion and that such exemptiori lias not been provided under the 1986 Act. The learned Advocate' General further submitted that 1991 Policy did not contain any promise and that the Scheme 1995 being a statutory scheme framed under the 1993 Act and, therefore, there cannot be any estoppel against the statutory provisions. 31. Before proceeding further with the issue relating to applicability of the promissory estoppel in the case of the applicants' claim clause 5 of Part I of the 1991 Scheme needs some examination in the light of the claim of the appellants. 32. 31. Before proceeding further with the issue relating to applicability of the promissory estoppel in the case of the applicants' claim clause 5 of Part I of the 1991 Scheme needs some examination in the light of the claim of the appellants. 32. In the preceding paragraphs we have discussed the provisions of clause 5 of Part I of the 1991 Scheme along with other clauses. However, considering the importance of the issue in question, we find it necessary to look into those clauses along with clause 5 of Part 1. 33. Clause 3 of the 1991 Scheme deals with new unit which states that an industrial unit which has taken all the initial effective steps on or after 1.4.91 would be considered a new unit. Existing unit means a unit which is or was in commercial production at any time prior to 1.4.91 which will be considered as an existing unit for the purpose of the 1991 Scheme, (underline supplied). Clause 5 deals with expansion! modernisation, diversification. This clause state that expansion, modernisation, diversification of an existing industrial unit will also be eligible for all incentives if the total capital investment on plant and machinery in the expansion, modernisation diversification as the case may be, is more than 25 % of the total fixed capital investment of the existing unit. For the purpose of calculation, gross value of all the capital investments made on land, building, plant and machinery of an existing unit will be taken into consideration. Expansion, modernisation, diversification will imply an increase of atleast 25% in tije existing installed capacity as well as increase of additional employment atleast by 10%. The fact that existing units which has availed itself of incentives will not disqualify the expansion/modernisation/diversification project to get incentives for the extra investments made (underline supplied). 34. The learned Single Judge in the impugned judgment held that in the 1991 policy Govt gave full sales tax exemption only to the new units for seven years and that the Scheme 1995 was not meant for the existing industrial unit in the entirety, but it conferred the benefit only to the expanded portion only. 34. The learned Single Judge in the impugned judgment held that in the 1991 policy Govt gave full sales tax exemption only to the new units for seven years and that the Scheme 1995 was not meant for the existing industrial unit in the entirety, but it conferred the benefit only to the expanded portion only. Further, the learned Single Judge rejected the plea of promissory estoppel holding that 1991 Scheme has not spelt out any promise to the appellants, that the Scheme 1995 not made material departure from the 1991 Industrial Policy and in that view of the matter the Scheme 1995 cannot be held to be retrospective in effect. 35. But, as discussed above, as per clause 5 of the Part I of 1991 Scheme, the industrial policy, as amended, extend to new industries as well as the industries undertaking expansion, modernisation and diversification, will be entitled to exemption from sales tax both in the finished products as well as on purchase of raw materials for seven years. As it is seen, the benefit of the scheme has been extended to expansion, modernisation and diversification of an 'existing unit subject to some conditions, given in the clause 5 itself such as if the total capital investment on plant and machinery in the expansion, modernisation or diversification, as the case may be, is more than 25% of the total fixed capital investment of the existing unit. Further, this clause 5 also gives a guideline for the manner to calculate the gross value of all the capital investment on such modernisation etc as indicated in this clause which relates to 'existing units' and take those into consideration for the purpose of calculation to give tax exemption etc. The intention of the policy maker is clear and categorical that expansion, modernisation and diversification will imply an increase of atleast 25% in the existing installed capacity as well as increase of additional employment atleast by 10%. The intention of the policy maker is clear and categorical that expansion, modernisation and diversification will imply an increase of atleast 25% in the existing installed capacity as well as increase of additional employment atleast by 10%. The intention of the industrial policy maker of 1991 Policy categorically clarified the intention in clear terms that "the fact of existing units has availed itself of incentives will not disqualify the expansion, modernisation and diversification project to get the incentives for extra investment made." Meaning from this clause can be interpreted that subject to those conditions inserted therein, the existing units can derive the benefit of the Scheme 1991 and if the existing industries fulfil those criteria, they will be qualified to the benefit of exemption of tax etc till seven years as intended by the 1991 scheme. In view of this aspect, those existing industries which do not fulfil these criteria are not entitled to the exemptions of sales tax etc. Hence, we are constrained to hold that the existing industrial units which made expansion, modernisation and diversification is required to fulfil the criteria for exemption for sales tax etc under the scheme. This aspect of the entitlement for exemption of sales tax is further clarified by clause 8 of Part I of the 1991 Scheme which states that "unless the Eligibility Certificate has been issued under the scheme by the Implementing Agency concerned and the unit has complied with the stipulation/condition of eligibility". Apparently, issuance/receipt of Eligibility Certificate is the precondition for such benefits as Eligibility Certificate is required to be issued by the concerned authority after its satisfaction that the conditions are fulfilled. Clause 9 of the Part I of the 1991 Scheme has inserted that the Eligibility Certificate will be issued after ensuring that all the norms for eligibility have been fulfilled. Clause 9.2 also provides for issue of Provisional Eligibility Certificate, based on which disbursement of contribution of feasibility study cost as development subsidy can be made. 36. Learned counsel for the appellants submitted that all the appellants obtained Eligibility Certificates on the basis of which they are entitled to exemption of sales tax on the sale of the finished products as well as on the purchase of raw materials. 36. Learned counsel for the appellants submitted that all the appellants obtained Eligibility Certificates on the basis of which they are entitled to exemption of sales tax on the sale of the finished products as well as on the purchase of raw materials. The appellant industries having undertaken the necessary steps for expansion, modernisation and diversification on the basis of the promise made in the 1991 Industrial Policy and policy statements and having been issued with the Eligibility Certificate by the Implementing Agency, making it clear that the appellant industries will be entitled to sales tax exemption for a period of seven years, the Scheme 1995 framed to give effect to the 1991 Industrial Policy, cannot curtail the benefits of sales tax exemption to only increase in production due to expansion, modernisation and diversification. 37. As stated above, the amalgamated amended Act ,Assam General Sales Tax Act, 1993, has been enacted with effect from 1.7.93 to give effect to the policy of 1991. Further, the provisions of section 9 (4) of the Act 1993 conferred powers-to the State Govt to frame scheme by way of notification in the Official Gazette for granting relief to any class of industries within the State. The 1991 Policy which was given effect to from 1.4.91 promised till exemption to sales tax including all industries stated in clause 5 therein. The main contention of the counsel for the appellants is that Scheme 1995 was framed to give effect to the promises and policy statements of 1991 Industrial Policy, therefore, the Scheme 1995 can not be contrary to the policy statements made in 1991 by the State Govt. From the perusal of the Scheme 1995 it is seen that Scheme 1995 also granted similar relief by way of sales tax exemption to the industrial units. However, this scheme was given retrospective effect from 1.4.91 with restriction under clause 7 of Part I. It is also seen that the Implementing Agency on being satisfied issued Eligibility Certificates to appellants on various dates, certifying that the appellants are entitled for sales tax exemption for seven years. 38. In view of the above position, it is to be seen whether provisions of the Scheme 1995 can give retrospective effect to deprive the appellants from the sales tax exemption which was promised by the 1991 Industrial Policy. 39. 38. In view of the above position, it is to be seen whether provisions of the Scheme 1995 can give retrospective effect to deprive the appellants from the sales tax exemption which was promised by the 1991 Industrial Policy. 39. The Industrial Policy initiated in 1982, as it is seen, was formulated as a continuous process and changes were made to make the industrial policy more pragmatic so that benefit of substantive nature will be granted. The appellants-industries have been enjoying the incentives offered by the Govt, and undertook expansion, modernisation and diversification and invested huge amount for this & purpose. From tne 1991 Industrial Policy it is clear that the existing units undertaking expansion, modernisation and diversification will also be entitled to full sales tax exemption for a period of seven years. 40. Dr. Saraf, counsel for the appellants has further submitted that from the promises made by the respondent/Govt in the 1991 Industrial Policy created reasonable and legitimate expectations that the appellants are entitled to the industrial incentives for seven years and no change of this incentive policy is discernible in subsequent action/decisions of the respondent/Govt. 41. In support of his contention, he has placed reliance on a decision of the Apex Court in the State of Bihar vs. Suprabhat Steel Ltd, (1999) 1 SCC 31 . The Apex Court was dealing with the matter arising out of the Bihar Industrial Incentive Policy, 1993 in this case. The notification issued under section 7 of the Bihar Finance Act by the State Govt was contrary to the Industrial Incentive Policy announced by the State Govt. In this case, the Supreme Court upheld the judgment of the High Court in striking down the part of the exemption notification under section 7 as the same was repugnant to the Industrial Incentive Policy. According to learned counsel for the appellants this decision is squarely application to the facts of the present cases, since the Scheme 1995 framed by way of notification under section 9 (4) of the Act of 1993 to give effect to the Industrial Policy resolution and the Incentive Scheme of 1991. 42. According to learned counsel for the appellants this decision is squarely application to the facts of the present cases, since the Scheme 1995 framed by way of notification under section 9 (4) of the Act of 1993 to give effect to the Industrial Policy resolution and the Incentive Scheme of 1991. 42. The Supreme Court in Bakul Oil Industries vs. State of Gujarat, (1987) 1 SCC 31 held thus : “We must, however, observe that the power of revocation of withdrawal would be subject to one limitation, viz the power cannot be exercised in violation of the rule of promissory estoppel. In other words, the Govt can withdraw an exemption granted by it earlier if such withdrawal could be done without offending the rule of promissory estoppel and depriving an industry entitled to claim exemption from payment of tax under the said rule. If the Govt grants exemption to a new industry d and if on the basis of the representation made by the Govt an industry is established in order to avail the benefit of exemption, it may then follow that the new industry can legitimately raise a grievance that the exemption could not be withdrawn except by means of legislation having regard to the fact that promissory estoppel can not be claimed against a statute”. The aforesaid law was again reiterated by the Supreme Court in Pine Chemicals Ltd vs. Assessing Officer, (1992) 2 SCC 683 . 43. The learned counsel for the respondents in their argument did not dispute the validity of the contentions of the appellants that the incentives granted under the Industrial Policy cannot be curtailed/denied by framing a scheme, in the instant case the Scheme 1995. The ratio enunciated in the judicial pronouncement mentioned above is that principle of promissory estoppel and legitimate expectation require regularity, predictability and certainty in the Govt's dealing with the public. These principles may not be source of Constitutional Code, but are the consequences of rights of individual/public on substantive effect of Govt action as defined and enforced by the Courts. As submitted by Dr. Saraf, promissory estoppel has arisen with legitimate expectation on the decision of the respondent State Govt from the incentives already given by the 1991 Industrial Policy and that by the subsequent Scheme 1995 the same benefit be given to them. As submitted by Dr. Saraf, promissory estoppel has arisen with legitimate expectation on the decision of the respondent State Govt from the incentives already given by the 1991 Industrial Policy and that by the subsequent Scheme 1995 the same benefit be given to them. It is an admitted fact that the industrial units of the appellants were in production prior to 1.4.91 and they undertook expansion, modernisation and diversification of their existing industries and have received the benefits with promise till end of seven years. Hence, in our view, when the appellants are in receipt of the benefits as per the Scheme 1991 it cannot be curtailed by another Scheme. 44. For the foregoing reasons, we hold that the Scheme 1995 is the continuation of the 1991 Industrial Policy, hence appellants are entitled to the a benefits of Scheme 1995. The Govt can give exemption from payment of tax under the scheme. It is for the policy makers, i.e. the Govt to decide whether as per the Scheme 1995, sales tax concession can be given to these appellants in the light of the benefits given under the Scheme; 1991, which have been enjoying by them for seven years. This Court can issue a writ of Mandamus to the Govt for implementation of the policy decision for the reasons discussed above. 45. Further, we have examined the contents of the Eligibility Certificate issued by the Implementing Agency to the appellants. These certificates created enforceable rights to the appellants and the writ Court as an appellate Court cannot review the same when these certificates were issued on the basis of a particular Scheme as a policy matter. 46. As discussed above, the Scheme 1995 is the continuation of Scheme 1991 so far it relates to clause (5) of 1991 Policy. Therefore, the Scheme 1995 is applicable subject to the scrutiny and enquiry made by the Govt The appellants are at liberty to approach the respondents/Govt for implementation of the Scheme 1995 and for the benefits in the light of the Scheme 1991. The Govt may pass appropriate orders within a period of six weeks from the date of receipt of such representation from the appellants. 47. The appeals are allowed to the extent indicated above. No orders as to costs. D. Biswas, J-- 48. The Govt may pass appropriate orders within a period of six weeks from the date of receipt of such representation from the appellants. 47. The appeals are allowed to the extent indicated above. No orders as to costs. D. Biswas, J-- 48. I have seen the judgment written by my sister Mrs M. Sharma, J. I fully agree to the principles of law as discussed by her. There is no controversy that the State cannot resile from the promise it makes through its Industrial Policy for extending benefits like exemption of payment of taxes, rebate in rent for land and subsidies in different forms when the investors in pursuance of the said promise set up industrial units. Promise once held by the State cannot be withdrawn, except in certain exceptional circumstances, to the detriment of the investors. Therefore, I fully agree to the conclusion arrived at by my sister Mrs Sharma, J. that the incentives proposed in the Industrial Policy of Assam, 1991 cannot be taken away or abridged in any manner before the expiry of the period of concession promised to the industrial units. On this context, it has to be seen whether the Assam Industries (Sales Tax Concession) Scheme, 1995 in any manner has adversely affected the concessions proposed in the Industrial Policy of 1991. 49. It is, therefore, necessary to have a clear picture as to the incentives sought to be given to the new investors under the Industrial Policy of 1991. It may be mentioned here that the appellants had set up the industrial units on or before 1.4.1991, the effective date of enforcement of the Industrial Policy, 1991 and they had availed of full sales tax exemption as per earlier Industrial Policy of the State. The benefits sought to be given to these industrial units which were set up prior to 1.4.1991 is according to the appellants full sales tax exemption on the purchase of raw materials and also on the sale of finished products. But the contention of the State before this Court is that the sales tax exemption on the above two counts proposes to be given to the industrial units set up prior to 1.4.1991 was restricted to the extent of extra investments made for expansion/ modernization diversification only. 50. Clause 1.2 of Part II of the Industrial Policy, 1991 provides that the effective date for the 1991 incentives scheme is 1.4.1991. 50. Clause 1.2 of Part II of the Industrial Policy, 1991 provides that the effective date for the 1991 incentives scheme is 1.4.1991. Clause 2 defines the 'eligible unit'. Only new units set upon or after 1.4.1991 and the existing units undertaking expansion, modernisation or diversification at the same location or at any other place in the State of Assam has been declarecj eligible for incentives under 1991 Scheme. The appellants being industrial units set up prior to 1.4.1991 are in the category of existing units entitled to the incentives under 1991 Scheme provided they have undertaken expansion, modernisation or diversification as detailed in clause 2.1. In clause 4, the words 'existing units' have been clarified as unit which is or was in commercial production at any time prior to 1.4.1991. A joint reading of clause 2 and clause 4 on the face of it would show that the appellant industrial units which were setup prior to 1.4.1991 are also eligible for the incentives under the 1991 Scheme. Now let us examine the extent of incentives proposed to be given to the 'existing units' as defined above. 51. Clause 5 of the Industrial Policy spells out the incentives proposed to be given to the existing units. Clause 5 reads as follows : “5.Expansion/modernisation/diversification:Expansion/modernisation/dirsification of an existing industrial unit will also be eligible for all incentives if the total capital investment on plant and machinery in the expansion/modernisation or diversification as the case may be, is more than 25 percent of the total fixed capital investment or the existing unit. For the purpose of calculation, gross value of all the capital investments made on land, building, plant and machinery of an existing unit will be taken into consideration. Expansion, modernisation, diversification will imply an increase of atleast 25% in the existing installed capacity as well as increase of additional employment atleast by 10%. The fact that existing unit has availed itself of incentives will not disqualify the expansion/modernisation/diversification project to get incentives for the extra investment made.” 52. It would appear from clause 5 that the existing units which have undertaken expansion/modernisation/diversification have been made eligible for all incentives if the total capital investments in such expansion/modernisation/ diversification is more than 25 percent of the total fixed capital investments of the existing unit. It would appear from clause 5 that the existing units which have undertaken expansion/modernisation/diversification have been made eligible for all incentives if the total capital investments in such expansion/modernisation/ diversification is more than 25 percent of the total fixed capital investments of the existing unit. It has been further clarified that the expansion, modernisation 8 or diversification would also imply an increase of atleast 25% of the installed capacity of the existing unit with corresponding increase of additional employment atleast by 10%. 53. The second part of the clause 5 restricts the incentives to the existing unit to the extent of extra investments made. It is trust that the existing unit undertaking expansion/modernisation or diversification has been made eligible for incentives including full sales tax exemption. But the proposed full sales tax exemption has been restricted to the extra investments made by the existing units for the purpose of expansion/modernisation or diversification. It would further a appear from the said para that the existing units although they have availed of incentives under the earlier scheme shall not be ineligible to get the incentives for the extra investments made. 54. From above it would transpire that the existing units as defined in clause 4, which have been made eligible for incentives under the 1991 Scheme by clause 2, are entitled to the incentives by way of full exemption of sales tax for the specified purposes for the extra investments made. The extra investment implies an increase of atleast 25% of the existing installed capacity including increase of additional employment by 10% (clause 5). The intention behind the Industrial Policy of 1991 as reflected therein for the industrial units set up prior to 1.4 1991 is clear. There cannot be any doubt that the incentives promised to be given by the State by way of full sales tax exemption is to the extent of extra investments made and not otherwise. Therefore, in my opinion, the argument advanced on behalf of the appellants that they are entitled to full sales tax exemption like a new unit is not correct. 55. Now, let me refer to what is stated in the Assam Industries (Sales Tax Concession) Scheme, 1995. Therefore, in my opinion, the argument advanced on behalf of the appellants that they are entitled to full sales tax exemption like a new unit is not correct. 55. Now, let me refer to what is stated in the Assam Industries (Sales Tax Concession) Scheme, 1995. This scheme has been prepared by the State Govt in exercise of the powers conferred under sub-section (4) of section 9 read with clause (f) of sub-section (3) of section 74 of the Assam General Sales Tax Act, 1993. It provides for relief by way of full exemption of sales tax on the purchase of raw materials within the State of Assam by the eligible industrial units situated within the State of Assam and also on the sale of the finished products manufactured in such eligible units in the State of Assam or in course of inter State trade or commerce. This scheme has been brought into force with effect from 1.4.1991.Although not spelt out in explicit term, the provisions of the scheme appears to be to give effect to the Industrial Policy of 1991. In para 2 of the scheme, eligibility of industrial units have been defined. New industrial unit has been defined in para 2A.The unit which is or was under production prior to 1.4.1991 undertaking expansion/modernisation/diversification to the minimum extent of 25% at the same location has been dealt with in para 2B. It reads as follows : “ 'B' An industrial unit, having its registered office within the State of Assam, which is or was in production at any time prior to 1.4.1991 undertaking expansion/modernisation/diversification to the minimum extent of 25% at the same location or at other place(s) of the State of Assam and with an additional employment of atleast10% and is in compliance with the criteria on the industrial unit's employing the people of Assam shall be treated as an eligible industrial unit fbr the purpose of this scheme. For the purpose of getting benefit under this Scheme, the minimum extent of expansion/modernisation/diversification as referred to above shall be 25% of the total fixed capital investment of the unit prior to such expansion/modernisation/diversification. For the purpose of calculation of gross value, all capital investment made on land, building, plant & machinery or a unit, which is or was in production at any time prior to 1.4.91 shall be taken into consideration.” 56. For the purpose of calculation of gross value, all capital investment made on land, building, plant & machinery or a unit, which is or was in production at any time prior to 1.4.91 shall be taken into consideration.” 56. It would appear from para 'B' that the appellants who are in production prior to 1.4.1991 fall within the above category and they have been given limited benefit only for the expansion/modernisation or diversification subject to certain conditions. In para 7, we find the procedure for determination in increase of production of an industrial unit which undertakes expansion/modernisation/ diversification. In para 10 A' and 'B', procedure have been prescribed with regard to raw materials and finished products so far they apply to the 'existing units'. A joint reading of the provisions of Industrial Policy of 1991 with the provisions of the Scheme of 1995 as above prepared under the provisions of the Assam General Sales Tax Act, 1993 would show that the incentives promised to be given by the State in its Industrial Policy of 1991 have not been in anyway taken away or restricted in any manner so as to prejudice the appellants. In fact, the scheme prepared in 1995 is in conformity with what have been spelt out in the policy decision of 1991. The scheme framed in 1995 under the provisions of the Assam General Sales Tax Act, 1993 and brought into force wef 1.4.1991 is in fact a legislative measure adopted to implement the Policy of 1991. The argument that the State has withdrawn the incentives declared in 1991 with retrospective effect is, therefore, of no significance. In my opinion, there is practically no difference in the promise made in the Industrial Policy of 1991 and the scheme prepared in 1995. The appellants being 'existing units' as defined in the Industrial Policy of 1991 have obviously no cause to vindicate. The policy decision of 1991 extended full sales tax exemption for 7 years to the new units while it conferred restricted benefits to the 'existing units' to the extent of expanded industrial activity only. That being the position, I am of the opinion that these appeals are devoid of merit and deserves dismissal.