Supreme Court Rules 2002 CST Amendment Cannot Retrospectively Nullify Accrued Exemptions for Prism Cement

In a significant ruling on tax law, the Supreme Court of India has upheld the prospective application of the 2002 amendment to the Central Sales Tax Act , affirming that vested exemption rights granted under pre-amendment incentive schemes cannot be retrospectively withdrawn . The judgment, delivered by a bench comprising Justice Pamidighantam Sri Narasimha and Justice Pankaj Mithal on February 12, 2025 , dismissed appeals filed by the State of Maharashtra against Prism Cement Limited .

The Dispute: Absolute Exemptions Under the 1993 Incentive Scheme

The case arose from the Maharashtra Package Scheme of Incentives, 1993, designed to promote industrial development in backward areas. Prism Cement Limited was granted eligibility and entitlement certificates on February 20, 1998 , and March 24, 1998 , respectively, entitling it to full or partial sales tax exemption under both the Bombay Sales Tax Act and the Central Sales Tax Act . The exemption was absolute, with no requirement to produce declarations in Form 'C' or 'D' as mandated under Section 8(4) of the CST Act .

However, following the Finance Act, 2002 , which amended Section 8(5) of the CST Act with effect from May 11, 2002 , the State of Maharashtra issued trade circulars and notices seeking to revise the assessee's tax assessments for the years 2002-2003 to 2004-2005. The state demanded refund of the exempted tax, arguing that the amendment made the exemption conditional on submission of Form 'C' and 'D' . The Bombay High Court quashed these circulars, holding the amendment prospective, and the state appealed to the Supreme Court.

Arguments: Retrospective vs. Prospective Operation

The State of Maharashtra contended that after the 2002 amendment, the power to grant exemptions under Section 8(5) was circumscribed by the requirements of Section 8(4). It argued that since Prism Cement had not furnished the prescribed declarations, the exemption was no longer valid for inter-state sales made after May 11, 2002 .

Prism Cement countered that the exemption was granted under the unamended Section 8(5), which conferred absolute power on the state to dispense with formalities. The company asserted that a substantive right to exemption had accrued through the eligibility and entitlement certificates, which could not be retrospectively taken away without explicit legislative intent.

Legal Analysis: The Principle of Prospective Legislation

The Supreme Court relied on the cardinal principle that every statute is prima facie prospective unless expressly or by necessary implication made retrospective. The court observed that the 2002 amendment did not contain any language indicating an intention to affect existing rights or nullify exemptions already granted.

The bench noted that the amendment was introduced to overcome the decision in Shree Digvijay Cement Co. Ltd. v. State of Rajasthan , which had held that Section 8(5) overrides Section 8(4). However, the amendment only restricted the power to grant exemptions going forward, without revoking benefits already accrued.

Citing Darshan Singh v. Ram Pal Singh , the court stated that benefits conferred prior to an amendment remain unaltered, though future availment may be subject to new conditions. The court also referred to MRF Ltd. Kottayam v. Asstt. Commissioner , where premature deprivation of exemption benefits was held arbitrary. In Southern Petrochemical Industries Co. Ltd. v. Electricity Inspector , the court similarly ruled that withdrawal of exemption cannot affect rights already accrued unless the statute provides otherwise.

Key Observations

The Supreme Court emphasized that the state had not revoked the eligibility or entitlement certificates. It held:

"The assessee-respondent was not given any notice either cancelling the Eligibility Certificate or the Entitlement Certificate . Therefore, without revoking the said certificates, the substantive right which had accrued to the assessee-respondent thereunder continues to subsist and does not get impacted by the subsequent amendment of Section 8(5) inasmuch as there is nothing in the amended provision which provides for taking away such a right granted to the assessee-respondent."

The court further noted:

"It is a cardinal principle of construction that every statute is prima-facie perspective in nature unless it is expressly or by necessary implication made to have retrospective operations . Unless there are words in the statutes sufficient to show the intention of the legislature to affect existing rights , it is deemed to be prospective only ."

The Verdict and Its Implications

The Supreme Court dismissed the appeals, upholding the Bombay High Court 's order. The court declared that the requirement to submit Form 'C' and 'D' under Section 8(4) applies only prospectively from May 11, 2002 , and cannot be enforced against exemptions already accrued under pre-amendment schemes.

This ruling reinforces the protection of vested rights in tax incentive schemes. The principle that substantive rights granted through executive action cannot be unilaterally withdrawn without notice or hearing has been reaffirmed. The decision is expected to impact similar cases where states attempt to retrospectively apply amended tax provisions to ongoing exemption periods.

The judgment also resonates beyond sales tax, as the doctrine of prospective legislation and protection of accrued rights is a cornerstone of legal certainty . In recent debates over retrospective amendments in mineral taxation, this ruling provides a compelling analogy—once a right has legally accrued, the state cannot take it away without clear legislative mandate.