Prospective operation of exemption notifications: concessional excise benefit applied only from the notification date, not earlier.

An exemption notification issued under delegated legislation is presumed to operate prospectively from its date of issue unless its language clearly provides retrospective effect. Notification No. 142/78-Central Excise was therefore read as granting concessional duty on tyres and tubes only from 14.7.1978, while clearances made earlier in the financial year had to be counted only for computing the ceiling. The claimed refund for the earlier period failed because the notification did not expressly extend the benefit back to 1.4.1978.

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Issues: Whether Notification No. 142/78-Central Excise dated 14.07.1978 conferred concessional duty benefit for clearances made from 1.4.1978 or only from 14.7.1978.

Analysis: The notification was issued under rule 8(1) of the Central Excise Rules, 1944 and granted exemption to tyres and tubes within an overall ceiling linked to 75 per cent of the licensed capacity for the financial year 1978-79. The explanation required quantities already cleared at concessional rate under Notification No. 198/76 during 1.4.1978 to 13.7.1978 to be taken into account while computing that ceiling. On a plain reading, the notification did not state that the net entitlement operated retrospectively from 1.4.1978. The settled principle applied was that an exemption notification operates prospectively from its date of issue unless the text clearly provides otherwise.

Conclusion: The concessional benefit under Notification No. 142/78 was available only on and from 14.7.1978, not from 1.4.1978.

Final Conclusion: The refund claim for the earlier period failed because the exemption notification did not operate retrospectively, and the appeal was rejected.

Ratio Decidendi: An exemption notification issued under delegated legislation is presumed to operate prospectively from its date of issue unless its language clearly and expressly provides retrospective effect.

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