State tax rebate discrimination under Article 304(a) turns on effect, and an invalid local restriction may be severed.

A State tax rebate that, by design or practical effect, gives preferential treatment to local manufacturers and disadvantages similar goods from outside the State is discriminatory under Article 304(a) and burdens the freedom of trade under Article 301. The label of the measure as a "rebate" does not matter if it operates like a concessional tax or exemption. Where the offending territorial restriction is severable, only that condition may be struck down and the remaining rebate scheme may continue to operate.

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Issues: (i) Whether rebate of tax granted under Section 5 of the Uttar Pradesh Trade Tax Act, 1948, in favour of cement units established in Uttar Pradesh alone and using fly-ash from Uttar Pradesh violated Articles 301 and 304(a) of the Constitution of India; (ii) whether rebate of tax, in its effect, operated as a concessional rate of tax or exemption attracting the constitutional prohibition against discrimination; (iii) whether the offending condition in the notification was severable from the rest of the notification.

Issue (i): Whether rebate of tax granted under Section 5 of the Uttar Pradesh Trade Tax Act, 1948, in favour of cement units established in Uttar Pradesh alone and using fly-ash from Uttar Pradesh violated Articles 301 and 304(a) of the Constitution of India.

Analysis: Article 301 guarantees freedom of trade, commerce and intercourse throughout India, while Article 304(a) permits State taxation only if similar imported goods are not discriminated against vis-a -vis goods manufactured or produced within the State. A State measure that, by design or effect, gives a preferential tax treatment to local goods and places similar goods from outside the State at a higher disadvantage creates a fiscal barrier and offends the constitutional mandate of non-discrimination.

Conclusion: The impugned rebate scheme, to the extent it confined the benefit to units established in Uttar Pradesh, was violative of Articles 301 and 304(a) and was against the assessee's challenge.

Issue (ii): Whether rebate of tax, in its effect, operated as a concessional rate of tax or exemption attracting the constitutional prohibition against discrimination.

Analysis: Though labelled as rebate, the measure reduced the effective tax burden on local manufacturers and had the same practical impact as an exemption or concessional rate of tax. In constitutional adjudication under Article 304(a), the decisive question is the effect of the measure on free flow of goods and competitive equality, not the label attached to it. The rebate therefore functioned as a tax device capable of discriminating against like goods brought from outside the State.

Conclusion: The rebate was treated as a form of concessional taxation and held to attract Article 304(a), in favour of the assessee.

Issue (iii): Whether the offending condition in the notification was severable from the rest of the notification.

Analysis: Under the doctrine of severability, an invalid part may be struck down if the remaining part is complete and can operate independently without changing the object or structure of the measure. The restriction confining the benefit to Uttar Pradesh-based units was separable from the broader rebate scheme, and deleting that condition did not destroy the incentive-based character of the notification.

Conclusion: The offending condition was severable and alone was liable to be struck down, while the rest of the notification survived in favour of the assessee.

Final Conclusion: The Court upheld the constitutional challenge to the discriminatory local restriction, severed the invalid condition, and preserved the rebate notification for eligible cement manufacturers without confining it to units established within Uttar Pradesh.

Ratio Decidendi: A State tax rebate that, in effect, confers a preferential tax burden on local goods or local manufacturers and disadvantages similar goods from outside the State is discriminatory under Article 304(a); if the offending restriction is severable, only that restriction may be struck down.

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