Inter-State Trade and Commerce is governed by Part XIII of the Constitution to ensure economic unity and free movement across India.

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• Part XIII of the Constitution, Articles 301 to 307, governs inter-state and intra-state trade, commerce and intercourse.
• Trade refers to buying and selling of goods, while commerce includes transportation by land, air and water.
• Intercourse signifies the movement and passage of goods and commercial transactions across places and states.
• Article 301 guarantees freedom of trade, commerce and intercourse throughout the territory of India.
• Article 302 empowers Parliament to impose non-discriminatory restrictions in public interest.
• Articles 303 and 304 prohibit discrimination among states while permitting reasonable, regulated taxation.
• Article 307 allows Parliament to appoint authorities to implement trade and commerce provisions effectively.
• These provisions promote economic integration, national unity and reduction of inter-state trade barriers