This document discusses principles of integrated goods and service tax in India. It explains key concepts like inter-state versus intra-state supply and the place of supply for goods and services. For goods, the place of supply is generally where the movement of goods ends or where it is delivered. For services, the location depends on factors like whether the recipient is registered, the type of service (e.g. immovable property), and location of performance or event. The document also covers refunds, including for zero-rated supplies, accumulated input tax credit due to inverted duty structure, and exports.