In simple wordings -
According to Section 7 of the CGST Act, a transaction is generally considered a "supply" only when there is a consideration for the goods or services exchanged. However, Schedule I, lists certain exceptions where activities without consideration can still be regarded as a supply.
For example, free services or goods provided between related parties, employees, or distinct persons may still be classified as a supply under Schedule I, even if there is no direct benefit or payment received in return. This means that even in the absence of consideration, these activities may be subject to GST.
Therefore, while the absence of consideration usually implies that the activity would fall outside the scope of supply, the provisions of Schedule I create exceptions where GST obligations may still arise, even if no money is exchanged.
In essence, it is crucial for businesses to carefully review their transactions to determine whether they fall under the "free service" or other similar provisions in Schedule I, as failure to do so may result in unintended GST liabilities.