This document details the apportionment of Input Tax Credit (ITC) under Sections 17(1), 17(2), and 17(3) of the CGST Act, 2017, explaining how to allocate credit for business, non-business, taxable, and exempt supplies. It also covers the crucial aspects of 'Blocked Credit' as per Section 17(5), outlining specific goods and services for which ITC is not permissible, with practical examples and explanations of relevant rules like 42 and 43. This guide is invaluable for registered persons seeking to accurately claim and manage their ITC.