This document discusses guidelines and recommendations for maximizing input tax credit under the Goods and Services Tax (GST) regime in India. It provides an overview of the current input tax credit system and its limitations. Under GST, input tax credit will be allowed on most central and state taxes and duties. There are still some open issues regarding mechanisms like the Input Service Distributor and availability of credit on certain purchases. The document recommends identifying tax costs, reviewing supply chain operations, and configuring accounting in SAP to track input tax credits by registration and tax component in order to fully utilize credit availability under GST.