Ans. The GST System Project is a unique and complex IT initiative. It is unique as it seeks, for the first time to establish a uniform interface for the tax payer and a common and shared IT infrastructure between the Centre and States. Currently, the Centre and State indirect tax administrations work under different laws, regulations, procedures and formats and consequently the IT systems work as independent sites. Integrating them for GST implementation would be complex since it would involve integrating the entire indirect tax ecosystem so as to bring all the tax administrations (Centre, State and Union Territories) to the same level of IT maturity with uniform formats and interfaces for taxpayers and other external stakeholders. Besides, GST being a destination based tax, the inter- state trade of goods and services (IGST) would need a robust settlement mechanism amongst the States and the Centre. This is possible only when there is a strong IT Infrastructure and Service back bone which enables capture, processing and exchange of information amongst the stakeholders (including taxpayers, States and Central Government, Bank and RBI). To achieve these objectives GSTN was created.