The GST IT Common Platform of GSTN provides multiple ways to file/upload the invoice level details depending on the convenience and the size of taxpayer. The most rudimentary route to upload the invoice level details will be the web interface of GST Common Portal. GSTN will be providing an utility to either enter the details offline and upload it in one go or export it from the system of taxpayer and upload it in GST database. Various popular accounting software providers are also in the process of integrating their systems with GST common portal through Application Programming Interfaces (APIs) provided to GSPs by GSTN for filing online, the different documents like Invoice, Outward Supply Statement, Inward Supply Statement, Returns etc.
GSTN is also creating a GST Suvidha Providers’ (GSP5) framework where GSPs are registered to develop their GST Compliant IT platforms. GSTN has provided different APIs for different business processes along with data entities and process requirements like filing Invoice, Outward Supply Statement, Inward Supply Statement, Returns, Refund applications, Payment, Registration etc. These GSPs shall enable ASPs and other ERP users also to file their documents providing APIs interfaces. They are expected to enable taxpayers for effective tax compliance through IT enabled end to end GST business solution. GSPs shall have facility of uninterrupted connectivity with GST Common Portal through APIs for performing different business requirements of the taxpayers.
GSTN is also providing an offline utility to prepare and file returns for small and medium size of taxpayers free of cost. The application will be available at GST portal and taxpayer may download at their system for use. They may upgrade the system from time to time.