GST registration holders are required to file GSTR-3B return every month providing details of sales and purchases made in a month to the Government. GSTR-3B return is due on the 20th of each month. Form GSTR-3B is a simplified summary return and the purpose of the return is for taxpayers to declare their summary GST liabilities for a particular tax period and discharge these liabilities. A normal taxpayer is required to file Form GSTR-3B returns for every tax period.

In addition to GSTR-3B return, businesses registered under GST must file GSTR-1 return. GSTR-1 return must be filed every month by businesses having annual revenue of over Rs.1.5 crores. In case a business has a yearly revenue of less than Rs.1.5 crores, GST return should be filed every quarter. For the taxpayers who have opted to file Form GSTR-1 on monthly frequency, the system computed GSTR-3B will be generated and will be available on their GSTR-3B dashboard page after Form GSTR-1 has been filed by them.

This facility at present, has been enabled only for those taxpayers who have opted to file Form GSTR-1 at monthly frequency. GSTR-1 is a monthly Statement of Outward Supplies to be furnished by all normal and casual registered taxpayers making outward supplies of goods and services or both and contains details of outward supplies of goods and services.

Every registered taxable person, other than an input service distributor/composition taxpayer/persons liable to deduct tax u/s 51 persons liable to collect tax u/s 52 is required to file GSTR-1, the details of outward supplies of goods and/or services during a tax period, electronically on the GST Portal.