- Form GST REG-26 i.e. application for enrollment of existing taxpayers: December 31, 2017.
- Form GST ITC-04 i.e. details of goods/capital goods sent to job-worker and received back during the quarter July to September: December 31, 2017.
- Form GSTR-5 i.e. return for non-resident taxable person for the months of July, August, September, November and December, 2017: December 31, 2017.
- Form GSTR-5A i.e. details of supplies of online information and database access or retrieval services by a person located outside India made to non-taxable person in India for the months of July, August, September, November and December, 2017: January 31, 2018.
- Form GST ITC-01 i.e. declaration for claim of input tax credit under sub-section(1) of section 18 by the registered persons who have become eligible during the months of July, August, September, November and December, 2017: January 31, 2018.
- Form GST CMP-03 i.e. intimation of details of stock on date of opting for composition levy: January 31, 2018.