GST Services Notification issued for Extension of Due Dates of Filing GSTR-9 & GSTR-9C - November 2, 2020 - admin CBIC has issued the Notification No. 80/2020 – CT dated 28th October, 2020 for notifying the extension of due dates for Filing GTSR-9 & GSTR-9C for F.Y. 18-19 from 31st October, 2020 to 31st December, 2020.