Seeks to amend Notification No. 13/2017–Central Tax, dated the 28th June, 2017 - A lower rate of interest of NIL for first 15 days after the due date of filing return in FORM GSTR-3B and @ 9% thereafter is notified for those registered persons having aggregate turnover above ₹ 5 Crore and NIL rate of interest is notified for other cases for certain period. - 31/2020 - Central GST (CGST)

Interest relief on delayed GST returns: reduced or nil interest for eligible taxpayers filing specified GSTR-3B returns within notified extended dates.

Amends the central GST notification to prescribe specified rates of interest for delayed FORM GSTR-3B filings based on classes of registered persons by aggregate turnover and designated tax periods, providing conditional nil interest windows and reduced interest treatment for eligible filers who submit returns by the extended dates set out in the inserted Table; the amendment is effective retrospectively from the stated commencement date.