Extension of GSTR-3B late fee amnesty extends deadline for specified provisos, substituting the earlier deadline. The Government, under section 128 of the Central Goods and Services Tax Act, 2017, by Notification No. 33/2021 dated 29th August 2021, amends Notification No. 76/2018-Central Tax by substituting the earlier specified date in the ninth and tenth provisos with a later date, thereby extending the deadline applicable to those provisos and prolonging the period for concessional treatment of late FORM GSTR-3B filings.