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FAQ :
The notification seeks to extend the last date for furnishing the annual return and reconciliation statement in FORM GSTR-9 and FORM GSTR-9C.
The extension applies to the period from 1st July 2017 to 31st March 2018.
The forms mentioned are FORM GSTR-9 (Annual Return) and FORM GSTR-9C (Reconciliation Statement).
You can download the notification from the provided link.
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Source : http://www.cbic.gov.in/htdocs-cbec/gst/notfctn-06-central-tax-english-2020.pdf