Due date for Form GSTR-9C, GSTR-9 extended to 28.02.2022 for FY 2020-21:
The due date for furnishing annual return in FORM GSTR-9 & self-certified reconciliation statement in FORM GSTR-9C for the financial year 2020-21 has been extended from 31.12.2021 to 28.02.2022.

Please find the referral link: https://cbic-gst.gov.in/pdf/central-tax/notfctn-40-central-tax-english-2021.pdf