GSTR-1 due date extension: outward-supply monthly returns now due on the eleventh day of the following month. The Commissioner, on Council recommendations and under statutory powers, extends the due date for furnishing details of outward supplies in Form GSTR-1 by registered persons exceeding the aggregate turnover threshold to the eleventh day of the month succeeding each relevant month; the corresponding time limit for furnishing recipient-facing returns is to be notified subsequently in the Official Gazette.