I am an Amazon/Flipkart regular GST seller. GSTR-1 and GSTR-3B for June, July and August 2025 were mistakenly filed NIL, although actual taxable sales of ₹11,61,353.77 were made during these months.

 I want to legally regularise the omitted turnover and pay applicable GST/interest.


Please tell me the exact procedure/return/table through which this can be regularised and your consultation fee for this specific issue. I do not require full accounting/ITR services.