GST Return Filing Checklist Minchala & Associates, Chartered Accountants A monthly GST return preparation checklist for outward supplies, ITC review, GSTR-2B matching and portal records. Checklist 1. Reconcile outward sales with invoices, credit notes, debit notes and books. 2. Match input tax credit with GSTR-2B, vendor invoices and books. 3. Review reverse charge, exempt supplies, nil-rated supplies and advances where applicable. 4. Check e-invoice, e-way bill and HSN/SAC reporting requirements. 5. Review GSTR-1 and GSTR-3B values before submission. 6. Save filed returns, challans, ledgers and reconciliation notes. Disclaimer: This checklist is general educational guidance only and is not professional advice. Requirements depend on facts, current law, portal records, due dates, notifications and engagement scope. A formal professional engagement begins only after acceptance, independence/conflict checks and document review.