GST MONTHLY COMPLIANCE CHECKLIST Northbridge Advisory LLP [ ] Reconcile sales register with books [ ] Reconcile purchases with GSTR-2B [ ] File GSTR-1 (11th, or per QRMP schedule) [ ] Compute net liability and ITC utilisation [ ] File GSTR-3B and pay tax (20th) [ ] Review e-invoice and e-way bill exceptions [ ] Reverse ITC where payment to suppliers is pending beyond 180 days [ ] Archive acknowledgements