GST Compliance Checklist for Q1 2026

Introduction

GST compliance requires meticulous attention to deadlines and documentation. This comprehensive checklist will help you stay on top of all quarterly compliance requirements for Q1 2026.

Monthly Returns

GSTR-1 (Outward Supplies)

• Due Date: 11th of following month
• Contains details of all outward supplies
• Must reconcile with sales register and invoices

GSTR-3B (Summary Return)

• Due Date: 20th of following month
• Summary of outward and inward supplies
• Tax liability and input tax credit details

Quarterly Requirements

• ITC Reconciliation: Match GSTR-2A with purchase records
• E-Way Bill Compliance: Ensure all interstate movements are documented
• TDS/TCS Returns: File GSTR-7 and GSTR-8 if applicable

Best Practices

Maintain proper documentation, reconcile accounts monthly, and use GST-compliant software to minimize errors and ensure timely filing.