Chapter 30: GST Compliance Calendar and Best Practices

A robust compliance calendar is essential for timely filing of GST returns, payment of tax, and avoidance of penalties. Below is the standard monthly schedule applicable to regular taxpayers, with updated due dates under current GST norms.

Note:

If the due date falls on a public holiday, it is generally extended to the next working day.

Late filing attracts late fees (Sec. 47) and interest (Sec. 50) at prescribed rates.

Beyond monthly obligations, GST law prescribes periodic and annual filings to ensure reconciliation and reporting accuracy.

2.1 Quarterly Compliance (QRMP Scheme)

Eligibility: Registered persons with aggregate turnover ≤ ₹5 crore in preceding FY.

2.2 Annual Compliance

Key Reminder: Maintain reconciliation between GSTR-1, GSTR-3B, and GSTR-2B every month to ensure ITC accuracy and avoid notices under Section 73/74.

Many taxpayers face notices, mismatches, or interest liabilities due to avoidable errors. Below are the most frequent mistakes and their preventive strategies.

3.1 Input Tax Credit (ITC) Errors

3.2 Return Filing Mistakes

3.3 Payment and Late Fee Issues

Interest applies on delayed tax payment (18%).

Late fee capped at ₹5,000 per return.

Regular reminders or auto-scheduling in digital tools can prevent such lapses.

The digital transformation of GST compliance has made automation essential for accuracy and time-saving. Below are key tools and systems available to tax professionals and businesses.

4.1 Official Platforms

4.2 Automation and Reconciliation Tools

4.3 Data Security and Privacy

With integration across multiple systems, maintaining data privacy is critical:

Use two-factor authentication (2FA) for GST logins.

Avoid sharing OTPs with third-party accountants.

Regularly back up Excel/JSON data offline.

Use consent-based data access tools (per DPDP Act, 2023).

To maintain compliance discipline and minimize litigation, adopt the following best practices:

✅ Monthly Reconciliation Discipline

Match GSTR-1 vs 3B vs 2B every filing cycle.

Identify mismatches early to avoid DRC-01C notices.

✅ Maintain Proper Documentation

Keep invoices, e-way bills, LUTs, and reconciliation sheets for 6 years (Sec. 36).

Maintain digital folders client-wise / month-wise.

✅ Timely Payment and Pre-Deposits

Avoid interest by paying through PMT-06 before 20th.

For appeals, compute 10% pre-deposit accurately to prevent rejection.

✅ Vendor Communication

Regularly follow up with vendors for timely GSTR-1 filing.

Use vendor-compliance dashboards or plug-ins to monitor status.

✅ Audit Trail and Record Retention

Preserve all logs, workings, and computation sheets for future audits.

Maintain email trail for client approvals and communication.

✅ Technology Adoption

Use cloud-based compliance dashboards for multiple clients.

Automate reminders using Google Calendar or Make.com workflows.