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Common GST Filing Mistakes and How to Avoid Them in 2025

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  • by MI September 17, 2025

Filing GST correctly is crucial for businesses to avoid penalties and ensure smooth compliance. With GST 2.0 in 2025, many businesses are still making avoidable mistakes. Here’s a comprehensive guide on the most common GST filing mistakes and practical tips to avoid them.

1. Mismatched or Incorrect GSTIN Details

  • Ensure the GSTIN of the supplier and recipient are correctly entered.
  • Double-check invoice details to avoid mismatches in GSTR-2B/3B.
  • Use GST portal verification tools for accuracy.

2. Incorrect HSN/SAC Codes

  • Goods and services must be classified under correct HSN/SAC codes.
  • Misclassification can lead to ITC mismatches or penalties.
  • Refer to updated GST 2.0 HSN/SAC code lists.

3. Late or Missed Filing

  • Always file GST returns within due dates.
  • Set reminders or automate filing using accounting software.
  • Late filing can attract interest, penalties, or disallow ITC claims.

4. Mismatch in Input Tax Credit (ITC)

  • Ensure ITC claimed matches supplier’s uploaded invoices.
  • Rectify discrepancies before filing GSTR-3B.
  • Regularly reconcile ITC to avoid claim rejections.

5. Errors in Reverse Charge Mechanism (RCM) Transactions

  • Identify if the transaction falls under RCM correctly.
  • Report RCM GST in the correct section of GSTR-3B.
  • Keep supporting documents ready for verification.

6. Incorrect GST Rate Applied

  • Apply the correct GST rate as per GST 2.0 slabs (0%, 5%, 12%, 18%, 28%).
  • Check notifications for changes in tax rates.
  • Misapplied rates can cause ITC disputes and penalties.

Tips to Avoid GST Filing Mistakes

  • Maintain accurate and timely purchase and sales records.
  • Use GST-compliant accounting software integrated with GST 2.0.
  • Reconcile supplier and customer invoices regularly.
  • Keep updated with GST notifications and changes in rates.
  • Consult a GST practitioner if unsure about complex transactions.

Conclusion

Avoiding common GST filing mistakes is key to smooth compliance under GST 2.0 in 2025. By following these tips and maintaining accurate records, businesses can prevent penalties, ensure correct ITC claims, and simplify the GST filing process.

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