10 Silent GST Compliance Mistakes That Can Trigger Scrutiny Notices and Penalties

Professional Guidance for Businesses and GST Practitioners

The Goods and Services Tax (GST) administration has significantly strengthened its compliance monitoring through data analytics, artificial intelligence, and automated reconciliations of GST returns, e-Invoices, E-Way Bills, and financial statements. Consequently, even routine compliance lapses may trigger scrutiny proceedings under Section 61 of the CGST Act, 2017, resulting in issuance of Form GST ASMT-10.

A proactive compliance framework and periodic reconciliations are therefore essential to mitigate the risk of tax demands, interest, penalties, and prolonged litigation.

 

1. Non-Reversal of Input Tax Credit Where Payment to Supplier Is Not Made Within 180 Days

Section 16(2) of the CGST Act requires reversal of Input Tax Credit (ITC), together with applicable interest, where consideration for the supply is not paid to the supplier within 180 days from the date of the invoice. The ITC may subsequently be re-availed upon actual payment to the supplier.

Professional Precautions

·         Maintain a periodic ageing analysis of outstanding trade creditors.

·         Review all unpaid invoices before filing monthly GST returns.

·         Reverse ITC, wherever applicable, within the prescribed timelines.

·         Retain documentary evidence supporting subsequent re-availment of credit.

 

2. Non-Reversal of ITC Attributable to Exempt Supplies

Where a registered person is engaged in both taxable and exempt supplies, proportionate reversal of ITC is mandatory in accordance with Rules 42 and 43 of the CGST Rules, 2017. Failure to comply may result in tax demands along with interest and penalties.

Professional Precautions

·         Identify exempt supplies at the transaction stage.

·         Perform monthly and annual Rule 42 and Rule 43 computations.

·         Preserve detailed reconciliation and calculation sheets.

·         Review capital goods separately for ITC eligibility.

 

3. Non-Reporting of Taxable Miscellaneous Income

Certain receipts, including scrap sales, commission income, recoveries, or other incidental receipts, may be liable to GST depending upon the nature of the transaction. Differences between books of account, financial statements, and GST returns are frequently selected for verification.

Professional Precautions

·         Reconcile all income ledgers with GST returns.

·         Evaluate GST implications of every non-operating receipt.

·         Maintain documentation supporting taxability or non-taxability.

·         Conduct periodic reconciliation between financial statements and GST returns.

 

4. Incorrect Treatment of Advances Received

GST is generally payable on advances received towards the supply of services. Failure to account for taxable advances may result in reconciliation differences and departmental scrutiny.

Professional Precautions

·         Maintain a separate register of advances received.

·         Monitor adjustment of advances against subsequent invoices.

·         Reconcile advances with books of account and GST returns.

·         Review year-end outstanding advances for GST implications.

 

5. Non-Compliance with Reverse Charge Mechanism (RCM)

Liability under the Reverse Charge Mechanism applies to specified supplies notified under the GST law. Failure to discharge such liability may lead to tax demands, interest, and consequential denial or delay of ITC.

Professional Precautions

·         Prepare a monthly Reverse Charge compliance checklist.

·         Review transactions relating to Goods Transport Agencies (GTA), legal services, import of services, and other notified supplies.

·         Ensure timely payment of GST under Reverse Charge before availing ITC.

·         Maintain complete supporting documentation for all RCM transactions.

 

6. Incorrect Valuation of Related Party Transactions

Transactions between related persons, distinct persons, branches, or associated enterprises are governed by Rule 28 of the CGST Rules. Inappropriate valuation may result in additional GST liability and interest.

Professional Precautions

·         Identify all related-party transactions at the commencement of each financial year.

·         Maintain comprehensive valuation documentation.

·         Review inter-branch and inter-unit transactions periodically.

·         Ensure compliance with the valuation provisions prescribed under GST law.

 

7. Delay in Filing GSTR-1

Delayed filing of GSTR-1 may adversely affect recipients’ ITC and may also result in departmental scrutiny where inconsistencies arise with GSTR-3B, e-Invoices, or other available data.

Professional Precautions

·         Establish a robust GST compliance calendar.

·         Complete reconciliations well before statutory due dates.

·         Verify successful filing acknowledgements.

·         Avoid last-minute filing to mitigate system-related issues.

 

8. Availment of Ineligible Input Tax Credit

Section 17(5) of the CGST Act specifically restricts ITC on certain goods and services, including blocked credits. Incorrect availment is frequently identified during departmental audits.

Professional Precautions

·         Segregate blocked credits through dedicated accounting codes.

·         Review all expense ledgers before availing ITC.

·         Obtain professional advice in cases involving interpretational issues.

·         Conduct periodic internal reviews of ITC eligibility.

 

9. Mismatch Between GSTR-1 and GSTR-3B

Differences between outward supplies reported in GSTR-1 and tax discharged through GSTR-3B continue to be one of the primary reasons for scrutiny notices.

Professional Precautions

·         Perform monthly reconciliation between GSTR-1 and GSTR-3B.

·         Investigate and rectify all discrepancies before filing returns.

·         Match turnover with books of account, e-Invoice data, and financial statements.

·         Preserve reconciliation statements for audit purposes.

 

10. Availment of ITC Without Reconciliation with GSTR-2B

Input Tax Credit should be claimed only after verifying compliance with statutory conditions, including reconciliation with GSTR-2B and supporting tax invoices.

Professional Precautions

·         Perform vendor-wise GSTR-2B reconciliation every month.

·         Follow up with suppliers regarding missing invoices.

·         Review vendor compliance status periodically.

·         Maintain comprehensive reconciliation records for future verification.

 

Professional Best Practices to Minimise GST Litigation Risk

Every business should establish a structured GST compliance framework incorporating the following measures:

·         Monthly reconciliation of GSTR-1, GSTR-3B, GSTR-2B, e-Invoices, E-Way Bills, and books of account.

·         Quarterly internal GST compliance review or GST health check.

·         Periodic review of vendor compliance and ITC eligibility.

·         Timely identification and rectification of return mismatches.

·         Maintenance of complete documentary evidence supporting all GST positions.

·         Regular monitoring of amendments, notifications, circulars, and judicial pronouncements.

·         Implementation of maker-checker controls for GST return preparation.

·         Periodic management reporting highlighting GST compliance risks.

·         Preservation of reconciliation statements and audit working papers.

·         Timely and comprehensive response to notices issued by the GST Department.

 

Scrutiny Proceedings under Section 61

Where discrepancies are identified during return scrutiny, the Proper Officer may issue Form GST ASMT-10 seeking an explanation from the registered person.

The taxpayer is ordinarily required to furnish an appropriate reply in Form GST ASMT-11 within the prescribed period. Failure to provide a satisfactory response may result in initiation of further proceedings under the applicable provisions of the CGST Act.

 

Conclusion

In the present technology-driven GST environment, the majority of scrutiny notices arise from data mismatches and procedural non-compliance rather than complex legal disputes. Businesses should therefore adopt a robust compliance mechanism supported by periodic reconciliations, adequate documentation, and professional review. A proactive approach significantly reduces exposure to tax demands, interest, penalties, and avoidable litigation.

Disclaimer: This article is intended solely for educational and informational purposes. The applicability of GST provisions depends upon the specific facts of each case and should be evaluated with reference to the CGST Act, 2017, the CGST Rules, applicable notifications, circulars, and judicial pronouncements in force on the relevant date.