GST Year-End Compliance Checklist: Critical Actions Before 31st March 2026

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As the financial year draws to a close, businesses must evaluate whether their GST compliances align with statutory requirements under the CGST Act, 2017 and Rules made thereunder. The key issue is ensuring accuracy of returns, eligibility of Input Tax Credit (ITC), and completeness of disclosures, so as to avoid future disputes, demands, and penalties.

1. Reconciliation of GST Returns with Books

The primary concern is whether the outward supplies, tax liabilities, and ITC claimed in GST returns correctly reflect the books of accounts.

  • GSTR-1 vs Sales Register
    Outward supplies declared under Section 37 must match revenue as per books. Any mismatch may trigger notices.
  • GSTR-3B vs Books of Accounts
    As per Section 39, tax liability discharged must be reconciled with financial records.
  • GSTR-2B vs ITC Register
    ITC eligibility must be verified in line with Section 16(2)—credit is allowed only when:
    • Tax invoice is available
    • Goods/services received
    • Tax is paid to Government
    • Return is furnished

Further, blocked credits under Section 17(5) must be excluded.

2. Time Limit for Availing ITC

A critical legal checkpoint is whether ITC has been claimed within the prescribed time.

  • As per Section 16(4), ITC for FY 2024-25 cannot be claimed after:
    • 30th November 2025 (post amendment), or
    • Date of filing annual return, whichever is earlier.

Thus, March-end review helps identify missed credits before statutory cut-off.

3. Review of Advances and Time of Supply

Businesses must ensure correct taxability of advances:

  • Time of supply provisions under Section 12 (goods) and Section 13 (services) must be applied.
  • Incorrect treatment may lead to either excess or short payment of tax.

4. Verification of Reverse Charge Mechanism (RCM)

The issue arises whether all RCM liabilities are discharged.

  • Under Section 9(3), specified services (e.g., GTA, legal services) require tax payment by recipient
  • Under Section 9(4), supplies from unregistered persons (where applicable) may attract RCM.

Non-compliance may lead to denial of ITC and interest liability.

5. Reversal of Ineligible ITC

Where ITC has been wrongly availed:

  • Reversal is required under Section 17 read with Rule 42 & Rule 43 (apportionment for exempt and taxable supplies).
  • Interest under Section 50 may apply on wrongful availment/utilization.

6. Matching of E-way Bills and Invoices

Since GST is a document-driven law, consistency between:

  • Tax invoices (Section 31)
  • Returns (GSTR-1, 3B)
  • E-way bills

is crucial to avoid litigation and scrutiny.

7. Review of Exempt and Non-GST Supplies

Businesses must ensure correct classification:

  • Exempt supplies as per Section 11 and relevant notifications
  • Non-taxable supplies and NIL-rated supplies must be properly disclosed

Incorrect classification impacts ITC reversals and compliance.

8. Classification and Rate Accuracy

Misclassification leads to tax disputes:

  • Classification must follow Scheme of Classification of Services, where specific description prevails over general
  • Rates must be verified with relevant notifications issued under Section 9

Conclusion

The year-end GST review is not merely procedural but a statutory necessity to ensure compliance with provisions relating to returns, ITC, classification, and tax payment. A proactive reconciliation exercise helps mitigate risks of:

  • Demand notices
  • Interest and penalties
  • Litigation

Businesses should undertake a comprehensive compliance audit before 31st March 2026 to ensure alignment with GST law.