
Aadrikaa Legal Services (ALS)- Law I Litigation I Arbitration
Date: 22.10.2026
Gujarat HC: Unjust Enrichment Principle Not Applicable to Pre-2006 Provisional Assessment Refunds

This Short Article has been prepared & written by Advocate Ravi Shekhar Jha-Delhi High Court, New Delhi. The views expressed are based on his interpretation of the law. He can be reached at his email id intelconsul@gmail.com .
The Gujarat High Court has dismissed the Revenueβs appeal and confirmed that the doctrine of unjust enrichment does not apply to refunds arising from the finalisation of provisional customs assessments completed before 13 July 2006.
Case overview
In Commissioner of Customs, Ahmedabad v. ArcelorMittal Nippon Steel India Private Limited (formerly Essar Steel Ltd.), the Court considered whether an importer seeking a refund after finalisation of a provisional assessment had to prove that it had not passed the duty burden on to another person.
The appeal, brought under Section 130 of the Customs Act, 1962, challenged a 2011 CESTAT order that had ruled in favour of the assessee. The Gujarat High Court, in its judgment dated 23 September 2026, upheld that outcome.
The legal issue
The central question was:
Does unjust enrichment apply to a refund resulting from finalisation of a provisional assessment when that assessment was pending before the 2006 amendment to Section 18 of the Customs Act?
The Court answered this question in favour of the assessee and against the Revenue.
Background: provisional assessments and refunds
A provisional assessment is used when customs duty cannot be finally determined at the time goods are cleared, such as when relevant information or documentation is unavailable or requires verification. The importer pays duty provisionally, subject to later adjustment when the assessment is finalised.
If the provisional duty paid exceeds the finally assessed duty, a refund becomes due. The dispute in this case was whether such a refund, for the pre-amendment period, was subject to the doctrine of unjust enrichment.
Under that doctrine, a claimant may be denied direct receipt of a refund where the duty incidence has already been passed on to customers or another party. The objective is to prevent a windfall to a person who did not ultimately bear the duty burden.
Why the Court rejected the Revenueβs position
The Court found that the issue was no longer open to debate because the Supreme Court had settled it in Commissioner of Customs v. Hindustan Zinc Limited in 2023.
The Gujarat High Court noted that, before the amendment effective from 13 July 2006, Section 18 did not incorporate the unjust-enrichment requirements contained in Section 27 of the Customs Act. Consequently, those requirements could not be imported into refunds that arose directly from finalisation of a provisional assessment under the earlier legal framework.
The Court also relied on the established principle from Allied Photographics India Ltd. and its own earlier ruling in Commissioner of Customs v. Hindalco Industries Ltd.: refunds resulting from the adjustment of provisional duty upon final assessment are distinct from independent refund claims governed by the general refund provisions.
Supreme Court guidance followed by the High Court
The Supreme Court in Hindustan Zinc reaffirmed that refunds flowing directly from finalisation of a provisional assessment are not governed by the general refund provisions applicable to other claims. It endorsed the reasoning in Allied Photographics and clarified that a later decision in Sahakari Khand Udyog Mandal Ltd. should be confined to its own facts.
The Supreme Courtβs analysis draws an important distinction:
- Automatic adjustment on final assessment: Where provisional duty is adjusted against final duty and an excess emerges, the resulting refund follows from the provisional-assessment mechanism itself.
- Independent or appellate refund claim: Where a refund is claimed separately after the assessment process, including after an appeal or other challenge, the general refund provisions may apply.
For the period before 13 July 2006, the first category was not subject to unjust enrichment under Section 18.
Application to ArcelorMittal Nippon Steel India
In this matter, the provisional assessment was finalised before 13 July 2006, and the assessee had also submitted letters claiming the relevant amounts before that date. The appellate authority had ruled for the assessee, referring to a Chartered Accountantβs certificate and concluding that unjust enrichment did not arise in relation to the refund generated by finalisation.
CESTAT upheld that decision. The Gujarat High Court found no error in CESTATβs approach, particularly in light of the Supreme Courtβs later confirmation of the governing legal position.
Practical significance
The decision provides clarity for customs disputes involving older provisional assessments. Its key implication is that the applicable legal regime depends on when the provisional assessment was finalised and when the refund entitlement arose.
For refunds directly arising from finalisation of a provisional assessment before 13 July 2006, customs authorities cannot require the importer to satisfy the unjust-enrichment test merely by reading Section 27 requirements into the unamended Section 18 framework.
The ruling also reinforces the need to distinguish between a refund that is a direct statutory consequence of final assessment and a separate refund claim pursued through other proceedings. That distinction can determine whether unjust enrichment is relevant.
Conclusion
By dismissing the Revenueβs appeal, the Gujarat High Court confirmed that pre-13 July 2006 provisional-assessment refunds are not subject to unjust enrichment when they arise directly upon finalisation of the assessment. The judgment aligns the Courtβs position with the Supreme Courtβs decisions in Allied Photographics and Hindustan Zinc, offering a settled rule for legacy customs refund matters.
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Source: Gujarat High Court
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