Interest Under Section 50 Accrues From Original Pre-GST Clearance Date for Price Escalations, But Penalty Is Inapplicable for Bona Fide Transitional Compliance

By | October 15, 2026
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Interest Under Section 50 Accrues From Original Pre-GST Clearance Date for Price Escalations, But Penalty Is Inapplicable for Bona Fide Transitional Compliance

Issue

  1. Whether Section 50 interest on differential GST arising from post-implementation price escalation debit notes accrues from the date of original pre-GST goods clearance or from the month of debit note issuance.
  2. Whether penalty under Section 122 is leviable when an assessee voluntarily pays differential GST on post-GST price escalation debit notes issued under transitional provisions.

Facts

  • Pre-GST Goods Clearance: The assessee, a manufacturer, cleared goods between April 2017 and June 2017 under the erstwhile excise/VAT regime under contracts containing price-escalation clauses.
  • Post-GST Price Revision: Subsequent to the implementation of GST, upward price revisions were finalized.
  • Issuance of Debit Notes & Voluntary Payment: In September and October 2018, the assessee issued supplementary invoices/debit notes under Section 142(2)(a) (transitional provisions) and voluntarily paid the differential GST.
  • Adjudication Order (OIO): The Assessing Officer (AO) appropriated the paid tax and levied Section 50 interest along with penalties under Section 122.
  • First Appellate Order: The Commissioner (Appeals) dropped the penalty and set aside the interest demand, holding that no interest liability arose prior to the month of debit note issuance.
  • Revenue’s Appeal: The Revenue filed an appeal challenging both the deletion of interest and the dropping of penalty.

Decision

On Interest under Section 50

  • Based on Supreme Court precedents, a finalized price escalation relates back to the original period of goods removal/clearance, meaning tax ought to have been paid at that original time.
  • The transitional provisions under Section 142 serve as a procedural mechanism for reporting price revisions via debit notes but do not shift the economic accrual or create a new charge.
  • Section 50 interest attaches automatically from the original clearance period (April–June 2017) on the differential tax liability, not from the date of debit note issuance.
  • The order of the Commissioner (Appeals) regarding interest was set aside, and the interest demand was upheld. (In favour of revenue)

On Penalty under Section 122

  • The differential tax liability arose out of a contractual price escalation during a period of complex legislative transition, without any element of fraud, suppression, willful misstatement, or intent to evade tax.
  • The assessee acted in bona fide belief and discharged the differential tax voluntarily upon price finalization.
  • Penalties under Section 122 target deliberate or contumacious conduct and cannot be invoked for bona fide compliance in transitional matters.
  • The dropping of the penalty by the Commissioner (Appeals) was held legally justified and upheld. (In favour of assessee)

Key Takeaways

  • Retrospective Tax Accrual for Price Escalations: Tax on price variations relates back to the date of original supply, making interest under Section 50 payable from the original date of removal.
  • Transitional Provisions Are Procedural: Section 142(2)(a) governs the reporting mechanism for supplementary invoices/debit notes post-GST but does not reset the date of interest accrual.
  • Protection Against Penalties: Penalty under Section 122 cannot be imposed where taxpayers voluntarily report and pay differential liabilities arising from contractual adjustments under a bona fide interpretation of law.
GOODS AND SERVICE TAX APPELLATE TRIBUNAL , BENGALURU BENCH
Gopinath TM
v.
Mukand Ltd.
Srikanth Venkatraman, Judicial Member
and Sudha Koka, Technical Member
APL No. 258 (BUR) of 2026
OCTOBER  7, 2026
Krishna Singh, Balkeshwar Prasad, Rahul, K K Varma and Prabhat Kumar, AC AR CGST for the Appellant. Gowrishankar for the Respondent.
ORDER
Sudha Koka, Technical Member. –Introduction: The Constitutional and Statutory Architecture of Transitional Tax Liability
“Taxes are the price we pay for a civilized society, and the rule of law demands that fiscal statutes be interpreted not through the myopic prism of artificial legal fictions, but through the enduring reality of economic transactions and statutory intent.”
This appeal concerns the legal transition from the erstwhile indirect tax regime to the Goods and Services Tax (GST) introduced on July 1, 2017. The central question is whether a retrospective upward price revision under a pre-existing contract, treated as a “deemed outward supply” via Section 142(2)(a) of the Central Goods and Services Tax Act, 2017, extinguishes historical interest liability on delayed tax payments, or whether the underlying economic reality requires the enhanced value to relate back to the original date of clearance.
The Respondent, M/s. Mukand Limited, cleared goods between April 2017 and June 2017, subsequently raising debit notes on September 29, 2018, and October 15, 2018, to discharge differential tax of Rs. 54,44,190/-. While the original adjudicating authority (OIO) correctly enforced statutory interest under Section 50, the First Appellate Authority (OIA) set aside the demand by misinterpreting the transitional provisions.
Applying the binding precedent of the Hon’ble Supreme Court in Steel Authority of India Ltd. v. CCE   (SC), alongside CCE v. SKF India Ltd. [2009] 239 ELT 385 (SC). and CCE v. International Auto Ltd [2010] 250 ELT 3 (SC)., this order evaluates the statutory matrix, restores the enforceability of interest, and addresses the issue of penalty.
11. Chronology of Events (from OIO to OIA)
Date / Period Event / Milestone
April 2017 – June 2017 The Respondent (M/s. Mukand Limited) cleared goods under the erstwhile pre-GST regime, with transaction values subsequently subject to upward price revisions pursuant to contractual escalation clauses.
01.07.2017 The Goods and Services Tax (GST) regime came into effect, bringing Section 142 of the CGST Act, 2017 into operation for transitional price adjustments.
29.09.2018 & 15.10.2018 The Respondent issued debit notes and supplementary invoices under Section 142(2)(a) of the CGST Act, 2017, declaring a differential taxable value and raising a differential tax liability.
September & October 2018 The Respondent voluntarily discharged the differential tax amounting to Rs. 54,44,190/- via debit notes (Nos. 9051005594, 9051005595, 9051005614, and 9051005615).
Order-in-Original (OIO) No.: BEL/GST/000/DIVH/ASC/VM/05/2021-22 dt. 28.3.2022 passed by the Assistant Commissioner, Hosapete Division
Order-inOriginal (OIO) DT 28.3.2022 The Adjudicating Authority passed the OIO, confirming the tax appropriation of Rs. 54,44,190/- and demanding interest of Rs. 13,85,623/- along with penalties under Section 122.
Order-in-Appeal (OIA) No.: BGM-JJ-ADC-38-2023-24-GST Dated 30.06.2023 passed by the Additional Commissioner (Appeals), Belagavi.
Order-in-Appeal (OIA) DT p. 30.6.2023 Aggrieved by the OIO, the Respondent carried the matter in appeal. The First Appellate Authority passed the OIA, setting aside the OIO and accepting the assessee’s contention that no interest is sustainable.
Current Proceedings Aggrieved by the said OIA which set aside the valid interest demand of the OIO, the Revenue (Appellant) is presently in appeal before this appellate forum.

 

III. Grounds of Appeal of the Appellant (Revenue) Against the OIA
The Appellant (Revenue) challenges the Order-in-Appeal (OIA) on the following core grounds:
• Error in Setting Aside OIO: The OIA erred in setting aside the Order-in-Original (OIO) by holding that interest under Section 50 of the CGST Act, 2017 (the Act) is not recoverable on differential tax paid via supplementary invoices.
• Flawed Interpretation of Section 39(7): The ADC (Appeals) erroneously held that the due date for discharging GST on supplementary invoices is the 20th of the month following their issuance, rather than relating back to the month of the original invoices. Section 39(7) of the Act simply mandates paying tax due; whether tax is “due” depends on the Time of Supply (Section 12 of the Act), not the date a debit note is raised.
• Legislative Intent and Section 34(4): While Section 34(4) allows details of a debit note to be declared in the return of the month of its issuance, it is purely reporting machinery. As noted by the Law Committee during the 38th GST Council Meeting, ITC on debit notes is linked to the condition that interest is paid when tax liability is discharged.
• Erroneous Dropping of Penalty: The ADC (Appeals) dropped penalties under Section 122(2)(a) of the Act solely because no tax was deemed due from the taxpayer, which is legally flawed since tax was due from the date of actual supplies.
IV. Respondent’s Defense Anchored on Section 142(2)(a) of the CGST Act, 2017
In defense of the OIA, the Respondent counter-argues as follows:
• Compliance with Sections 39(7) and 34(4): Declaring debit notes in GSTR-1 and paying GST in GSTR-3B for the month of issuance (Sept/Oct 2018) constitutes timely payment under Section 39(7).
• Inapplicability of Section 12: Section 12 applies only to supplies made under the GST Act. For pre-GST removals, Section 142(2)(a) treats supplementary invoices as “deemed outward supplies made under this Act,” prescribing to a 30-day window from price revision. Compliance with this framework eliminates any delay or Section 50 interest.
• Rejection of Provisional Assessment / Steel Authority Relevance: The Department rejected their pre-GST request for provisional assessment, forcing clearances under normal self-assessment. Hence, the Respondent claims Steel Authority of India Ltd. (which dealt with provisional assessment finalization) does not apply to post-GST debit notes under Section 34(4).
• Immunity from Penalty: Relying on case law (CCE v. H.M.M. Ltd., Godrej Soaps, Essar Oil, etc.), the Respondent argues that if the primary demand (interest) fails, penalties under Section 122 must automatically collapse.
V. Our Analysis and Findings
1. Examination of Appellant Grounds, Respondent’s Counter, and Case Law via the Apex Court’s Ration inSteel Authority of India Ltd. (Supra).
A rigorous and logical synthesis of the rival submissions reveals the legal fallacy in the Respondent’s defense when measured against the binding ratio of the Larger Bench of Hon’ble Supreme Court in Steel Authority of India Ltd. (Supra) which upheld Apex Court’s Division Bench judgments in SKF India Ltd. (Supra); and International Auto Ltd (Supra).
2. The Core Mandate of Steel Authority Ratio (Para 63 of Steel Authority case):
The Supreme Court explicitly held in Paragraph 63 of Steel Authority Case that when a price escalation has retrospective operation, the later-discovered or finalized price becomes the true value of the goods even at the time of original removal. The Court observed that interpreting statutory rules to mean that duty/tax “ought to have been paid” only when prices are finalized or supplementary invoices are raised does “violence to the provisions of the Act.”
3. Harmonizing Section 142(2)(a) of CGST Act 2017 with the Supreme Court’s Ration in Steel Authority of India Ltd. (Supra) Case:
Taxpayers frequently misinterpret Section 142(2)(a)—which mandates that a supplementary invoice or debit note be “deemed to have been issued in respect of an outward supply made under this Act”—as creating a fresh charging event or shifting the liability date to the post GST era. However, harmonizing this provision with the binding ratio of Steel Authority of India, the deeming fiction under Section 142(2)(a) serves a purely procedural and administrative purpose. It provides the statutory gateway and mechanism for a registered taxpayer to report the differential transaction, issue a GST-compliant debit note, and discharge tax through the electronic portal. It does not rewrite economic history or alter the original time when the value accrued.
4. Inescapable Incidence of Interest:
Therefore, while Section 142(2)(a) bridges the procedural transition by allowing the payment of differential tax of Rs. 54,44,190/- via debit notes issued on September 29, 2018 and October 15, 2018, carries forward the historical liability for interest. Because the differential tax relates back to the original clearance period, the mandatory interest under Section 50 attaches automatically.
5. Dismantling the Respondent’s Section 39(7) and Section 34(4) Fallacy:
Respondent’s Claim: The due date shifts to the 20th of the month following the issuance of the debit note.
Our Finding: Just as Rule 8 of Central Excise could not shift the accrual date, Section 39(7) and Section 34(4) are purely procedural and administrative reporting mechanisms for the electronic portal. They provide the gateway to report transactions and file GSTR-3B, but they do not rewrite economic history or alter the original time when the value accrued.
6. Untenable Section 12 / Section 142(2)(a) “Fresh Tax Point” Theory:
Respondent’s Claim: Section 142(2)(a) creates a “deemed outward supply under this Act,” making the liability born fresh on the date of the supplementary invoice.
Our Finding: The deeming fiction in Section 142(2)(a) is merely a transitional bridge allowing taxpayers to issue debit notes and discharge tax post-July 1, 2017. It is not a legal time-machine that erases the time-value of money enjoyed by the assessee during the interim legacy-to-GST period. The enhanced value relates back to the original clearance period.
7. Neutralizing the “Denied Provisional Assessment” Distinction
Respondent’s Claim: Steel Authority only applies to formal provisional assessments under the old regime; since their request was denied, the ratio is inapplicable to post-GST debit notes.
Our Finding: This is a distinction without a difference. The Supreme Court’s ratio is grounded in the universal economic reality of price variation clauses, not the administrative label of “provisional assessment.” Whether a price is subject to a contractual escalation clause or formal provisional assessment, an upward price revision is retrospective, and the tax was legally due from inception.
VI. Penalty under Section 122: and Bona fide Transition
While the principal tax appropriation and the accompanying statutory interest are fully sustainable under the law, the imposition of penalty under Section 122 of the CGST Act, 2017 requires careful judicial scrutiny:
Nature of the Default: The differential tax liability did not arise from any suppression of facts, fraud, will ful misstatement, or evasion of tax. Rather, it arose purely out of a contractual price escalation clause occurring during a complex legislative transition from the Central Excise regime to the GST regime.
Bona fide Interpretation of Transitional Law: The applicability of Section 142(2)(a) and the legal effect of supplementary invoices on pre-existing contracts involved intricate questions of statutory interpretation. The Respondent acted under a bona fide belief regarding the transitional mechanism.
Inapplicability of Penalty: Penalties under fiscal statutes are designed to punish deliberate infractions or contumacious conduct. In the absence of suppression or deliberate noncompliance —and given that the differential tax was voluntarily discharged upon finalization of prices—the imposition of penalty under Section 122 is unwarranted and legally unjustified. Accordingly, the quashing of penalty in OIA is legally sustainable.
VII. Conclusions
• Setting Aside the OIA: The findings and conclusions in the Order-in-Appeal (OIA) which set aside the Order-in-Original (OIO) regarding the non-sustainability of interest are hereby found to be legally flawed and are liable to be set aside.
• Restoration of Interest Demand: In light of the grounds raised by the Appellant against the OIA, the comprehensive rebuttal of the Respondent’s counters, and the binding ratio of the Hon’ble Supreme Court in Steel Authority of India Ltd (Supra) (specifically paragraph 63, reaffirming SKF India Ltd. (Supra) and International Auto Ltd (Supra), the demand for interest amounting to Rs. 13,85,623/- under Section 50 of the CGST Act, 2017 as originally determined in the OIO, is restored and upheld as valid, mandatory, and fully enforceable.
• Setting Aside of Penalty: The penalty imposed upon the Respondent under Section 122 of the CGST Act, 2017 is liable to be set aside in view of the bona fide nature of the transitional dispute and the absence of any contumacious conduct or suppression.
Accordingly, we pass the following order:
ORDER
1. The order in OIA with respect to non-sustainability of demand of interest is set side.
2. Demand for interest amounting to Rs. 13,85,623/- under Section 50 of the CGST Act, 2017, as originally determined in OIO is upheld.
3. The ruling in OIA with regard to quashing of the penalty imposed under Sec 122 of the Act is upheld.
4. The appeal filed by the Appellant (Revenue) against the OIA is accordingly partly allowed to the extent of upholding the interest demand, while confirming the relief granted regarding the penalty.