TaxTMI 
TaxTMI 
15 Oct 2026 
A Turnover Correction Does Not Necessarily Defeat the Refund
Credit notes can affect the refund amount available to an exporter because they may change the turnover used in the refund formula. Ignoring a valid reduction can understate the maximum refund. Deducting a credit note that does not qualify for GST adjustment can overstate it. However, identifying an error in turnover does not automatically establish that the refund already sanctioned was excessive. The corrected calculation must still be compared with the amount actually claimed.
These principles arose in The Commissioner of CGST & Central Excise, Siliguri Commissionerate, Darjeeling Versus M/s. Rajshahi Banijya Private Limited. - 2026 (10) TMI 624 - GSTAT KOLKATA. The Goods and Services Tax Appellate Tribunal, Kolkata Bench, comprising Hon'ble Shri Sunil Kumar Singh, Member (Judicial), and Hon'ble Shri Bijoy Kumar Kar, Member (Technical), decided Appeal No. APL/11/KLK/2026. The dispute concerned deducting credit notes from the adjusted total turnover when calculating the refund of accumulated ITC on exports without payment of tax.
The taxpayer supplied tea domestically and through exports. It claimed Rs.2,79,084 for April-June 2021 under Section 54(3)(i) of the CGST Act, 2017. The refund was sanctioned on 17.11.2021. After review, the Department challenged the deduction of credit notes totalling Rs. 12,04,575 from the adjusted total turnover. The First Appellate Authority sustained the refund, leading to the departmental appeal before the Tribunal.
Credit Notes Matter Because Turnover Determines the Refund Ceiling
Rule 89(4) of the CGST Rules, 2017 links the maximum refund to three principal figures: zero-rated turnover, Net ITC and adjusted total turnover. Broadly, the formula multiplies zero-rated turnover by Net ITC and divides the result by adjusted total turnover. Net ITC refers to the credit qualifying under the formula, not every credit appearing in the taxpayer's records.
Adjusted total turnover is the denominator. If it is overstated, the calculated maximum refund is smaller. If it is understated, the maximum is larger, assuming the other figures remain unchanged. A credit note affecting domestic taxable supplies may therefore influence the export refund calculation even though it does not relate to an export invoice.
For example, assume zero-rated turnover of Rs.10 lakh, Net ITC of Rs.2 lakh and adjusted total turnover of Rs.1 crore. The formula yields a maximum refund of Rs. 20,000. If valid credit notes relating to domestic supplies reduce adjusted total turnover by Rs.10 lakh, the denominator becomes Rs.90 lakh and the maximum refund becomes approximately Rs.22,222. This illustration assumes the other figures remain unchanged. A credit note affecting export turnover may also require a corresponding examination of the numerator. The purpose is an accurate calculation, not a selective reduction of the denominator.
A Valid Credit Note Reflects a Change in the Supply Value
Section 34(1) of the CGST Act, 2017 permits credit notes in specified circumstances, including where the taxable value or tax charged exceeds the amount properly payable, goods are returned, or goods or services are found to be deficient, or with effect from a date to be notified, where a post-supply discount referred to in Section 15(3)(b) is given. The Finance Act, 2026 inserted the provision for post-supply discount. A qualifying credit note is therefore more than an accounting entry. It records an adjustment that may affect the taxable value or tax associated with the original supply.
The Tribunal accepted that credit notes for returned goods must be considered when determining turnover for refund purposes. Retaining the original value despite a valid adjustment would disconnect the calculation from the corrected supplies. The invoice value cannot be treated as permanently unchanged merely because it was initially reported. At the same time, a document described as a credit note does not automatically qualify for deduction. The Department must examine its legal basis, supporting records, and compliance with the applicable conditions.
The Records Must Establish Which Invoices the Credit Notes Concern
The Department's sole ground was that the credit notes had been wrongly excluded from adjusted total turnover. It questioned their connection with the relevant sales invoices and suggested that they related to unspecified earlier periods. The taxpayer responded that it had properly disclosed the notes and that ignoring them would artificially increase turnover. It initially claimed a division of Rs. 2,00,558 relating to earlier periods and Rs. 10,04,017 relating to April-June 2021.
The Tribunal did not accept that division merely because it appeared in the taxpayer's submissions. It examined the Chartered Accountant's certificate, GSTR-1 statements and voucher register. Those records supported a different division: Rs. 11,03,065 related to invoices for April-June 2021, while Rs. 1,01,510 related to the financial year 2019-20. The Department's broad suggestion that it could not identify the invoice periods was therefore not accepted. Equally, the taxpayer's own explanation was corrected through document verification. Neither side's assertion replaced examination of the underlying entries.
An Earlier Invoice Is Not Automatically Disqualified, but the Deadline Still Applies
The original invoice date and the credit note date serve different purposes. An invoice may belong to an earlier period while a credit note is issued later because goods are returned or another qualifying adjustment becomes necessary. The mere fact that the invoice predates the refund quarter does not, by itself, answer whether the adjustment is permissible. The relevant statutory conditions, including the time limit, must be checked.
For illustration, a credit note issued in June 2021 against a March 2021 invoice would require examination against the deadline applicable to financial year 2020-21. It would not become impermissible merely because the invoice preceded the April-June refund quarter. In the present case, however, three credit notes dated 16.06.2021, for Rs.57,220 Rs.28,610 and Rs.15,680, were related to invoices of October 2019 and March 2020. The Tribunal held that these notes, totalling Rs. 1,01,510, exceeded the applicable limit under Section 34(2) of the CGST Act, 2017.
The historical version of the provision matters. The Tribunal applied the earlier September-based limit to financial year 2019-20. Although the reported order reproduced the later wording referring to 30 November, it also recorded that the substitution took effect from 01.10.2022. The later amendment should not be treated as automatically reopening an expired adjustment period. The applicable deadline must be determined with reference to the relevant financial year and law in force.
A Commercial Credit Note Can Reduce the Amount Payable Without Reducing GST
A business may agree to reduce the amount its customer must pay without being entitled to reduce the GST originally charged. A financial or commercial credit note can record that agreement. Reducing the customer's outstanding balance and reducing GST liability are two different adjustments. The Tribunal's decision concerned whether the disputed credit notes could reduce adjusted total turnover for the refund calculation. It did not prohibit businesses from issuing commercial credit notes merely because the deadline for a GST adjustment had expired.
For example, suppose a supplier issues an invoice for goods worth Rs. 1,00,000 plus GST of Rs. 18,000. Later, it agrees to give the customer a commercial discount of Rs.10,000. If the conditions for reducing the taxable value are not satisfied, the supplier may issue a commercial credit note reducing the amount payable from Rs. 1,18,000 to Rs. 1,08,000. However, the original GST liability of Rs.18,000 does not reduce merely because the customer now pays less. The commercial credit note records the financial concession; it does not automatically qualify as a GST adjustment.
CBIC Circular No.92/11/2019-GST dated 07.03.2019 recognises this distinction. Accordingly, a credit note must be examined to determine whether it merely adjusts the amount payable between the parties or also qualifies for adjustment under Section 34 of the CGST Act, 2017. Only the latter can receive the corresponding GST treatment, subject to the applicable conditions. The circular was not cited in the judgment; it is referred to here only to clarify that commercial credit notes and GST-adjusting credit notes are not interchangeable.
The Calculation Changed, but the Refund Remained Admissible
The Tribunal did not permit the deduction of the three belated credit notes totalling Rs. 1,01,510. It therefore added that amount back to the adjusted total turnover, increasing the figure from Rs. 5,94,51,193 to Rs. 5,95,52,703. With zero-rated turnover of Rs. 34,12,395 and Net ITC of Rs. 59,68,865, the revised maximum refund under Rule 89(4) of the CGST Rules, 2017 was Rs. 34,12,395 x Rs. 59,68,865 / Rs. 5,95,52,703 = Rs. 3,42,018, as recorded in the order.
However, the taxpayer had claimed and received only Rs.2,79,084. That amount remained below the revised maximum of Rs.3,42,018. The correction therefore did not show that the taxpayer had received an excessive refund. The refund calculation required correction, but the amount already refunded did not require reduction. This explains why the Revenue's appeal failed even though deduction of some credit notes was rejected.
The result would need separate examination if the corrected maximum fell below the refund sanctioned. For example, if a taxpayer had received a refund of Rs.3,50,000, but the corrected calculation established entitlement to only Rs.3,42,018, the excess of Rs.7,982 would have to be repaid, together with applicable interest under Section 50 of the CGST Act, 2017, subject to the applicable statutory requirements. Here, no such excess arose. An error in one part of the calculation does not automatically make the entire refund wrong; its actual effect must first be worked out.
Rejection of Some Credit Notes Did Not Defeat the Refund
The Department's appeal was dismissed, and the sanctioned refund of Rs.2,79,084 remained unchanged. Each party had to bear its own costs. The revised calculation showed a maximum permissible refund of Rs.3,42,018, but the taxpayer had claimed only Rs.2,79,084. The decision therefore preserved the refund already sanctioned; it did not grant the difference as an additional refund or separately award interest.
However, the taxpayer did not succeed on every point. The Tribunal rejected the deduction of three belated credit notes totalling Rs.1,01,510 and added that amount back to the adjusted total turnover. This correction reduced the refund ceiling, but the revised ceiling still exceeded the amount claimed. The refund remained valid despite the correction, not because every credit note was accepted.
The practical lesson is that an incorrect credit-note deduction does not automatically invalidate the whole refund. First, correct the calculation, then compare the revised permissible amount with the refund claimed or sanctioned. If the refund remains within that limit, the correction may not require any reduction. If the refund already paid exceeds the amount lawfully admissible after recalculation, the excess must be repaid, together with applicable interest under Section 50 of the CGST Act, 2017, subject to the applicable statutory requirements. Merely claiming an excessive amount is different from actually receiving an excess refund. In the present case, no repayment arose because the sanctioned refund remained below the revised permissible limit. The financial effect of the error must be calculated, not assumed.
Check the Credit Notes Before Deciding Their Effect on the Refund
Taxpayers should keep a clear record showing which invoice each credit note relates to, why it was issued, the financial year concerned and how it was reported in GST returns. They should also distinguish credit notes that qualify for a GST adjustment from commercial credit notes that merely reduce the amount payable by the customer. A certificate from a Chartered Accountant may help explain the reconciliation, but the invoices, credit notes, returns and accounting records must support the figures.
The Department must also complete the calculation. Finding that a credit-note deduction is inadmissible does not, by itself, establish that the taxpayer received an excess refund. The Department must correct the relevant figures, recalculate the permissible refund under Rule 89(4) of the CGST Rules, 2017, and compare the result with the amount claimed or sanctioned. An error in the calculation does not necessarily mean that the refund was excessive.
The practical approach is straightforward: verify the documents, check whether the credit notes meet the applicable conditions and time limits, and calculate their actual effect. Recognise valid deductions, and correct inadmissible deductions. Whether that correction reduces the refund depends on the revised figures, not merely on the existence of an error.
Author's Note: The reported order contains conflicting dates for the First Appellate Authority's order. That date has therefore been omitted. This discussion uses the aggregate credit-note amounts and revised refund calculation expressly adopted by the Tribunal.
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