A Comprehensive Analysis of GST Amendments under the Finance Act, 2026

The Finance Act, 2026 Introduces Important Changes Across GST Law

The Finance Act, 2026 has introduced several important amendments to the Central Goods and Services Tax Act, 2017 and the Integrated Goods and Services Tax Act, 2017. These amendments cover post-supply discounts, issuance of credit notes, provisional refunds, the appellate mechanism for advance rulings and the place of supply of intermediary services. The changes aim to simplify certain compliance requirements, improve refund procedures, and address key legal and practical difficulties taxpayers face.

The five amending sections have come into force on different dates. Sections 153 to 155 have been brought into force with effect from 01.11.2026, vide Notification No. 03/2026-Central Tax dated 26.10.2026. Section 156 became effective from 01.04.2026, while Section 157 came into force on 30.03.2026. These effective dates matter because the amended provisions must be applied to the period to which the relevant transactions or proceedings relate.

This article provides a comprehensive analysis of all five amending sections, explaining the earlier legal position, the changes introduced by the Finance Act, 2026 and their practical implications for taxpayers, businesses and GST professionals.

1. Post-Supply Discounts No Longer Require a Pre-Existing Agreement

Section 153 of the Finance Act, 2026 has substituted Section 15(3)(b) of the CGST Act with effect from 01.11.2026. This amendment substantially changes the conditions for excluding post-supply discounts from the taxable value of a supply.

Under the earlier (existing) provision, a discount granted after supply could be excluded from the taxable value only if two conditions were met cumulatively. First, the discount had to be established under an agreement entered into before or at the time of supply and specifically linked to the relevant invoices. Second, the recipient was required to reverse the input tax credit attributable to the discount.

These conditions frequently created difficulties in commercial transactions. Businesses often announce turnover discounts, performance incentives or special promotional discounts after examining actual sales during a particular period. Where such discounts were not covered by an earlier agreement, businesses could not meet the statutory requirements to reduce the taxable value, even if the discount was commercially genuine.

The amended Section 15(3)(b) removes the requirement of a pre-existing agreement and specific invoice-level linkage as statutory conditions for the deduction. Instead, the supplier must issue a credit note under Section 34, and the recipient must reverse the corresponding input tax credit attributable to the discount.

For example, suppose a manufacturer supplies goods worth Rs. 50 lakh to a distributor and later grants a Rs. 2 lakh discount after reviewing the distributor's sales performance. Under the earlier provision, the absence of a qualifying prior agreement could prevent the discount from reducing the taxable value. However, under the amended provision, such a reduction can be considered through the statutory credit note mechanism, subject to the prescribed conditions.

The amendment provides greater commercial flexibility. However, it does not mean that every financial adjustment or commercial incentive automatically qualifies for reduction of taxable value. The discount must relate to the taxable supply, the prescribed credit note requirements must be satisfied, and the recipient must make the corresponding ITC reversal.

2. Credit Notes Become the Statutory Mechanism for Post-Supply Discounts

Section 154 of the Finance Act, 2026 amends Section 34(1) of the CGST Act, effective from 01.11.2026. The amendment expressly includes post-supply discounts covered by Section 15(3)(b) among the circumstances in which a supplier may issue a GST credit note.

Before this amendment, Section 34(1) permitted credit notes in specified situations, including where the taxable value or tax charged exceeded the amount payable, goods were returned, or the goods or services supplied were found deficient. The amended provision expressly adds a further situation where a discount referred to in Section 15(3)(b) is granted.

The amendments to Sections 15(3)(b) and 34(1) must be read together. Section 15 sets out the conditions for excluding a post-supply discount from the taxable value, while Section 34 provides the mechanism by which the supplier can give effect to that reduction. The corresponding ITC reversal by the recipient ensures that the tax adjustment is reflected on both sides of the transaction.

Consider a supplier who issues an invoice for Rs. 10 lakh plus GST at 18%, amounting to Rs. 1.80 lakh. Subsequently, the supplier grants a discount of Rs. 1 lakh. Where the amended statutory conditions are satisfied, the supplier may issue a GST credit note reflecting the discount and the corresponding tax adjustment of Rs. 18,000. The recipient must reverse the related ITC of Rs. 18,000.

The supplier must also comply with the applicable requirements of Section 34, including the statutory time limit for reporting credit notes. The amendment simplifies the eligibility conditions for post-supply discounts but does not dispense with credit note compliance.

Businesses should therefore review their discount policies, accounting systems and documentation procedures. Proper coordination between suppliers and recipients will help ensure the credit note and corresponding ITC reversal are correctly reflected in their GST records.

3. Provisional Refunds Are Extended to Inverted Duty Structure Cases

Section 155 of the Finance Act, 2026 amends Section 54(6) of the CGST Act, effective from 01.11.2026. This amendment extends the facility of provisional refunds to eligible claims arising from an inverted duty structure.

An inverted duty structure generally arises when the GST rate on inputs exceeds the GST rate on outward supplies, resulting in an accumulation of unutilised input tax credit. Section 54(3), subject to its conditions and restrictions, permits refunds of eligible accumulated ITC in such circumstances.

Before the amendment, Section 54(6) expressly provided for provisional refunds of up to 90% of the amount claimed in cases involving zero-rated supplies. Claims arising from an inverted duty structure were not expressly included within this statutory facility.

The amended provision brings eligible inverted duty structure refund claims within the scope of provisional refunds of up to 90%. The proper officer may grant such refunds in the prescribed manner, subject to applicable conditions, limitations, and safeguards, and then settle them finally after verification.

For example, suppose a manufacturer has accumulated unutilised ITC of Rs. 25 lakh due to an inverted duty structure. After applying the prescribed refund formula and other applicable conditions, the admissible refund claim is determined at Rs. 20 lakh. Under the amended Section 54(6), the proper officer may sanction a provisional refund of up to Rs. 18 lakh (90% of Rs. 20 lakh), subject to the prescribed conditions and safeguards. The final refund amount will be determined after verification, with appropriate adjustment of the amount already sanctioned provisionally.

This amendment can improve the working capital position of businesses affected by accumulated ITC. Instead of waiting for the entire verification process to complete, eligible taxpayers may receive a substantial portion of their refund provisionally.

It is relevant that CBIC Instruction No. 06/2025-GST dated 03.10.2025 had already provided for system-based, risk-driven processing of inverted duty structure refund applications filed on or after 01.10.2025. The statutory amendment now expressly recognises provisional refunds for this category.

Nevertheless, the expression "may" in Section 54(6) is important. The amendment does not provide an unconditional right to receive 90% of every refund claim. Eligibility, verification requirements, prescribed safeguards and final adjustment continue to govern the refund process.

Small Refunds on Export of Goods Are No Longer Barred by the Minimum Threshold

Section 155 has also amended Section 54(14) of the CGST Act, effective from 01.11.2026, providing relief to exporters claiming refunds of tax paid on goods exported out of India.

Previously, Section 54(14) prohibited payment of refunds under Section 54(5) or Section 54(6) where the amount was less than Rs. 1,000. This restriction applied even to small refund claims for exports of goods made with tax paid.

The amended provision removes the Rs. 1,000 minimum threshold specifically for refunds of tax paid on goods exported out of India. Consequently, such refunds are no longer barred merely because the amount involved is below Rs. 1,000.

For example, where an exporter is entitled to a refund of Rs. 750 on goods exported with payment of IGST, the claim will no longer be rejected solely because it falls below the earlier monetary threshold. The exporter must, of course, satisfy the other applicable statutory requirements.

The relief is deliberately limited. The minimum threshold of Rs. 1,000 continues for other refund categories covered by Section 54(14), including refund claims for unutilised ITC arising from zero-rated supplies without payment of tax or an inverted duty structure.

This distinction matters because not all export-related refunds are treated the same. The amendment specifically benefits refunds of tax paid on exported goods and should not be interpreted as a general abolition of the minimum threshold for every GST refund.

Although the monetary amount involved in individual claims may be small, the amendment removes an unnecessary restriction and provides relief to exporters whose otherwise admissible refunds fall below the earlier limit.

The 57th GST Council Recommends Wider Refunds of Accumulated ITC

The 57th GST Council Meeting held on 08.10.2026 recommended amendments to Section 54(3) of the CGST Act, 2017 and the relevant Rules to widen the scope of refunds of accumulated ITC. For inverted duty structure cases, the Council recommended allowing refunds of ITC on input services availed on or after 01.11.2026. It also recommended extending refunds of ITC on capital goods in both inverted duty structure and zero-rated supply cases, for credit availed on or after 01.04.2027, with the refundable credit spread over 60 months.

These proposed changes are expected to reduce the accumulation of unutilised ITC and improve taxpayers' working capital position

4. Existing Authorities May Hear Appeals Until the National Appellate Authority Is Constituted

Section 156 of the Finance Act, 2026 inserted sub-section (1A) in Section 101A of the CGST Act, effective from 01.04.2026. The amendment addresses the absence of a constituted National Appellate Authority for Advance Ruling.

The GST advance ruling mechanism allows taxpayers to obtain decisions on specified questions relating to their proposed or existing transactions. However, Appellate Authorities for Advance Ruling in different States or Union Territories may deliver conflicting decisions on the same question involving the same applicant. The statutory framework envisages a National Appellate Authority to address such differences. However, the failure to constitute that authority has created a practical difficulty in implementing the appellate mechanism.

The newly inserted Section 101A(1A) authorises the Government, on the recommendations of the GST Council, to empower an existing authority, including a Tribunal, to hear appeals under Section 101B until the National Appellate Authority is constituted.

Where such an existing authority is notified, the provisions contained in Section 101A(2) to (13), dealing with the National Appellate Authority's constitution and related matters, will not apply to that arrangement. References to the National Appellate Authority in the relevant Chapter will instead be construed as references to the notified authority.

The amendment creates a practical transitional mechanism without requiring the Government to wait for the constitution of a separate National Appellate Authority.

However, inserting Section 101A(1A) does not, by itself, identify or appoint an existing authority to hear these appeals. The Government must exercise the enabling power through the prescribed notification process.

The amendment is therefore important for taxpayers facing conflicting appellate advance rulings, as it provides a statutory route for establishing an interim appellate arrangement.

5. Place of Supply for Intermediary Services Undergoes a Fundamental Change

Section 157 of the Finance Act, 2026 has omitted Section 13(8)(b) of the IGST Act, 2017 with effect from 30.03.2026. This is a significant development for Indian service providers dealing with overseas customers.

Before the amendment, Section 13(8)(b) prescribed that the place of supply of intermediary services would be the location of the supplier. Consequently, when an intermediary in India provided services to an overseas principal, the place of supply was treated as India, even though the recipient was outside India.

This special provision prevented such services from meeting the condition under Section 2(6) of the IGST Act that requires the place of supply to be outside India for a service to qualify as an export of services.

With the omission of Section 13(8)(b), intermediary services are no longer subject to that special place-of-supply provision. Their place of supply will ordinarily be determined under the general provision contained in Section 13(2), subject to any other applicable specific provision of Section 13. Under Section 13(2), the place of supply is generally the location of the recipient of services. Therefore, where an Indian intermediary provides services to a recipient located outside India, the place of supply may now be outside India.

Consider an Indian commission agent who arranges sales for a German company and receives commission from that company. Before 30.03.2026, the place of supply of the intermediary service was treated as India under Section 13(8)(b). After its omission, the general or default provision under Section 13(2) would ordinarily place the supply in Germany, where the recipient is located.

The service may consequently qualify as an export, provided all the conditions under Section 2(6) of the IGST Act are satisfied. These include the location of the supplier and recipient, the place of supply, the prescribed receipt of consideration, and the requirement concerning establishments of a distinct person.

The Definition of Intermediary Remains Unchanged

An important distinction must be understood. The omission of Section 13(8)(b) does not abolish the concept of intermediary services or amend their definition under Section 2(13) of the IGST Act.

An intermediary continues to mean a broker, agent or other person who arranges or facilitates a supply between two or more persons, excluding a person who supplies the relevant goods, services or securities on his own account.

Accordingly, the distinction between independent service providers and intermediaries remains legally relevant. However, the place-of-supply consequences of being classified as an intermediary have changed substantially following the omission of Section 13(8)(b).

Travel agents, commission agents, tour operators, and other persons engaged in arranging or facilitating supplies may benefit from the amended position where they provide services to overseas recipients and the statutory export conditions are satisfied. Their classification must nevertheless be determined from the actual contractual arrangement and nature of activities performed.

The effective date of 30.03.2026 is particularly important. Transactions relating to earlier periods must be examined with reference to the provisions applicable during those periods. The omission should not automatically be treated as retrospectively altering the place of supply of services rendered before that date.

The amendment offers a significant opportunity for Indian intermediaries operating in international markets. Businesses should review their contracts, invoicing arrangements, receipt of consideration and export documentation to determine the correct GST treatment.

The Amendments Seek to Simplify Compliance and Improve Business Liquidity

The amendments introduced through Sections 153 to 157 of the Finance Act, 2026 seek to simplify GST compliance, provide greater flexibility in post-supply discounts and credit notes, facilitate faster refunds and address conflicting advance rulings. The omission of Section 13(8)(b) of the IGST Act also provides important relief to Indian intermediaries supplying services to overseas recipients, subject to fulfilment of the prescribed conditions.

The practical benefits of these amendments will depend on their correct application from the respective effective dates. Taxpayers must therefore ensure proper documentation, timely compliance and adherence to the applicable statutory requirements.

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