New Delhi, November 1, 2026—Three amendments to India’s goods and services tax (GST) law have taken effect, changing the treatment of eligible post-supply discounts, provisional refunds for businesses facing an inverted duty structure, and small refunds on goods exported with payment of tax. The changes bring Sections 153 to 155 of the Finance Act, 2026, into force under Notification No. 03/2026–Central Tax, dated October 26.

The amendments are targeted rather than a general change to GST rates. They revise Sections 15, 34, and 54 of the Central Goods and Services Tax Act, 2017. Businesses that use dealer incentives or year-end rebates, manufacturers that accumulate input tax credit because their inputs carry a higher GST rate than their outputs, and exporters with small refund claims are among those that should review their processes.

The effective date is November 1, but the practical benefit will depend on how businesses issue and report credit notes, how recipients account for input tax credit (ITC), and whether refund claims meet the law’s conditions. The changes do not make every discount tax-adjustable or every refund automatic.

What changes from November 1?

The government has brought three provisions of the Finance Act, 2026 into force through the commencement notification. Section 153 changes the GST valuation rule for post-supply discounts under Section 15 of the CGST Act. Section 154 updates Section 34, which governs credit notes. Section 155 changes Section 54, which deals with refunds.

In practical terms, the amended law removes two conditions that previously applied to eligible post-supply discounts: the need for the discount to be covered by an agreement made at or before the supply, and the need to link the discount to specific invoices. A supplier must still issue the relevant credit note, and the recipient must reverse the ITC attributable to the discount in accordance with the law.

The refund amendments extend the provisional-refund mechanism to qualifying inverted-duty-structure claims and remove the ₹1,000 minimum-refund restriction for tax refunds on goods exported with payment of tax. These are specific changes to the statutory framework, not a blanket waiver of other refund requirements.

Manufacturers and distributors often agree on commercial incentives after goods have already been supplied. A company may offer a volume rebate when a dealer reaches a sales target, provide a year-end incentive, or grant a discount to support a particular product line. Such arrangements can span multiple invoices and may only be calculated once sales data for a period is complete.

Under the earlier wording of Section 15(3)(b), a post-supply discount could be excluded from the taxable value only if it was established through an agreement entered into at or before the time of supply, linked to the relevant invoices, and accompanied by reversal of the attributable ITC by the recipient. Businesses could face disputes where a genuine commercial rebate had been decided later or could not be tied neatly to individual invoices.

From November 1, the pre-existing-agreement and invoice-specific-linkage conditions have been removed from the provision. The law now expressly recognizes the credit-note route for a qualifying post-supply discount while retaining the requirement that the recipient reverse the ITC attributable to that discount. Section 34(1) has been amended to align the credit-note provision with the revised valuation rule.

Consider a manufacturer that sells goods to a distributor throughout a quarter and later grants a rebate after the distributor meets a sales target. The final amount may not have been known when the original invoices were issued. Under the revised provision, the absence of a prior discount agreement or a one-to-one link with each invoice no longer automatically prevents the supplier from using a GST credit note to reflect the eligible discount.

That does not mean the supplier can simply reduce its tax liability by recording a commercial payment. The supplier must issue the appropriate document, and the recipient must reverse the corresponding ITC as required. Both parties should reconcile the credit note against their records and returns so that the tax adjustment is supported on each side of the transaction.

For finance teams, the immediate task is to review dealer schemes, rebate policies, sales incentive agreements, and credit-note workflows. A company may need to update internal approval steps and ensure that the tax team is informed when commercial teams finalize discounts after the original supply.

Also read: GST Reform 2025: Key Tax Changes and Impact Explained

An inverted duty structure can arise when the GST rate on inputs is higher than the rate charged on a business’s outward supplies. The mismatch can leave a taxpayer with accumulated input tax credit that cannot be fully used to discharge output tax. Depending on the products and supply chain involved, this can tie up working capital that would otherwise be available for wages, purchases, inventory, or investment.

Section 54(6) of the CGST Act provides for provisional refunds in specified circumstances. The amendment extends the statutory facility for a provisional refund of up to 90% of the claimed amount to eligible refund claims arising from accumulated unutilized ITC because of an inverted duty structure under Section 54(3), subject to the applicable conditions.

The change matters because a business waiting for a refund may have to finance routine operations while the credit remains locked in the tax system. Where a claim qualifies for provisional processing, the possibility of receiving a large part of the amount before final verification may reduce that pressure. The impact will vary according to the taxpayer’s claim, documentation, risk assessment, and the time taken to process the application.

Companies that regularly carry accumulated ITC should review how they calculate eligible credit, reconcile returns, and maintain supporting documents. They should also monitor official guidance on the process used to identify claims suitable for provisional sanction and on how any provisional amount is reconciled with the final refund determination.

Small export refunds below ₹1,000

The third amendment addresses the minimum amount below which certain GST refunds were not payable. Section 54(14) previously restricted refunds below ₹1,000 in the circumstances covered by the provision. From November 1, that minimum does not apply to refunds of tax paid on goods exported out of India.

The change may be relevant to exporters whose individual claims are small, including businesses sending lower-value consignments. Where tax has been paid on exported goods and the claim otherwise meets the statutory requirements, an amount below ₹1,000 will no longer be disqualified solely because it falls under the former minimum threshold.

The scope is important. The amendment is directed at refunds of tax paid on exports of goods; it should not be treated as a general removal of the minimum threshold for every kind of GST refund. Nor does it mean that a claim is admissible simply because it is small. Export documentation, tax payment, and other applicable conditions continue to matter.

Exporters should review any small claims that were previously not pursued because of the threshold and confirm the correct treatment with their tax advisers or the relevant GST authority. They should avoid assuming that every historical claim can be filed afresh: the applicable period, limitation rules, and any other legal conditions must be checked for the particular transaction.

The three statutory amendments form part of a broader package of GST administration changes discussed after the 57th meeting of the GST Council on October 8. Reporting by The Times of India on October 31 said the rollout beginning November 1 also includes simplified registration procedures for eligible small sellers using e-commerce platforms, changes to the registration application process, and greater use of system-based processing for certain refunds.

The report said eligible small online sellers may be able to use an e-commerce operator’s warehouse as their principal place of business for registration in states where they do not have a physical office, subject to conditions. It cited a monthly ITC threshold of up to ₹2.5 lakh and said the seller must have a genuine physical presence in at least one state, with authentication and verification requirements applying there. Sellers should check the relevant notification, portal instructions, and eligibility criteria before relying on the facility.

The wider refund-process changes are intended to reduce avoidable manual handling for eligible claims. However, administrative streamlining and the statutory amendments discussed above are not identical. Businesses should identify which notification or circular governs their situation rather than assuming that every new process applies to every taxpayer or refund category.

The GST Council’s published material on the 57th meeting provides the policy background, while the commencement notification establishes the date on which Sections 153 to 155 of the Finance Act, 2026, take effect. The Central Board of Indirect Taxes and Customs (CBIC) remains the key source for the applicable notifications, circulars, and operational instructions.

Also read: GST Council Backs Changes to Enforcement and Refund Rules

Manufacturers, distributors, and retailers

Businesses that offer performance-linked rebates, volume discounts, or year-end incentives should review how the discounts are approved and documented. They should confirm that credit notes are issued correctly, that the recipient’s ITC reversal is tracked, and that the tax adjustment is reflected consistently in both parties’ records. Commercial teams should not assume that the revised rule eliminates the need to keep evidence of how a discount was calculated.

Businesses with accumulated input tax credit

Manufacturers and other taxpayers that regularly claim refunds because the tax on inputs exceeds the tax on outward supplies should check whether their claims fall within the eligible inverted-duty category. They should reconcile purchase and sales records, confirm the credit balance and follow the current filing instructions. Faster provisional processing may help cash flow, but it is not a substitute for a complete and defensible claim.

Exporters

Export businesses should review the effect of the revised minimum-refund rule on small IGST refund claims relating to goods exported with payment of tax. The amendment may make smaller amounts recoverable where the remaining conditions are satisfied. Exporters should preserve shipping, tax and payment records and confirm the applicable filing period before submitting any claim.

Small online sellers

Sellers that store goods in marketplace warehouses across state borders should examine the new registration pathway carefully. The ability to use an operator’s warehouse is conditional; it does not remove the need to maintain valid records or comply with state-wise registration obligations. A seller should confirm the platform’s consent process, authentication requirements and the relevant GST portal instructions before changing its registration details.

Also read: Foreign Investor Flows: What to Watch in Indian Markets This Week

The November 1 commencement date does not mean that all GST rates have changed or that every recommendation made by the GST Council has become operative at once. The notification specifically brings Sections 153 to 155 of the Finance Act, 2026 into force. Other measures may have separate commencement dates, rules or administrative instructions.

Businesses should also distinguish a tax credit note from a purely commercial credit note. The new route can support a qualifying GST adjustment when the statutory conditions are met; it does not make every price concession automatically reduce taxable value. The recipient’s corresponding ITC treatment remains central to the supplier’s adjustment.

Similarly, the provisional-refund amendment does not guarantee a 90% payment for all refund claims, and the removal of the ₹1,000 minimum is limited to the category specified for tax paid on exported goods. Eligibility, documentation, statutory time limits and verification remain relevant.

The next test is implementation: businesses will need clear instructions on credit-note reporting, recipient-side ITC reversal, transitional claims and provisional refunds under the inverted-duty provision.

Tax teams should keep a record of the position adopted for transactions close to the effective date and seek professional advice where a discount relates to an earlier supply or where a refund claim spans multiple tax periods. Until additional official clarification is issued, transitional cases should not be resolved by assumption.

Exporters should confirm that small claims meet the remaining requirements; businesses with accumulated ITC should verify eligibility for provisional treatment; and suppliers and dealers should reconcile credit notes and ITC records.