GST rules on post-sale discounts, export refunds to change from 1 November

India’s GST changes take effect on 1 November after the finance ministry brought Sections 153 to 155 of the Finance Act, 2026, into force. They amend Sections 15, 34 and 54 of the CGST Act, 2017. The reforms cover post-sale discounts, export refunds and tax procedures. They matter because businesses receive clearer rules and face fewer documentation hurdles.

The biggest change concerns discounts granted after a sale. A seller may issue a GST credit note and exclude an eligible discount from the taxable value, if the buyer reverses the related input tax credit. The earlier requirement for a discount agreement made before, or at, supply and linked to invoices has been removed.

The change particularly affects FMCG, pharmaceutical, retail and consumer-durables businesses. Their dealer incentives and volume discounts are common. The CBIC also issued related clarifications on 26 October covering export proceeds, registration, adjudication and input tax credit.

A post-sale discount is a reduction offered after the original supply has happened. It may reflect dealer incentives, sales targets or volume purchases. Under the amended GST rules, an eligible discount can reduce the taxable value through a GST credit note. This matters because the seller’s tax calculation can reflect the lower effective price.

For example, a supplier sells goods for Rs 100,000 and later grants a volume discount. The supplier can issue a credit note for the eligible amount and adjust the taxable value, provided the buyer reverses the corresponding input tax credit. The former requirement for an agreement made before or at supply has been removed.

The relief is especially relevant to FMCG, pharmaceutical, retail and consumer-durables businesses. Previously, lacking a clearly documented agreement could make the credit note an additional business cost. The new rule simplifies documentation while preserving the required ITC adjustment.

Input tax credit is the tax a business can use against its GST liability after paying tax on purchases. When a seller later reduces the sale price through a credit note, the tax attached to that discounted portion should no longer remain available to the buyer. Reversal keeps the tax outcome aligned with the revised price.

For example, a supplier grants a buyer a volume discount after invoicing. The supplier issues a GST credit note and reduces the taxable value for the eligible discount. The buyer must then reverse the corresponding ITC. This links the seller’s tax adjustment with the buyer’s credit adjustment.

The rule therefore provides relief without creating an unintended double benefit. It also replaces the earlier documentation barrier, which required the discount to be agreed before or at supply and linked to relevant invoices. The new approach is particularly useful for industries with frequent dealer incentives and volume-based discounts.

The CBIC said Rule 96(10) was omitted retrospectively from 23 October 2017, following the Supreme Court’s 6 August 2026 judgment in Goodluck India Ltd vs. Union of India and connected matters. The rule had restricted exporters from claiming IGST refunds while using specified input exemptions or concessions. Pending cases can therefore receive the benefit of the retrospective treatment.

The rule was omitted prospectively from 8 October 2024. The court held that, without a saving or sunset clause, the omission applied to proceedings pending on that date. The CBIC directed officers to follow that judgment and extended the same treatment to Rules 89(4A) and 89(4B).

This can provide relief where pending cases were affected by the omitted restrictions. However, it does not make every past refund claim automatically admissible. Exporters must still satisfy applicable requirements, and officers must examine each claim under the relevant GST rules and facts.

The CBIC has set processing deadlines for GST registration applications. Applications involving successful Aadhaar authentication must be processed within seven working days. Where physical verification is required, processing must finish within 30 days after that verification. These timelines target delays, repeated queries and inconsistent documentation demands.

For example, an applicant whose Aadhaar authentication succeeds should expect the application to be processed within seven working days. Another applicant selected for physical verification enters the 30-day period after the verification is completed. Bank details are not mandatory at the application stage, although applicants may provide them if available.

The reform also creates an escalation route. Applicants can raise grievances with designated tax authorities if applications face undue delays or unwarranted queries. The stated aim is more consistent administration and faster access to GST registration, while retaining physical checks where the process requires them.

The CBIC clarified that payment through certain repatriable rupee accounts can satisfy the export-of-services condition. The clarification includes Special Non-Resident Rupee, or SNRR, accounts and INR Nostro accounts. It matters because exporters may receive cross-border payments in permitted rupee arrangements rather than only through the payment patterns businesses traditionally expect.

An Indian service exporter could receive payment through an eligible repatriable rupee account, subject to applicable requirements. Alternatively, export receivables could be set off against import payables. That set-off qualifies when the settlement follows Reserve Bank of India directions. The payment route must therefore fit the stated regulatory conditions.

The clarification aligns GST treatment more closely with foreign-exchange regulations. Manoj Mishra said recognition of these receipts, RBI-permitted set-offs and specified net-retention arrangements reflects changing cross-border payment realities. The CBIC also clarified rules involving reinsurance brokers and export-proceeds realization.

GST is India’s goods and services tax on supplies. Input tax credit, or ITC, lets an eligible business use tax paid on business purchases against GST charged on its own taxable supplies. An integrated-GST refund returns eligible IGST connected with exports. These mechanisms prevent tax from being treated separately at every stage and support the export framework.

For example, a business buys inputs and pays GST, then sells goods or services and charges GST. It may use the purchase tax as ITC against its output liability. If it exports and pays integrated GST, it may seek an IGST refund, subject to the applicable rules. A post-sale credit note can reduce taxable value, but the buyer must reverse related ITC.

The article links these mechanisms through new discount rules and refund clarifications. Rule 96(10)’s retrospective omission may help pending IGST-refund cases. However, the CBIC said that treatment does not automatically admit every past claim.