GST Law
Post-Sale Discounts under GST: Current Credit-Note Rules and the Pending 2026 Amendment
A fact-checked guide separating today's post-sale discount rules from the Finance Act 2026 amendment that has been enacted but is not yet in force.
NRS Editorial Desk · Published 2026-08-25 · 9 min read
Start by identifying the type of credit note
The phrase 'credit note' is used for different commercial and tax outcomes. The document name alone does not decide whether the supplier can reduce GST liability. The agreement, invoice link, accounting treatment, recipient's ITC and statutory conditions all matter.
| Route | Supplier's GST liability | Recipient's ITC | Typical use |
|---|---|---|---|
| Commercial or financial credit note | Original output tax is not reduced merely because the commercial value is adjusted | Circular 251 says full ITC may remain where the original transaction value and tax are unchanged, subject to normal ITC eligibility | A commercial discount or settlement without a GST adjustment |
| GST credit note with tax adjustment | Reduction is available only when the applicable statutory conditions and reporting requirements are met | Corresponding ITC attributable to the discount must be reversed where required | A post-supply discount intended to reduce taxable value and tax |
Current Section 15 conditions
Under the current operative Section 15(3)(b), a post-supply discount can be excluded from the value of supply where it is established under an agreement entered into at or before the supply, is specifically linked to relevant invoices, and the recipient reverses the ITC attributable to the discount on the basis of the supplier's document.
That current rule should be applied until the 2026 amendment receives an effective date. A board-approved discount policy created after the event, a generic ledger adjustment or an unlinked credit note should not automatically be treated as satisfying the operative conditions.
What Circular 251 clarified
- A recipient making a reduced commercial payment does not reverse ITC merely because the supplier issued a financial or commercial credit note, where the original transaction value and tax liability remain unchanged and normal ITC conditions are met.
- A manufacturer's ordinary post-sale discount to a dealer is not automatically consideration for a separate service or for the dealer's onward supply.
- Where the manufacturer has an arrangement with the end customer for a discounted onward sale through the dealer, the payment can form part of the overall consideration for that onward supply.
- Specific promotional services—such as an agreed campaign or co-branding activity with defined consideration—can be a separate taxable supply by the dealer. Normal efforts to sell the dealer's own stock are not automatically such a service.
What Circular 253 did not change
Circular 253 withdrew Circular 212/6/2024-GST and the procedure it had prescribed for furnishing evidence of compliance with Section 15(3)(b)(ii). It did not, by itself, repeal the substantive current-law conditions in Section 15(3)(b). Removing an evidence procedure is not the same as bringing the later Finance Act amendment into force.
What the 2026 amendment is intended to change
The Finance Act 2026 change is intended to remove the current requirement that a post-sale discount be established by a prior agreement specifically linked to the relevant invoices, while connecting the treatment to a Section 34 credit note and reversal of the recipient's attributable ITC. The policy direction is important, but the commencement notification remains decisive.
Reporting and documentation checklist
- Classify the document as a commercial credit note or a GST credit note before posting it.
- Record the commercial reason, agreement or scheme, affected invoices and calculation method.
- Confirm whether output tax is being reduced and whether the recipient has reversed attributable ITC.
- Review the Section 34 reporting cut-off: 30 November following the financial year or the date of the relevant annual return, whichever is earlier.
- Separate a genuine discount from payment for advertising, customer support or another defined service.
- Check the latest commencement notification before applying the Finance Act 2026 wording.
Why transaction-specific review matters
A distribution incentive, year-end rebate, dealer promotion and end-customer price support can look similar in the ledger but have different GST consequences. Businesses in Manjeri, Malappuram district and Calicut can use the related GST service route to share the scheme document, sample invoices, credit-note wording and proposed return treatment for a defined review.