Post-Sale Discount Under GST From 1 November 2026: Credit Notes and Your Receivables
Post-sale discount under GST, from 1 November 2026: a supplier can reduce taxable value for a discount given after the sale by issuing a GST credit note, provided the buyer reverses the related input tax credit. The earlier condition that the discount be agreed at or before the time of supply is removed, under CBIC Notification No. 03/2026-Central Tax.
Many manufacturers, brands and distributors pay their dealers a rebate after the sale: a quarter-end volume discount, a target bonus or a festive scheme. Until now, GST let a supplier cut the taxable value for such a discount only if it was agreed before or at the time of supply and linked to specific invoices. Many rebates are decided later, so suppliers could end up paying GST on value they never collected.
That condition goes from 1 November 2026. CBIC's Notification No. 03/2026-Central Tax, dated 26 October 2026, brings sections 153 to 155 of the Finance Act, 2026 into force on that date. The same notification also starts a wider provisional refund route for inverted duty refund claims. Diwali falls on 8 November 2026, when dealer schemes peak. This guide explains what changes, what it means for your receivables, drawing power and invoice discounting, and what to fix before the first credit notes go out.
Post-sale discount under GST: what changes on 1 November 2026
A post-sale discount under GST is a discount given after the invoice is raised. From 1 November 2026, the supplier can exclude it from taxable value if two things happen:
- The supplier issues a GST credit note for the discount.
- The buyer reverses the input tax credit (ITC) that relates to the discount, as section 34 of the CGST Act requires.
The old requirement that the discount be fixed in an agreement made at or before the time of supply, and linked to the relevant invoices, is removed. Section 34(1) is amended so that a credit note can be issued for these discounts.
As of 28 October 2026, CBIC's Notification No. 03/2026-Central Tax of 26 October 2026 brings the Finance Act, 2026 amendments to sections 15, 34 and 54 of the CGST Act into force on 1 November 2026.
| Before 1 November 2026 | From 1 November 2026 | |
|---|---|---|
| Discount agreed before or at supply, linked to invoices | Can reduce taxable value, if the buyer reverses ITC | Can reduce taxable value through a credit note, if the buyer reverses ITC |
| Discount decided after supply (turnover rebate, target bonus, festive scheme) | Usually could not reduce taxable value; often settled through a commercial credit note with no GST change | Can reduce taxable value through a GST credit note, if the buyer reverses the related ITC |
| Buyer's ITC on the discount | Reversed where the discount reduced value | Must be reversed; this is a condition for the supplier's reduction |
| Paper trail | Agreement plus invoice link | GST credit note plus the buyer's ITC reversal |
The change was reported as a relief for sectors where dealer incentives and volume discounts are common, such as consumer goods, pharmaceuticals, retail and consumer durables (BusinessLine, 27 October 2026).
What stays the same
The new rule removes a paperwork condition. It does not remove the need to prove the discount.
- You still need a credit note. It must be issued and declared in your returns within the time limit in section 34.
- The buyer still has to reverse ITC. Your reduction depends on your customer's action, so you need a way to confirm it.
- Commercial terms still decide who bears GST on the rebate. Agree in writing whether the rebate is stated before or after GST.
- Dealer schemes still need a business record. Keep the scheme circular, the dealer's achieved volume and the working of each rebate.
The GST Council's 8 October 2026 recommendations also cover how long a buyer can keep a credit note pending in the Invoice Management System (IMS). That is part of a returns package the Council wants in force from the April 2027 return, so it does not change the 1 November rule.
Who gains most
The change helps businesses whose rebates depend on results known only after the sale.
- Manufacturers and brands that pay dealers quarterly or annual volume rebates.
- Distributors and stockists that pass on scheme discounts to retailers and get their own rebates from principals.
- Pharma, consumer goods and durables suppliers that run target-linked or festive schemes.
- Building material suppliers that give contractors and developers volume discounts after a project phase.
If your discounts are always printed on the invoice, little changes for you. If you run festive schemes this season, the rule is live for the credit notes you issue from 1 November 2026.
Worked example 1: the GST cost of a rebate that was not pre-agreed
Illustrative example, assuming a supplier sells ₹3 crore of goods (taxable value) to dealers in a quarter at 18% GST and later pays a 2% turnover rebate of ₹6 lakh:
| Item | Old rule, rebate not pre-agreed | From 1 November 2026, with GST credit note |
|---|---|---|
| Taxable value for GST | ₹3,00,00,000 | ₹2,94,00,000 |
| Output GST at 18% | ₹54,00,000 | ₹52,92,000 |
| GST on the ₹6 lakh rebate | ₹1,08,000 paid by the supplier | Nil, if the dealer reverses ₹1,08,000 of ITC |
| Credit note to the dealer | Commercial credit note | GST credit note of ₹7,08,000 (₹6,00,000 plus ₹1,08,000 GST) |
On these assumptions the supplier's GST outflow falls by ₹1,08,000 for the quarter. The dealer's ITC falls by the same amount, so the dealer must agree to the reversal. The money saved stays in your bank account instead of going out with the GST return, which lowers the draw on a cash credit (CC) or overdraft (OD) line.
Why this matters for receivables and invoice discounting
Every credit note reduces what a customer owes you. Lenders call this dilution: the share of invoiced sales that is never collected because of discounts, returns or claims. With GST now encouraging formal credit notes for rebates, more of these reductions will show up on paper, and lenders will see them in your GST data.
Worked example 2: drawing power after quarter-end credit notes
Drawing power is the amount you can draw from a CC or OD limit, based on your stock and receivables less the lender's margin. Illustrative example, assuming ₹3.54 crore of dealer receivables (₹3 crore plus 18% GST), a 25% receivables margin and quarter-end credit notes of ₹7.08 lakh:
| Item | Before credit notes | After credit notes |
|---|---|---|
| Receivables | ₹3,54,00,000 | ₹3,46,92,000 |
| Drawing power at 75% | ₹2,65,50,000 | ₹2,60,19,000 |
| Change | ₹5,31,000 lower |
If your CC is drawn close to drawing power, ₹5.31 lakh of headroom disappears when the credit notes are booked. Under RBI's asset classification rules for commercial banks, an account that stays above drawing power for 90 days is out of order. Read more in how banks calculate your working capital limit and cash credit NPA rules.
Worked example 3: a discounted invoice that later gets a discount
Illustrative example, assuming a ₹11.8 lakh invoice (₹10 lakh plus 18% GST) discounted at an 80% advance of ₹9.44 lakh, and a later 10% rebate credit note of ₹1.18 lakh that the buyer deducts from its payment:
| Item | Amount |
|---|---|
| Invoice value | ₹11,80,000 |
| Advance received | ₹9,44,000 |
| Balance due to you before the credit note | ₹2,36,000 |
| Credit note (₹1,00,000 plus ₹18,000 GST) | ₹1,18,000 |
| Buyer pays | ₹10,62,000 |
| Balance due to you after repaying the advance | ₹1,18,000 |
Here the advance is still covered. A larger discount, a higher advance or several credit notes on the same invoice can leave a shortfall. Who bears it depends on your agreement. With recourse, you do. See invoice discounting with or without recourse.
Lenders differ on how they treat receivables with pending credit notes. Some cap dilution in the sanction terms, some reduce the advance rate, and some exclude disputed invoices from drawing power. Ask before your festive scheme closes.
Refunds: inverted duty claims and exports from 1 November 2026
Section 155 of the Finance Act, 2026, in force from 1 November 2026, makes two refund changes.
- Inverted duty structure. This is when tax on inputs is higher than tax on your outputs, so ITC builds up. The provisional refund provision in section 54(6), which already covered zero-rated supplies, now also covers unutilised ITC refunds under the inverted duty route.
- Exports of goods with payment of tax. The ₹1,000 minimum refund threshold in section 54(14) no longer applies to these claims.
The GST Council's 8 October 2026 recommendations said 90% of zero-rated and inverted duty refund claims would be sanctioned provisionally by the system, based on risk evaluation. The Council also named 1 November 2026 as the cut-off for refunds of ITC on input services under the inverted duty route. Phase dates for the automated system and the amended rules decide how fast money reaches you, so check the GST portal before you plan on it.
Illustrative example, assuming a ₹40 lakh inverted duty refund claim, a 90% provisional refund of ₹36 lakh and a CC at 10% a year: every 30 days sooner saves about ₹29,589 of interest, or releases the same ₹36 lakh of CC limit for stock and receivables. Our 57th GST Council guide covers the full refund package.
The other CBIC circulars of 26 October 2026
CBIC also issued eight circulars dated 26 October 2026, numbered 257 to 264, following the 57th GST Council meeting (as reported by tax publishers on 27 October 2026). They cover GST registration guidelines, demand and adjudication proceedings, pre-deposits for appeals, input service distributors, ITC options for banks and NBFCs, ITC on demonstration vehicles, receipt of export proceeds, and the omission of rule 96(10) for pending export refunds. For borrowers, the registration and export circulars matter most: fewer registration delays for new branches and depots, and clearer export refund claims. Read each circular with your tax adviser.
What to do before 1 November 2026
- List every post-sale scheme running in October and November: turnover rebates, target bonuses, festive and cash discounts.
- Decide the GST treatment for each. From 1 November, a GST credit note can reduce value if the buyer reverses ITC. Agree with your tax adviser how schemes that straddle the date are handled.
- Tell your dealers in writing that ITC reversal is a condition, and how you will confirm it.
- Separate GST credit notes from commercial credit notes in your books, so receivables, returns and stock statements match.
- Recompute drawing power with expected quarter-end credit notes, and keep headroom on your CC.
- Check your invoice discounting terms for dilution, recourse and how credit notes on discounted invoices are settled.
- Track refunds separately. Note inverted duty and export claims filed from 1 November, and the date each refund arrives.
What to ask your lender
- How are credit notes and rebates treated in my drawing power and stock statement?
- Is there a dilution cap or a lower advance rate for customers with frequent credit notes?
- On a discounted invoice, what happens if the buyer deducts a credit note from payment?
- Will GST refunds due count as a current asset for my working capital limit?
What to watch next
Watch for CBIC rules, forms and GSTN advisories on credit notes and provisional refunds after 1 November 2026. On rates, RBI raised the repo rate by 25 basis points to 5.50% on 7 October 2026 and said policy action ahead "can only be a rate hike or a pause". The next MPC meeting is on 2 to 4 December 2026. Higher rates make every rupee of trapped GST or unreleased receivables more expensive to fund.
How MoneyKarma helps
MoneyKarma is a loan distribution platform for Indian businesses and real estate developers, with 90+ lenders. Not a lender. We help suppliers and manufacturers compare invoice discounting and working capital options from public sector banks, private banks, NBFCs and financial institutions, and prepare the receivables, GST and stock papers each lender asks for. Every credit decision is made by the lender. Our team responds within 24 hours on average. Apply here to start.