# Discounts — Exclusion from Value of Supply [Section 15(3)]
Discounts can be classified by timing, and each type follows different rules.
## (1) Pre-supply or On-supply Discount
Examples: 'Buy more, Save more' offers, trade discount.
Excluded from value of supply if BOTH:
- Discount given before or at the time of supply, AND
- Discount shown on the invoice.
If shown on invoice and given on/before supply → reduce straight from value of supply.
## (2) Post-supply Discount
Examples: payment discount, volume discount, secondary discount.
Not every discount can be decided upfront. A post-supply discount may still be reduced from value of supply, but only if ALL THREE conditions are satisfied:
1. Discount is as per terms agreed in a contract existing at the time of supply, AND
2. Discount is linked to specific invoices, AND
3. The recipient has reversed proportionate ITC.
If even one condition fails, the discount cannot reduce the value of supply (typically handled via a financial/commercial credit note — see Circular below).
## Special: No Claim Bonus (NCB) by Insurance Companies
When no claim is made under a policy in the previous period, the insurer reduces the current period's gross premium by an amount called No Claim Bonus.
- This is a pre-supply discount recorded on the invoice.
- → Net premium (after NCB) is the value of supply.
## Circular — Clarifications on Post-Supply / Secondary Discounts
### (i) Financial / Commercial Credit Note (NOT a GST credit note)
When a supplier issues a commercial credit note (i.e., NOT under Section 34 of CGST Act):
- The supplier's GST liability is NOT reduced.
- The recipient does NOT have to reverse ITC.
This is purely a commercial settlement; tax remains on the original value.
### (ii) Can a post-supply discount be treated as consideration paid by the manufacturer to dealer for further supply to end customer?
- If there is no agreement between manufacturer and the end customer → it is not a supply.
- If there is an agreement between manufacturer and end customer → it is included in the supply value.
### (iii) Can a post-supply discount be treated as consideration for promotional activities by the dealer?
Only if BOTH:
- The dealer undertakes specific promotional activities (advertisement, branding, etc.), AND
- The consideration for those activities is clearly stated in the agreement.