GST on Early-Payment Discount Given After Invoice: Value-of-Supply and ITC Reversal Checklist
By Ravi Sisodia · Reviewed by CA Divyanshu Sengar · Updated 5 October 2026
2-minute summary
- A post-invoice early-payment discount can reduce GST value only if it satisfies section 15(3): the discount must be established in an agreement entered into at or before the time of supply, specifically linked to relevant invoices, and the recipient must reverse attributable ITC.
- If the supplier decides after supply to grant an ad hoc discount that was not pre-agreed, it generally cannot be excluded from value under section 15(3). A financial/commercial credit note may still be issued, but output tax is not automatically reduced.
- Do not rely on Circular 105/24/2019-GST for secondary discounts: CBIC withdrew that circular ab initio through Circular 112/31/2019-GST. Use the statute and surviving guidance, including Circular 92/11/2019-GST.
Current position
Control and evidence map
| # | Control / evidence requirement | |
|---|---|---|
| 1 | Check whether the early-payment discount formula existed in the contract, PO, invoice terms or scheme before/at supply. | |
| 2 | Link the actual discount to the specific invoice(s) and payment timing that triggered it. | |
| 3 | Determine whether the recipient must reverse ITC attributable to the discount for section 15(3) treatment. | |
| 4 | Use a statutory GST credit note only where the conditions for tax/value reduction are met; otherwise use a commercial credit note without reducing output tax. | |
| 5 | Reconcile the credit note, customer ledger, GSTR reporting and ITC communication before period close. | |
Worked example
An invoice states '2% discount if paid within 10 days'. The customer pays on day 7. Because the discount condition was established at supply, the supplier can test section 15(3) conditions, link the discount to that invoice and ensure corresponding recipient ITC reversal. If the 2% was offered only after day 7 as a discretionary concession, the GST result is different.
Common mistakes
- Using Circular 105 after its ab-initio withdrawal.
- Treating every post-invoice discount as eligible for GST value reduction.
- Failing to link the discount to specific invoices.
- Reducing supplier tax without addressing recipient ITC reversal where section 15(3) requires it.
Frequently asked questions
Can a discount given after invoice reduce GST?
Yes only when the statutory conditions, including prior agreement and invoice linkage, are satisfied.
What if the discount was not pre-agreed?
A commercial credit note may be possible, but output tax reduction is not available merely because accounting revenue is reduced.
Is Circular 105 still valid?
No. CBIC withdrew Circular 105/24/2019-GST ab initio through Circular 112/31/2019-GST.
Official sources
- Central Board of Indirect Taxes and Customs - Central Goods and Services Tax Act, 2017 (CGST Act, 2017; current consolidated framework)
- Central Board of Indirect Taxes and Customs - Circular No. 92/11/2019-GST - sales promotion schemes and discounts (92/11/2019-GST; 2019-03-07)
- Central Board of Indirect Taxes and Customs - Circular No. 112/31/2019-GST - withdrawal of Circular 105/24/2019-GST ab initio (112/31/2019-GST; 2019-10-03)
Disclaimer
Educational and professional reference only; confirm the current law, rates and the facts of your case before relying on this page.