Credit Note explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
A credit note under section 34 lets a supplier reduce the tax on an earlier invoice, for example after a sales return or a discount. Since 1 October 2025 there is a new catch for sales to registered buyers: the supplier's reduction in output tax is allowed only if the buyer has reversed the matching input tax credit. This article explains the rule, the time limit, and how to sequence a credit note so that neither side is caught out.
Under section 34(1), a supplier may issue one or more credit notes for supplies made in a financial year where the invoice value or tax is too high, goods are returned, or goods or services are deficient. Under section 34(2), the credit note must be declared in the return for the month of issue, not later than 30 November after the financial year or the annual return date, whichever is earlier. The supplier gets no reduction in output tax if a registered buyer has not reversed the ITC attributable to it, or, for other buyers, if the tax incidence has been passed on.
What changed with the Finance Act 2025
Before 1 October 2025, the supplier had to show that the incidence of tax and interest had not been passed on to anyone else. The Finance Act 2025 replaced that for registered buyers with an objective test, effective from 1 October 2025 (Notification 16/2025-CT). Now the proviso to section 34(2) bars the reduction in two cases:
- the ITC attributable to the credit note, if availed, has not been reversed by the recipient, where the recipient is a registered person; or
- the incidence of tax on the supply has been passed on to any other person, in other cases.
The second test continues to apply to unregistered buyers, so B2C sales are still judged by unjust enrichment. The Background Material also flags a practical worry: a supplier's right now depends on what an independent buyer does. A valid credit note for a genuine return can leave the supplier unable to reduce liability because the buyer failed to reverse credit. This may give rise to disputes.
Conditions at a glance
| Point | Rule |
|---|---|
| Who issues | The supplier who issued the tax invoice. A "credit note" issued by a buyer is not a GST document |
| Grounds | Excess taxable value or tax; goods returned; deficiency in goods or services; discount under section 15(3)(b) |
| Covers | One or more invoices of the same financial year. Two financial years cannot be bunched in one credit note |
| Linked to | Specific original tax invoice or invoices |
| Declared in | Return for the month of issue |
| Last date to declare | Earlier of 30 November after the financial year and the date of the annual return |
| Particulars | As in Rule 53(1A) |
| Output tax reduction | Only if the registered buyer has reversed ITC, or no pass-on in other cases |
The discount ground was added to section 34(1) by the Finance Act 2026 and takes effect from a date to be notified. Until it is notified, the added words are not in force. If you are unsure how an old credit note was reported, our GST error correction team can trace it. A discount qualifies under section 15(3)(b) only if agreed before or at the time of supply. For the particulars and format, see Rule 53(1A).
Worked example
Illustration: a supplier sells goods worth Rs. 1,00,000 plus IGST of Rs. 18,000 to a registered buyer in August 2026. In October 2026 the buyer returns half the goods.
- The supplier issues a credit note in October 2026 for taxable value Rs. 50,000 and IGST Rs. 9,000, quoting the invoice number.
- The supplier declares it in the October return.
- He can reduce output tax by Rs. 9,000 only if the buyer has reversed Rs. 9,000 of ITC attributable to it.
- If the buyer has not reversed it, the supplier's liability is not reduced, even though the credit note is valid.
For supplies of FY 2026-27, the last date to declare a credit note is the earlier of 30 November 2027 and the date the annual return is furnished. The date is always counted from the year of the original supply, not the year of the credit note.
The buyer's side
On declaring the credit note, the recipient must reduce ITC if it was taken on the original invoice. Under the Invoice Management System, rejected credit notes increase the supplier's liability in the next tax period. From October 2025 the recipient can mark original and upward-amended credit notes as pending for up to one tax period, after which they are deemed accepted. On accepting a credit note the recipient can also declare the exact ITC to reverse, which helps where ITC was only partly taken or never taken. See the IMS article.
After the deadline
A credit note is not barred from being issued after 30 November, but tax adjustment is. The Background Material, citing Circular 72/46/2018-GST, says a credit note issued after the section 34(2) time limit need not be declared on the portal because tax liability cannot be adjusted. Such a "financial" credit note settles the commercial position but gives no GST relief, and the buyer may have to reverse ITC. A credit note is also not a substitute for an invoice revision: see tax invoice rules. For debit notes the position is different: there is no time limit to declare them.
Circular 137/07/2020-GST confirms that for goods returned under a tax invoice, or an advance on an event that is cancelled after an invoice, the supplier issues a credit note and adjusts tax in the return without a separate refund claim. Where there is no output liability to adjust against, a refund claim in RFD-01 is available.
Common errors to avoid
- Issuing one credit note across invoices of two financial years.
- Not quoting the original invoice.
- Treating a bad-debt write-off or trade settlement as a section 34 credit note when it does not fit the listed grounds.
- Declaring the credit note in the wrong month, or after 30 November.
- Charging 18% instead of a lower rate and issuing a credit note for the whole invoice when only the excess tax is refundable. The Background Material confirms the credit note can be raised for the excess tax alone.
Need help with credit notes and corrections?
When credit notes are issued but not declared, or declared without the buyer's reversal, the difference surfaces in return mismatches and notices. Our team can trace credit notes against invoices and returns and help with corrections through our GST error correction service. You can also check the buyer-side impact on credit with ITC reconciliation advisory.
Key takeaways
- Credit notes are issued only by the supplier and must link to specific invoices of one financial year.
- Declare by the earlier of 30 November after the year or the annual return date.
- From 1 October 2025, output tax reduction for a registered buyer depends on the buyer's ITC reversal.
- For unregistered buyers the pass-on test remains.
- The discount ground in section 34(1) is effective only from a date to be notified.
Read next
- Invoice Management System: accept, reject, pending
- Tax invoice contents and time limit: Rules 46 and 47
- Bill of supply, receipt voucher and refund voucher
- Debit note and credit note under GST: when and how to issue
Disclaimer: Positions stated as on 30 September 2026, based on the CGST and IGST Acts and Rules as amended, the Finance Act 2026, and the ICAI Background Material on GST (14th Edition, July 2026). Verify current notifications before acting.