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Key takeaways
- A credit note is issued by the seller to reduce an earlier invoice, for returns, price changes, discounts or errors.
- It must quote the original invoice, state the reason and show the tax it reverses.
- In India, a supplier's credit note under section 34(2) of the CGST Act must be issued by 30 September after the financial year ends or the annual return date, whichever is earlier, to cut output tax.
- Do not delete or overwrite an issued invoice. Issue a credit note and keep both.
Free PDF and Excel: Credit note template and register. Get it below
What a credit note is
A credit note is a document a seller issues to cut the amount a buyer owes on an earlier invoice. It records returns, price corrections, rebates or billing errors.
It works like a negative invoice with a paper trail. The buyer's accounts payable team matches it to the original bill, reduces the payable and, if the buyer had already paid, either takes the balance off the next payment or asks for a refund.
A caterer bills an office 40 lunches at 12.50 each, a total of 500.00. The office had ordered 36. The caterer agrees the mistake and issues credit note CN-0031 for 4 lunches, 50.00, citing the invoice number and the reason.
The office's finance team reduces the payable to 450.00 and files the credit note with the original invoice so an auditor can see why the amount changed.
Fields on a credit note
| Field | What goes in it | Why it matters |
|---|---|---|
| Title and number | Credit Note, with a sequential number. | Gaps in the sequence are an audit flag. |
| Date issued | The day the note is created. | Decides the tax period it is reported in. |
| Seller and buyer | Names, addresses, tax identification numbers. | Both sides need them to adjust tax. |
| Original invoice | Number and date. | The link that makes the note usable. |
| Reason | Returned goods, price correction, discount, duplicate billing. | Specific wording speeds approval. |
| Lines and amounts | What is being credited, quantity, rate and total. | Must reconcile to the invoice. |
| Tax adjustment | Tax credited at the rate of the original invoice. | Keeps the tax returns of both sides right. |
| Settlement | Offset against next invoice, or refund by bank transfer. | Avoids a credit sitting unclaimed. |
Free PDF and Excel
Credit note template and register
A credit note layout, reason codes and a register to track every credit until it is settled.
- Credit note layout
- Reason codes
- Pre-issue checklist
- Excel register with open-credit total
When to issue one
- Goods are returned or rejected after the invoice.
- A price or discount was agreed after billing.
- The invoice was issued for more than the order.
- A service was not delivered in full.
- An invoice was duplicated.
Credit notes under Indian GST
Under section 34(2) of the CGST Act a registered supplier may issue a credit note to the recipient. It has to be raised by 30 September following the end of the financial year of the supply, or by the date the supplier files the annual return, whichever is earlier. The supplier can reduce output tax only if the tax was not passed on to the recipient, or if the recipient reverses the matching input credit. Rule 53 lists the content, including a sequential number of up to 16 characters, the original invoice number and date, the taxable value and the tax. The full walk-through is in the GST credit note guide.
Last checked: 19 October 2026. Indian points checked against a published summary of section 34 and rule 53. Other countries have their own credit note rules for sales tax and VAT. Ask your adviser.
Where credit notes go wrong
- Issuing after the deadline and losing the tax adjustment.
- Crediting without quoting the invoice.
- Offsetting a credit against the wrong customer account.
- Letting unclaimed credits sit on the ledger for years.
- Refunding cash when the contract says credit only.
- Original invoice number and date are quoted.
- Reason is plain and specific.
- Tax is reversed at the original rate.
- Number is in sequence.
- Signed or digitally approved.
- Buyer was told how the credit will be settled.
Frequently asked questions
What is the difference between a credit note and a refund?
A credit note is the document that reduces the debt. A refund is the cash returned. You can issue a credit note and settle it against the next invoice with no cash moving.
Who issues a credit note?
The seller. A buyer who wants a reduction sends a debit note and asks the seller to reply with a credit note.
Can I issue a credit note after the buyer has paid?
Yes. The buyer then holds a credit balance, which can be offset or refunded.
Is a credit note the same as a credit memo?
They do the same job. Credit memo is the more common term in the United States.
Does a credit note have to carry tax?
If the original invoice carried tax, the credit note normally reverses it. Zero-rated and exempt sales have no tax to reverse.