Credit Notes and Debit Notes in Export: Correcting an Invoice
Credit notes and debit notes in export: when to issue each, required details, worked examples, and the effect on customs, VAT, export proceeds and L/Cs.
Key takeaways
- A credit note reduces what the buyer owes on an invoice; a debit note increases it.
- Never alter or reissue an invoice already sent: correct it with a note that refers to it.
- Each note must state its own number and date, the original invoice, the reason and the amount, in the invoice currency.
- A buyer's 'debit note' is a claim, not a correction, until you accept it.
- Corrections can affect customs value, tax records and, where exchange controls apply, the export proceeds you must justify to your bank.
Even well-run export departments issue invoices that later prove wrong: the buyer receives fewer cartons than invoiced, a pallet arrives damaged, the contract price for one item was different, the price-revision clause adds a surcharge, or the buyer agreed to pay storage it caused. The invoice cannot simply be edited — it has been sent, booked, used for customs and perhaps presented to a bank. The correction is made with a credit note or a debit note.
This lesson explains when to use each, what they must contain, how to handle a buyer's own debit note, and what corrections mean for customs, tax, exchange-control reporting and letters of credit. Two worked examples show the figures.
What is a credit note, and what is a debit note?
| Credit note | Debit note | |
|---|---|---|
| Issued by | The seller | The seller (supplementary charge) — or the buyer (claim) |
| Effect | Reduces the amount owed by the buyer | Increases the amount owed by the buyer (if from the seller) |
| Typical reasons | Return, short shipment, quality claim, overcharge, rebate, cancellation | Undercharge, agreed extra costs, price revision, late-payment interest |
| Accounting | Reverses part or all of the sale | Adds revenue or a receivable |
Both are correction documents attached to an original commercial invoice. They are not new sales.
When to issue a credit note or a debit note
When should an exporter issue a credit note?
- Short shipment: fewer units shipped than invoiced, or a bill of lading quantity lower than the invoice.
- Quality or damage claims for which the seller is responsible and agrees to compensate.
- Returns of goods to the seller.
- Price errors where the invoice overstated the price agreed.
- Volume or loyalty rebates agreed in a distribution contract and earned over a period.
- Cancellation of an invoice issued by mistake (credit note for 100%).
When should an exporter issue a debit note?
- Undercharge: the invoice understated the price, quantity or a charge.
- Agreed additional costs borne by the seller on the buyer's behalf: extra storage because the buyer's carrier was late under FCA, a change of destination requested by the buyer, testing ordered by the buyer.
- Price revision under a clause linking the price to a raw-material index.
- Late-payment interest provided for in the contract.
Some companies prefer to issue a supplementary invoice instead of a debit note; check which form your tax rules and your buyer's accounting expect.
The buyer's debit note: a claim, not a correction
Many importers send their suppliers a 'debit note' to claim money: for damaged goods, late delivery penalties, missing labels or marketing contributions. It is their demand. Do not book it as a reduction of your receivable until you have examined the claim against the contract (claims period, liability caps, inspection evidence), agreed an amount and issued your own credit note. If you disagree, answer in writing within the contract's deadline.
What a credit or debit note must contain
| Field | Status | Explanation |
|---|---|---|
| Title | Mandatory | 'Credit note' or 'Debit note' |
| Number and date | Mandatory | Its own sequential number, separate from or within the invoice sequence as your tax rules require |
| Seller and buyer | Mandatory | As on the original invoice |
| Original invoice number and date | Mandatory | The invoice being corrected |
| Reason | Mandatory | Short and factual: 'Quality claim agreed on 12 May 2026, 120 cartons' |
| Lines corrected | Mandatory | Quantities, unit prices, amounts |
| Amount and currency | Mandatory | Same currency as the invoice; in words if your format uses them |
| Tax treatment | Mandatory where relevant | E.g. export exempt, same as the original invoice |
| Settlement | Recommended | Refund, deduction from a future invoice, or payment due date |
| Supporting references | Recommended | Claim number, survey report, buyer's agreement |
| Signature | Recommended | Authorised signatory and stamp |
Worked examples
A credit note for a quality claim
The Béjaïa producer from the commercial invoice lesson invoiced 15,840 litres of extra virgin olive oil to Marseille at EUR 6.20 per litre (EUR 98,208.00). The buyer's laboratory finds that two pallets — 120 cartons, 1,440 litres — exceed the acidity limit. After a joint analysis confirms it, the parties agree that the buyer will sell those bottles as virgin olive oil and the seller will refund the price difference of EUR 2.00 per litre.
| Credit note CN-2026-033-01, 20 May 2026 | |
|---|---|
| Original invoice | INV-2026-033 of 9 March 2026 |
| Reason | Quality claim agreed 18 May 2026, acidity above 0.5% on 1,440 litres |
| Line | 1,440 litres x EUR 2.00 price reduction |
| Amount | EUR 2,880.00 |
| Settlement | Deducted from the next invoice |
A debit note for an undercharge
The tile manufacturer's invoice INV-2026-118 to Dakar showed 1,200 boxes at EUR 32.00. The contract priced 200 of those boxes, a premium design, at EUR 35.00. The buyer agrees to the correction.
| Debit note DN-2026-118-01, 5 May 2026 | |
|---|---|
| Original invoice | INV-2026-118 of 22 April 2026 |
| Reason | Contract price for design 'Atlas' is EUR 35.00, invoiced at EUR 32.00 |
| Line | 200 boxes x EUR 3.00 |
| Amount | EUR 600.00 |
| Settlement | Payable by transfer within 30 days |
Effects on customs, tax, exchange control and letters of credit
Customs. The import customs value is generally based on the price paid or payable for the goods when they are declared. Whether a later reduction changes it depends on the importing country's rules: many systems only allow a refund or an adjustment in defined cases, such as defective goods under a pre-agreed warranty. A later increase may require the importer to amend its declaration and pay additional duty. On the export side, some customs administrations expect the export declaration to be corrected when the final value differs. See customs valuation.
Tax and accounting. Notes are accounting documents: number them sequentially, keep them with the original invoice and record them in the same period. For an exempt export sale, the note follows the same exempt treatment.
Exchange control. Where export proceeds must be repatriated and reconciled with a bank domiciliation file, as in Algeria, the bank expects the amount received to match the amount domiciled. A credit note reducing the amount must be supported by evidence (the claim, the agreement, a survey report) and declared to the bank in the required way. Check the current rules with your bank; the framework is described in repatriating export proceeds.
Letters of credit and collections. A presentation under a credit is examined as presented; you cannot attach a credit note to reduce it. If a price reduction is agreed after shipment, settle it outside the credit by a refund or a deduction on a later shipment. Under a collection, a reduction agreed before the buyer pays requires new instructions from you to the banks, and usually a new draft.
Common mistakes
- Editing and resending an invoice instead of issuing a note.
- A credit note that does not quote the original invoice number.
- Issuing a credit note in a different currency from the invoice.
- Booking a buyer's debit note as accepted without examining the claim.
- Forgetting to inform the domiciliation bank of a reduction, then facing a repatriation shortfall.
- Using a credit note to adjust a letter of credit presentation.
Putting it into practice
On Incoforms, a credit note is generated from the shipment and its invoice data: the original invoice reference, parties and currency come from the shipment, you enter the reason and the amounts to credit, and the note is numbered from the shipment reference. It carries your logo, signature and stamp, can show the amount in words in English and French, and is kept with the shipment's other documents and its financial follow-up.
Frequently asked questions
What is the difference between a credit note and a debit note?
A credit note is issued by the seller to reduce the amount due on an invoice, for example after a return, a quality claim or an overcharge. A debit note is issued to increase the amount due, for example after an undercharge or for agreed additional costs. Buyers also use the term 'debit note' for their own claims against a supplier.
Can I cancel an export invoice and issue a new one?
Once an invoice has been sent, recorded or used for customs, you should not cancel or reissue it with the same number. Issue a credit note for the full amount referring to it, and a new invoice if needed. This keeps the trail that tax authorities, customs and auditors expect.
Does a credit note need to reference the original invoice?
Yes. A credit or debit note must identify the invoice it corrects, by number and date, and explain the reason and amount. Under EU VAT rules, for example, a document that amends and specifically refers to the initial invoice is treated as an invoice.
Can a credit note be used under a letter of credit?
Not to reduce a presentation. Banks examine the invoice and documents presented against the credit; a later price reduction is settled between buyer and seller outside the credit, for example by a credit note deducted from a future shipment or a refund.