Glossary · Invoicing & quotes

Credit note: correct without erasing

5 min read · Updated on 3 July 2026

Definition A credit note (or credit memo) is the accounting document that cancels or reduces an already issued invoice: billing error, goods returned, retroactive discount, or service cancellation. Absolute golden rule: an issued invoice is NEVER modified or deleted—it is corrected by a credit note. This principle ensures the immutability of sequential invoice numbering.

The full entry

The essentials in brief

An invoice is never deleted: it is cancelled or corrected with a credit note. Even if issued 5 minutes ago.
A credit note is a "negative invoice": same mandatory details, separate chronological numbering, reference to the original invoice.
4 use cases: billing error, product return, post-sale discount/commercial gesture, cancellation.
VAT recovered by the issuer: the credit note adjusts excess VAT collected (if correctly stated).
Credit notes are settled: by refund or offset against a future invoice — at the customer’s choice, unless agreed otherwise.

I Use cases

When to issue a credit note (and when it’s the wrong tool)

The four main use cases :

Billing error : wrong price, wrong quantity, wrong customer, incorrect VAT, missing details. Two approaches: partial credit note (correcting the difference) or full credit note + new invoice (clearer—recommended if the error affects VAT or customer identity).

Goods returned : the customer returns all or part of the order. The credit note matches the returned quantities, valued at the invoiced price (including discounts).

Retroactive discount : commercial gesture, negotiated quality penalty, year-end rebate (RFA). The credit note formalises the agreed terms—never rely on a “verbal discount” that leaves the original invoice permanently unreconciled.

Full cancellation : the service will not take place, the sale is voided. Full credit note referencing the cancelled invoice.

What a credit note is NOT :

A tool for managing unpaid invoices: a non-paying customer remains a receivable to be collected (follow-up), not an invoice to “cancel”—cancelling a genuine receivable to clean up aged balances is an accounting (and tax) irregularity (you remove taxable revenue without justification).
A quote corrector: a mispriced quote is renegotiated before invoicing, not after via a credit note “for appearances’ sake”.

✓ Best practices

Explicitly reference the original invoice (number and date) on every credit note
Number credit notes chronologically (dedicated series AV-2026-xxxx or shared series)
Use a full credit note + new invoice when VAT or the customer changes
Have the customer sign/acknowledge receipt of the credit note (it conditions THEIR VAT adjustment)

✗ Prohibited practices

Modify or delete an already issued invoice, even if only 5 minutes old
Issue a credit note to "erase" a bad debt and clean the balance
Backdate a credit note to the previous financial year after closing
Offset an error with a disguised discount on the next invoice

II In practice

Details, VAT and credit note settlement

Mandatory details : a credit note includes all the same mandatory details as an invoice (identities, quantities, prices, VAT, etc.), plus: the title “CREDIT NOTE” (or “credit memo”), a reference to the original invoice, and the reason. Amounts are shown as negative or prefixed with “credit for”.

VAT treatment for the issuer : a credit note lets you reclaim over-collected VAT—provided it includes the correct statement. Two regimes apply:

Credit note “net of tax” with VAT reclaim: state the corresponding VAT on the credit note; offset the VAT against your next VAT return (CA3).
Net discount with no VAT impact (rare, by election): state “net discount, Article 267-II-1° of the French Tax Code (CGI)”.

For VAT-registered customers: symmetrically, they must repay the VAT they previously deducted on the cancelled portion. This is why the credit note must be formally delivered—a “we agreed over the phone” leaves both accounting systems unreconciled.

Settlement : the credit note creates a debt from the issuer to the customer. This is settled by refund (bank transfer) or by offset against future invoices. Key point at the end of a commercial relationship: an unrefunded credit note for a customer who will not order again is an outstanding debt—settle it, or it will resurface during the first audit or the customer’s first follow-up.

With e-invoicing from 2026 : credit notes follow the same process as invoices (structured formats, platforms, lifecycle statuses). The credit note ↔ original invoice link becomes structured, controlled data—“orphan” credit notes without a reference will be automatically rejected. Another reason to adopt good habits now.

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Golden rule

The test of healthy invoicing: zero gaps in numbering, zero modified invoices, one credit note for every correction. This is exactly what an auditor reconstructs first—and what invoicing software guarantees effortlessly.

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III Frequently asked questions

Answers to the questions we get asked most.

Can I issue a credit note for an invoice from the previous financial year?

Yes — a credit note is dated the day it is issued (never backdated), even if it corrects an invoice from a closed accounting period. For accounting purposes, it affects the current period; if the amount is significant and the error is old, your accountant will decide between correcting it as it arises or treating it as an expense/income for the previous period. For VAT purposes, the adjustment follows the credit note date. What is prohibited: reopening last year’s numbering or backdating to "place" the credit note in the correct period.

My client demands a credit note for a discount I never agreed to: what should I do?

Do not issue it. A credit note without a valid reason (such as an automatic deduction by large accounts or unilateral non-contractual logistics penalties) is both a direct loss and a practice that must be documented: respond in writing, requesting the contractual basis for the deduction. If the client has already deducted the amount from payment, the difference remains a receivable — pursue it as such. Repeated automatic deductions by major retailers may constitute restrictive practices (Art. L.442-1 French Commercial Code) and should be reported to the DGCCRF.

Can a credit note be partial and only adjust the VAT?

Yes: if the error only concerns the VAT rate (e.g., 20% charged instead of 10%), the credit note can correct just the tax difference, with an explanation of the adjustment. In practice, many software systems (and accountants) prefer issuing a full credit note followed by a new invoice at the correct rate: this may seem heavier, but each document remains self-contained — invaluable when explaining the sequence to an auditor three years later.

When to issue a credit note (and when it’s the wrong tool)

Details, VAT and credit note settlement

What if a tool handled this for you?

Answers to the questions we get asked most.

Make Orizen better, one click is enough.