Credit Notes vs Write-Offs: Data and Accounting Impact
? 5 min read 8 questions answered
Credit notes and write-offs both reduce what shows as owed to you, but they mean very different things and land in different places in your data, your reports and your books. This article explains the difference, when to use each, and what each does to your debtors book, your collection metrics and your financial statements.
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In this article
| → The basics (Q1 to Q3) | → Data impact (Q4 and Q5) |
| → Accounting and tax impact (Q6 and Q7) | → Common mistakes (Q8) |
The Basics
Q1: What is the difference between a credit note and a write-off?
A credit note is a formal document that reduces or cancels an invoice you issued, because the amount billed was wrong or is no longer due (for example goods returned, a pricing error or an agreed discount). A write-off is different: the invoice was valid and the customer still owes it, but you have decided you are unlikely to ever collect it.
ⓘ Tip: Ask one question: was the invoice correct? If it was not, it is a credit note. If it was correct but will not be paid, it is a write-off.
Q2: When should I issue a credit note, and when should I write off?
Issue a credit note when the sale itself changes. Write off only when a correct debt has become irrecoverable after you have made reasonable efforts to collect it.
What to do:
- Issue a credit note for returns, pricing or quantity errors, duplicate invoices, agreed settlement discounts and resolved disputes.
- Write off when the customer has been liquidated or cannot be traced, or when collection has failed and the cost of pursuing the debt is more than the debt is worth.
- Get the correct internal approval for both, and keep the supporting evidence (the dispute email, the collection history or the liquidation notice).
Q3: Does a write-off mean the customer no longer owes me the money?
No. A write-off is an internal accounting decision to stop treating the amount as an asset you expect to receive. Unless you formally release the customer or settle the debt, the customer still legally owes it, and you can still collect it later. A credit note, by contrast, removes the amount from what the customer owes.
⚠ Note: If the customer pays after you have written the debt off, record it as a recovery of a bad debt. Do not reinstate the old invoice or simply reduce the write-off.
Data Impact
Q4: How does each one affect my debtors book and ageing?
Both remove balances from your ageing, but for different reasons. A credit note corrects the invoice, so the balance falls and the sale is reduced with it. A write-off removes the whole balance from the debtors book, usually from the oldest ageing bucket, so your ageing report looks healthier even though no cash came in.
What to do:
- Review your ageing before and after month-end write-offs so you can see what was removed.
- Keep a separate record of written-off balances by customer. Once they leave the ageing they are easy to forget.
- Check that credit notes are linked to the original invoice, so the correct bucket is reduced.
Q5: How do they affect DSO and my other collection metrics?
A write-off lowers receivables without lowering sales, so DSO improves on paper without any real improvement in collections. A credit note reduces both receivables and sales, so the effect on DSO is much smaller. If write-offs are not tracked, a good DSO can hide a growing bad debt problem.
What to do:
- Report DSO together with the bad debt rate (write-offs as a percentage of credit sales).
- Look at DSO both with and without write-offs when you compare periods.
- Track credit notes as a percentage of sales. A rising figure points to billing or dispute problems, not credit risk.
Accounting and Tax Impact
Q6: How does each one show up in the financial statements?
A credit note reduces revenue (as a sales return or allowance) and reduces debtors by the same amount. A write-off does not change revenue. It is recognised as a bad debt expense, or it is charged against your allowance for expected credit losses if you carry one. Profit is lower either way, but the loss is reported on a different line, and that is what the people reading your statements will look at.
ⓘ Tip: If you carry an allowance for doubtful debts or expected credit losses, a write-off uses up that allowance and does not hit profit a second time. Your accountant can confirm how this works in your books.
Q7: What are the VAT and income tax implications in South Africa?
For a credit note, a VAT vendor must issue a valid credit note and adjust output tax in the tax period it relates to. For a write-off, VAT relief is not automatic. It generally depends on the debt being written off as irrecoverable in your books, output tax having been accounted for on the original supply, and the other requirements of the VAT Act being met. Income tax relief for a bad debt generally requires that the amount was included in your income and has become irrecoverable.
⚠ Note: This is general information and not tax advice. Rules and conditions change, so confirm the treatment of each case with your tax practitioner or SARS before you rely on it.
Common Mistakes
Q8: What mistakes should I avoid?
The most common mistake is using a credit note to clear an unpaid invoice that is really a bad debt. It makes revenue and VAT look lower than they should be, hides the true level of bad debt and can raise questions in an audit.
What to do:
- Do not issue credit notes to “tidy up” old debt that the customer never disputed.
- Do not write off an invoice that is still in dispute. Resolve the dispute first, then credit note it or collect it.
- Do not write off without a record of your collection attempts and an approval.
- After a write-off, flag the customer and review their credit limit, so new sales are not made on credit by mistake.
- Record any later payment as a recovery of a bad debt.
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