In this article
Key takeaways
- Link every reduction or cancellation to the original invoice.
- Determine the unpaid or overpaid balance before allocating money.
- Record a refund as settlement of the resulting credit.
- Distinguish a commercial credit note from statutory self-billing.
Identify what the document actually does
| Document or event | Accounting question |
|---|---|
| Partial invoice reduction | By how much did the agreed consideration change? |
| Full cancellation | Is the entire original invoice being reversed? |
| Replacement invoice | Has the superseded invoice been dealt with, so both are not counted? |
| Refund | Which customer or supplier credit does the money settle? |
| Self-billed invoice | Is the customer issuing the invoice on the supplier’s behalf under an agreed arrangement? |
In German business language, “Gutschrift” is often used for a reduction. Under §14 UStG, it also has a specific meaning: an invoice issued by the recipient of the service under a prior agreement. Read the underlying event before choosing the treatment.
Example 1: reduce a partly paid invoice
A supplier invoice is €1,200. The customer has paid €400. The supplier then issues a valid reduction of €200 for returned items.
This example follows gross settlement amounts only:
| Step | Amount still payable |
|---|---|
| Original invoice | €1,200 |
| First payment: €400 | €800 |
| Invoice reduction: €200 | €600 |
| Final payment: €600 | €0 |
The €200 correction reduces the purchase and payable under the appropriate accounting treatment. The final €600 payment clears what remains. There is no €200 refund because that amount was never overpaid.
A common mistake is to leave the invoice at €1,200, treat the €200 as unrelated income and continue showing a supplier balance. The connected calculation exposes the error: €1,200 − €400 − €200 − €600 = €0.
Example 2: refund an invoice already paid
A domestic service invoice of €1,190 consists of €1,000 net and €190 VAT. The customer pays in full. Later, the parties agree a reduction of €238 gross: €200 net and €38 VAT.
Assume ordinary taxable treatment and full input-VAT entitlement on the customer side. Once the reduction is properly recognised, the customer has a €238 supplier credit. On the supplier’s books, €238 is owed back to the customer.
The supplier refunds €238:
- Original net sale after correction: €800.
- VAT on that corrected sale: €152.
- Cash retained by the supplier: €952.
- Customer balance after refund: €0.
The refund itself does not reduce revenue a second time. The reduction document already produced that effect. Similarly, the customer’s refund receipt settles the supplier credit rather than creating a new sale.
Keep the refund obligation separate from VAT timing. In this example, the invoice was already paid in full: the €38 VAT and input-VAT adjustments follow the actual repayment, not merely the agreement to reduce the price. A credit note in September followed by a refund in October therefore gives an October VAT adjustment. This follows §17 UStG and section 17.1(2) of the BMF VAT guidance. Other correction cases need their own timing assessment.
Follow a credit carried into the next invoice
A supplier may apply a €238 credit against a new €595 invoice. If that offset is documented, the remaining payment is €357. Preserve the relationship between the old correction, the new invoice and the €357 bank payment.
Do not wait for a refund that the parties have already replaced with an offset. Equally, do not assume every credit will be offset merely because another invoice exists.
A short reconciliation before closing the case
Check the original invoice reference, reason and amount of the correction. Then compare three things: the corrected invoice balance, actual payments and any refund or documented offset.
A zero supplier balance is not enough if the wrong invoices were cleared. The individual items should tell the same story. For a replacement invoice, confirm that the original no longer contributes a second purchase or sale.
Hans can connect correction documents, original invoices and payment settlements in the bookkeeping workflow. If a correction arrives after close or export, use a documented correction route and check the receiving system as well. See corrections after month-end close and open-item reconciliation.
Sources
Sources were checked on 06 October 2026. This article provides orientation and is not tax, legal, or accounting advice.
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