Invoice Correction: How to Correctly Correct Faulty Invoices in a GoBD-Compliant Manner

A typo in the address, a wrong tax rate, or a forgotten discount - mistakes on invoices happen to the best. But simply correct and overwrite? That's strictly prohibited according to GoBD. Here you'll learn how to correct invoices in a legally secure manner.

The basic principle: No invoice may be deleted

The GoBD (Principles for the proper management and storage of books, records and documents in electronic form) are clear: Every business document must be traceable. This means:

• No deletion of invoices
• No retrospective changes without documentation
• Complete retention of all versions

Anyone who violates this risks serious problems during an audit - up to the estimation of tax bases.

Which errors require which correction?

Not every error requires an elaborate correction. Here's the overview:

Small formal errors (before sending)

Have you discovered an error before the invoice reached the customer? Then you can simply create a corrected version - but the faulty version must be documented.

Substantial errors (after sending)

Has the customer already received the invoice? Then you need a formal correction:

The cancellation invoice (invoice cancellation)

A cancellation invoice completely reverses the original invoice. It's needed for:

• Completely wrong invoices
• Wrong tax rates
• Wrong customer information
• Cancellation of the entire order

Structure of a cancellation invoice

CANCELLATION INVOICE No. 2025-092

We hereby completely cancel our invoice No. 2025-087 from 15.10.2025.

Original invoice amount:
Net:                1,500.00 €
plus 19% VAT:         285.00 €
Gross:              1,785.00 €

Cancellation amount:
Net:               -1,500.00 €
plus 19% VAT:       -285.00 €
Gross:             -1,785.00 €

Reason for cancellation: Wrong tax rate calculated

Important elements of the cancellation invoice

1. Own invoice number - The cancellation invoice is an independent document
2. Reference to original invoice - Number and date of the canceled invoice
3. Negative amounts - All values as minus
4. Cancellation reason - Brief explanation of why it's being canceled

The credit note (downward correction)

A credit note reduces the invoice amount. Typical occasions:

• Retrospective discount
• Complaint/defect reduction
• Partial delivery not made
• Return

Structure of a credit note

CREDIT NOTE No. 2025-093

Reference: Invoice No. 2025-087 from 15.10.2025

We grant you the following credit:

Price reduction complaint:    -200.00 €
plus 19% VAT:                  -38.00 €
Credit amount:                -238.00 €

The amount will be offset against open claims
or transferred to your account.

Important: A credit note in the VAT sense is something different from a "credit note" in the sense of an invoice issued by the customer (settlement credit note). Here we're talking about the correction credit note.

The corrected invoice

For formal errors that don't affect tax liability, a corrected invoice is often sufficient:

CORRECTED INVOICE No. 2025-087-K1

This invoice replaces invoice No. 2025-087 from 15.10.2025.
Correction: Invoice address updated

[Rest of the corrected invoice]

The corrected invoice:

• Can have the same number (with addition like -K1 or -corr)
• Must refer to the original invoice
• Must state the correction reason

VAT consequences

Invoice corrections have tax implications:

With cancellation invoice

• The already reported VAT must be corrected
• In the next VAT advance return as minus amount

With credit note

• The VAT of the credit note reduces the tax burden
• Report in the next advance return

At the customer (input tax)

• The customer must correct their input tax accordingly
• Important: Send correction documents promptly

Avoiding errors in invoice correction

Error 1: Delete original

Deleting or overwriting invoices is contrary to GoBD. Even if you create a correction, the original invoice must be retained.

Error 2: No documentation

Why was it corrected? This information must be traceable for the audit.

Error 3: Wrong invoice type

A credit note is not a cancellation invoice and vice versa. Choose the appropriate correction type.

Error 4: Forget VAT

Don't forget to consider the tax corrections in your advance return.

Error 5: Not informing customers

The customer needs the correction documents for their accounting. Send them promptly.

Best practices

1. Careful review before sending

The fewer corrections needed, the better. Review invoices before sending.

2. Clear designation

"CANCELLATION INVOICE," "CREDIT NOTE," or "CORRECTED INVOICE" belongs prominently in the subject.

3. Complete documentation

Record who, when, and why initiated which correction.

4. Prompt correction

The faster you correct, the less confusion for the customer and in accounting.

5. Audit-proof archiving

All versions (original and corrections) must be kept for 10 years.

Conclusion

Invoice corrections are no mystery - if you know the rules. The most important thing: Never delete, always document, choose the right correction type. With good accounting software, you keep track and create GoBD-compliant corrections with a few clicks.

Clever Invoice makes invoice corrections easy: Cancellation and credit note invoices are automatically linked to the original invoice, all versions are retained, and VAT is calculated correctly.