Changes to billing details

If you update your billing details in your account, note that changes do not apply retroactively to invoices that have already been issued and reported to the AEAT (Spanish Tax Agency).

Your new details will appear from the next billing period onward.

This means you can’t amend an invoice that’s already been issued, except in very specific cases allowed by tax regulations.

🧾 When a corrective invoice can be issued

You can only make corrections when there are material or formal errors, for example:

• Incorrect amount, taxable base, or tax rate.
• Minor mistake in the address or business name.
• Wrong VAT calculation.

In these cases, a corrective invoice is issued, stating the reason and referencing the original invoice.

🚫 When an invoice cannot be amended

You can’t amend an invoice if what you need to change is:

• The invoice holder.
• The business name.
• The NIF or VAT number.

These cases are considered a new transaction for tax purposes, even if the companies belong to the same group.

Therefore, the change will only apply to future invoices once the customer data has been updated.

⚠️ Very specific exceptions

Only in exceptional cases that can be fully justified before the AEAT, we might justify issuing a credit note and a new invoice to a different entity, provided there is a real continuity or transfer of the transaction.

Valid, documentable scenarios include:

1. Merger, acquisition, or corporate split: you must provide documentation that proves it (deed, succession certificate, new holder’s NIF/VAT).
2. Administrative or factual error in customer identification: it’s proven that the invoice was issued by mistake to a different company than the one that actually contracted the service or purchased the good. You should provide:

• The contract, order, or commercial agreement signed by the correct entity.
• Proof that the payment or contractual relationship actually belongs to the new holder.
• Written acceptance of the correction by both parties.

3. Error in the intra-community VAT number: an invoice was issued with an incorrect VAT number, but belonging to the same customer (e.g., an old number or a transcription error). The invoice may be corrected with a corrective invoice if:

• The customer is the same legal entity (same business name, address, etc.).
• The correct, verified VAT number is provided.

If any of these requirements are not met, the change will only apply to future invoices.

Updated on: 27/10/2025