VeriFactu for mechanical workshops: what it is, when it becomes mandatory and how to prepare

VeriFactu is the technical side of Spain's so-called "anti-fraud law" (Ley 11/2021), developed through Royal Decree 1007/2023. It is not an obligation limited to large companies: it affects any business operating in Spain that issues invoices, mechanical workshops included, regardless of size. What changes is not which invoices you can issue, but how the software generating them must behave.

What VeriFactu is

VeriFactu requires invoicing software to be a verifiable Sistema Informático de Facturación (SIF). In practice, this means every invoice issued generates a record chained by a hash that depends on the hash of the previous invoice — so if anyone tries to delete or alter an invoice that has already been issued, the chain breaks and it is detectable — is digitally signed, and includes a QR code that lets anyone verify its authenticity. If the workshop opts to send each record to the Spanish tax agency immediately, the invoice is labelled "VERI*FACTU".

Who it affects and when it takes effect

• Companies (subject to Corporate Tax): mandatory from 1 January 2027.
• Sole traders (subject to personal income tax): mandatory from 1 July 2027.
• It applies to any business issuing invoices in Spain, with no exception by sector or size — a one-mechanic workshop is just as affected as a multi-branch chain.

What happens if your workshop does not comply

The regulation sets out penalties both for software vendors that fail to adapt their products and for businesses that knowingly keep using a non-compliant invoicing system once the deadline has passed. For a workshop, the real risk is not just the fine: invoices issued with a non-verifiable system can be challenged during a tax inspection, precisely because it cannot be proven they have not been altered.

What your workshop's invoicing software must guarantee

• Each invoice chained to the previous one via a hash, so any later alteration is detectable.
• Digital signature on every invoicing record.
• A QR code on every invoice, both on screen and on the PDF printed or sent to the customer.
• No ability to edit or delete an invoice once issued — corrections can only be made through a credit note or corrective invoice.
• Full traceability: who sent each record, when, and with what result.

How TallerOS handles this

TallerOS already has VeriFactu submission integrated through an authorised filing partner: when the integration is active, every invoice and credit note the workshop issues is hash-chained, digitally signed, submitted and given its QR code automatically. This is not a future roadmap item — it already works and is already in real use. We are still validating a handful of specific cases with our partner before switching it on by default for every account, so if you run a workshop on the Premium plan and want to start using it now, reach out through the help section and we will enable it on your account.