Verifactu and E-Invoicing in 2026: The Real Timeline and What to Do Now

If you’re self-employed or handle the books for a small business, you’ve probably heard people talk about Verifactu, mandatory e-invoicing, or both muddled together in the same sentence. They’re not the same thing, even though they spring from the same legal push: modernizing invoicing in Spain and shutting the door on “dual-use software” that let businesses hide sales. This guide separates the two obligations, explains what each one actually requires, and lays out what you should be doing already in 2026 — without inventing deadlines that are still very much in flux.

Verifactu: What the Invoicing Regulation Actually Requires

Verifactu comes from the Regulation implementing Spain’s Anti-Fraud Law (Ley 11/2021), and it targets invoicing computer systems (SIF, in the Spanish acronym) — the software you use to issue invoices, whether that’s an ERP, a POS system, or a simple app. The rule requires that software to guarantee the integrity, traceability, and tamper-proof nature of invoicing records: each invoice is chained to the one before it through a digital fingerprint (hash), nothing can be deleted or altered without leaving a trace, and every invoice carries a QR code that lets it be verified.

Within that requirement, there are two modes. The Verifactu mode proper means your software sends each invoicing record to the Tax Agency almost in real time; in exchange, it frees you from certain other record-keeping obligations, and the invoice itself carries the label “VERI*FACTU”. The non-Verifactu mode lets you skip that immediate transmission, but the software still has to meet the same technical integrity requirements and be ready to produce the records if the AEAT asks for them. In practice, for most self-employed people and small businesses, the real question isn’t philosophical — it’s which option your software provider activates by default, and whether they can back up, with a signed compliance declaration, that their product meets the regulation.

Mandatory E-Invoicing: The Other Piece (the Crea y Crece Law)

Verifactu shouldn’t be confused with mandatory electronic invoicing between businesses and professionals (B2B), which comes from a different law: Ley 18/2022, known as Crea y Crece. This obligation isn’t about policing fraud — it’s about standardizing invoice formats so they can flow between companies in a structured, interoperable way, which also makes it easier to track late payments in commercial transactions. Its implementing regulations have moved more slowly than Verifactu’s, and the rollout is staggered by company revenue, giving small businesses and freelancers more time to adapt than large companies get.

Mixing the two up is common, since they share the same underlying goal — greater traceability of economic activity — and because many software solutions end up bundling both requirements into a single product. But they’re two separate timelines and two legally distinct obligations: complying with one doesn’t automatically get you off the hook for the other.

Timeline by Company Size, and What to Do Now

Verifactu’s rollout timeline has been pushed back several times since the regulation was approved, and it consistently treats companies (subject to the rule sooner) differently from self-employed individuals and other personal-income-tax filers (who get extra breathing room). Since these dates keep shifting, don’t trust a specific deadline you read months ago — confirm with your software provider, and if you’re unsure, check the AEAT’s Sede Electrónica for the exact deadline that applies to your legal structure and revenue level. What’s certain is the direction of travel: paper invoicing, uncontrolled Excel sheets, or software that lets you delete and rewrite invoices without a trace — all of that is on its way out.

There are three common mistakes: assuming the obligation is “optional if you’re small” (it isn’t — only the deadline changes), continuing to use invoicing software without asking your provider, in writing, for a declaration that it complies with the regulation, and confusing “invoices in PDF” with a certified system (emailing a PDF is not the same as running a SIF with hashing, chaining, and a QR code). Here’s what you can do today: ask your provider for explicit confirmation that their product is already compliant, or will be in time; decide whether the Verifactu mode with immediate transmission suits you better than the non-Verifactu one; and check that your invoice and credit-note numbering already follows an orderly logic, because once the system is chained, any gap or duplicate will stand out far more.

At Zythos Business, we help self-employed people and small businesses turn regulatory changes like this into concrete decisions: which software to choose, what to request from your provider in writing, and how to adapt your invoicing without last-minute scrambling once your deadline arrives. The fine print from the Tax Agency keeps changing; our job is making sure it never catches you switching systems at the eleventh hour.