2026 Guide: Differences Between the Create and Grow Law and the Verifactu System (And How It Affects Your Firm’s Client Portfolio)

If your firm still talks about mandatory e-invoicing as if it were a single obligation, now's the time to clear it up with your clients before they get it wrong on their own. The Create and Grow Law and the Verifactu system are two separate regulations, with different objectives, different timelines, and different technical requirements — and your portfolio of self-employed clients will have to comply with both at the same time.

This confusion isn't an academic nuance. It's the reason why, in the coming months, many self-employed clients will walk into your office thinking a PDF invoice already puts them "in order" with the Tax Agency regarding the electronic invoicing obligation, when in reality they're only halfway compliant. Let's set the record straight. For the full regulatory picture, see the complete guide on our Verifactu landing page.

Two Laws, Two Different Problems

Although they're often mentioned in the same breath, each regulation targets a different problem in the Spanish economy.

The Create and Grow Law: Ending Late Payments Between Businesses

Law 18/2022, the core framework behind Create and Grow law e-invoicing, requires that all invoices between companies and self-employed professionals (B2B) be issued in a structured electronic format — not a PDF, not a photo of a receipt, but a file a computer system can automatically read and interpret (Facturae, or the European formats UBL, CII, and EDIFACT).

Its real objective isn't tax-related, it's about commercial traceability: enabling the authorities to know when an invoice is issued, when it's accepted or rejected, and above all, when it's paid. Spain is one of the European countries with the highest rate of late payments between businesses, and this law aims to make it much harder to leave a supplier unpaid for months without it being noticed.

The implementing regulation for this law (Royal Decree 238/2026, published in the BOE on March 31, 2026) has already set the technical framework for electronic invoicing in Spain: there will be a free public solution from the AEAT alongside interconnected private platforms. However, the effective entry into force of the deadlines is still pending the Ministerial Order that must develop that public solution, so the specific dates by company revenue bracket should be confirmed at the time this article is published.

The Verifactu System: Ending the "Black Cash Box"

The Anti-Fraud Law (Law 11/2021) and its implementing regulation, Royal Decree 1007/2023, go in a completely different direction: they require that the invoicing software used by your clients guarantee that billing records cannot be altered or deleted after the fact. Each invoice is cryptographically chained to the previous one, and if the system is "Verifactu," records can be sent to the Tax Agency in real time.

Here the objective is purely fiscal: preventing double bookkeeping or "dressing up" declared sales. It doesn't matter whether the invoice is between two businesses or to a private individual; what's regulated is the software itself that generates it.

As for deadlines, the Verifactu timeline has been postponed twice. Following Royal Decree-law 15/2025 (BOE of December 3, 2025), the mandatory compliance dates are now January 1, 2027 for companies subject to Corporate Tax and July 1, 2027 for self-employed professionals. The postponement affects when a certified system must be used, not software vendors, who have been required to have adapted systems since July 2025.

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The Mistake That Will Overwhelm Your Firm If You Don't Fix It Now

Most of your clients will assume that complying with one of the two laws covers them. It doesn't: a self-employed professional can have Verifactu-certified software (which prevents manipulating their sales) and still be in breach of the Create and Grow Law if they keep sending PDF invoices to other businesses. And the reverse is also true: they can issue perfectly formatted Facturae invoices and still be using a spreadsheet for internal bookkeeping that the Tax Agency can't verify in real time.

For your firm, this translates into a very specific problem: you can't solve this tool by tool, client by client. If you manage a portfolio of 100, 200, or 400 self-employed clients, you need the software they use to comply with both regulations at once from day one — because every time a client relies on two separate systems (one for invoicing, another for the tax record), the risk of errors, duplication, and hours lost reconciling data grows exponentially for your team.

One Solution for Both Laws, Without Teaching Anyone Computer Skills

This is where the real advantage for your firm comes in: at Binhex Cloud, Emma AI handles both Verifactu compliance (a traceable, chained record) and the structured e-invoicing flow required by the Create and Grow Law, all within the same system — without your clients ever having to learn how to use an ERP.

For a traditional self-employed client, clean data arrives simply by talking to Emma AI via chat or voice, with no forms and no training courses. For your firm, that means you stop depending on whether your clients know how to scan a receipt properly or fill in a field correctly: the data already arrives structured.

And for you, as an advisory firm, the advantage goes one step further: you can connect your own Claude or ChatGPT to your clients' accounts via MCP and audit hundreds of accounts in seconds, instead of reviewing folder by folder at every quarterly close.

Discover how Binhex Cloud prepares your firm for both Create and Grow and Verifactu