Electronic electronic invoicing for SMEs in Spain is already reshaping the financial processes of thousands of businesses. By 2026, the regulatory framework will incorporate significant advances in the implementation of systems such as Verifactu, creating both challenges and opportunities for small and medium-sized enterprises and the self-employed. Furthermore, it has been further strengthened with the approval of the Royal Decree in March, which mandates electronic invoicing for B2B transactions.
CFOs and financial directors face the challenge of understanding what electronic invoicing and implementing it in accordance with regulations. In this article, we look at its mandatory nature, deadlines, operational impact, and the role of solutions like easyap.
What is electronic invoicing like for small and medium-sized businesses, and why is it mandatory in Spain?
Electronic invoicing for small and medium-sized enterprises is defined as the process of issuing, sending, and receiving invoices in a digital format for automated processing. That is, files containing structured data (such as Facturae or XML) that meet certain legal requirements.
In Spain, these regulations are already set forth in the following laws:
- The Create and Grow Act (Act 18/2022).
- The regulatory development (still evolving)
- Integration with anti-fraud systems such as Verifactu.
The purpose of these laws and regulations, which have been enacted over the past few years, is clear (and threefold):
- Reduce late payments.
- Improve tax traceability.
- Digitize the entire business sector.
The government has approved the mandatory implementation of B2B electronic invoicing by 2026
In March 2026, the Spanish government approved the Royal Decree that definitively regulates mandatory electronic invoicing between businesses and self-employed individuals (B2B), thereby consolidating the framework established by the Crea y Crece Act.
This development marks a turning point, as electronic invoicing is no longer a regulatory requirement but has become a specific mandate with the following characteristics.
- Mandatory for all B2B transactions. All companies and self-employed individuals must issue and receive electronic invoices in their business transactions.
- Full control over the invoicing cycle. The system will allow you to record issuance, receipt, acceptance, and payment.
- Direct objective: to reduce late payments. The aim is to monitor payment terms and improve financial transparency between companies.
- Interoperable model (public + private). Businesses will be able to use compatible private platforms or a free public solution from the Tax Agency.
- Phased Implementation Schedule. This schedule will begin upon the publication of the ministerial order setting forth the technical details, which is expected before mid-2026.
What does this announcement mean for small and medium-sized businesses?
This change introduces a key difference from previous months:
- It is no longer an estimate, but it is an approved obligation.
- The window of opportunity is narrowing, and implementation must begin now.
- Pressure is mounting pressure on financial systems and ERPs.
For CFOs, this marks the definitive transition from a planning phase to a phase of immediate execution.
Estimated Timeline for the Mandatory Adoption of Electronic Invoicing by Businesses
As we mentioned in the previous section, the requirement for electronic invoicing is being phased in gradually, depending on each business’s annual revenue. This table shows how it affects all types of businesses:
| Type of business | Annual revenue | Expected obligation |
| Large companies | > €8 million | Already mandatory or at an advanced stage |
| Medium-sized SMEs | Between €2 million and €8 million | 2026 (active phase) |
| Small and medium-sized businesses | < 2 millones € | 2027 (estimated) |
| Self-employed | Variable | 2027–2028 (depending on final developments) |
Important: Although some deadlines may still be adjusted or changed, by 2026 many SMEs will already be in the mandatory adaptation phase.
Electronic invoicing for the self-employed: key differences
Specifically, electronic invoicing for self-employed individuals has its own unique characteristics. The most notable differences compared to large companies are:
- Its lower revenue.
- They rely more on simplified, lower-cost tools.
- They have less in-house technical expertise.
For these three reasons, self-employed individuals (and, to a lesser extent, small and medium-sized businesses) have been granted longer deadlines to transition to electronic invoicing.
In other words, a self-employed person earning €50,000 a year does not face the same urgency as an SME with a turnover of €5 million, even though both must adapt.
Relationship between electronic invoicing and Verifactu
Another key concept in 2026 regarding electronic invoicing for small and medium-sized businesses, self-employed individuals, and companies is Verifactu. Remember that this is the system promoted by the Tax Agency, and to help you understand it, we’ll outline its basics below.
What is Verifactu?
It is a system that requires billing software in any type of business to ensure the integrity of invoices, prevent tampering, and enable automatic submission to the tax authorities.
How does it affect businesses?
Under the new regulatory framework, simply issuing an electronic invoice is not enough. Now, the software must be certified or compatible with Verifactu, since full traceability is legally required.
What are the practical implications of Verifactu for businesses and self-employed individuals?
This regulatory change entails changes to ERPs and financial systems, leads to more frequent audits and provides greater fiscal control in real time, for both businesses and the government.
The truth is that Verifactu still raises questions for many organizations and employees. To address the most common ones, here are the most frequently asked questions and answers about the system that users and customers ask us.
The Impact of Electronic Invoicing on Small and Medium-Sized Enterprises
In any case, regardless of the size of the business or the industry, for a CFO, the impact of electronic invoicing goes beyond mere compliance. It is a strategic shift, as it entails:
- Fully digitize the billing cycle.
- Integrate accounting systems and ERP systems.
- Automate accounts payable (AP) and accounts receivable (AR).
- Train the team on new systems.
That said, as we’re already seeing, the change has brought benefits that are already tangible for the businesses that have taken the plunge. To name the most notable ones:
- Fewer manual errors.
- Improved cash flow.
- Greater financial transparency.
- Cost reduction.
- Optimization of time, equipment, and financial resources.
- A more efficient and better-trained workforce.
- Greater productivity and efficiency.
Conversely, if a robust electronic invoicing system is not implemented (or if it is not implemented properly), significant risks are incurred. Primarily, penalties, operational inefficiencies, and international compliance issues .
Implementation timelines: How long does it take for a freelancer or a company to adapt?
In fact, one of the most common mistakes is underestimating the time required for implementation. Factors such as the size of the business, the complexity of the ERP system, the markets in which you operate, and the volume of invoices all play a role here
So, depending on the situation, an estimate for implementing good software might be:
- Small and medium-sized businesses: 2–4 months.
- Medium-sized SMEs: 4–8 months.
- Large and multinational companies: 6–12 months.
In this regard, the implementation should follow a phased approach such as the following:
- Regulatory analysis.
- Software selection.
- Technical integration.
- Tests.
- Go-live.
| Although it is not yet mandatory for many businesses, a number of companies—especially small and medium-sized ones—have already adopted electronic invoicing to avoid bottlenecks. |
A practical example of the impact of electronic invoicing on an SME
To put this into practice, let’s look at the real impact of electronic invoicing using an example. Let’s consider the case of a Spanish company that, in 2025, was in the following situation:
- Revenue: €6 million.
- Operations in 3 countries.
- 10,000 invoices per year.
Previously, invoices at this organization were issued by hand or as PDFs. However, after implementing an electronic invoicing system, the organization began issuing and processing digital invoices in accordance with legal requirements and Verifactu. As a result, now:
- Invoice issuance is automated.
- Invoices are validated in real time.
- They integrate with the company's ERP system.
- Compliance with regulations is automated.
The end result is that administrative processing times are significantly reduced, errors (especially human errors) are minimized, and the business gains greater financial control across the board.
The Role of easyap in Electronic Invoicing
If you're considering taking the same step as the company in the example—whether for operational or legal reasons—it's time to evaluate billing solutions. That's where easyap offers a unique advantage.
In particular, it is ideal as invoicing software for medium and large companies that operate in international environments and have complex financial processes. This is evident in its most notable features:
- Automation of accounts payable and accounts receivable.
- It integrates with the leading ERP systems on the market (SAP, Oracle, etc.).
- Ensures regulatory compliance across multiple countries and jurisdictions.
- It automatically adapts to Verifactu's requirements.
In fact, while some platforms focus solely on issuing invoices, easyap goes much further. It also focuses on optimizing entire financial processes, enabling international scalability and on providing total control and full visibility to CFOs.
How to Prepare for Electronic Invoicing in 2026
So, given the current legal landscape, if you haven’t already done so, it’s time to get ready and make the switch to electronic invoicing, no matter what kind of business you run. To help you prepare for this transition, here are some tips:
- Assess the current state of your billing system.
- Identify gaps compared to Verifactu.
- Choose a solution that fits your business and is scalable.
- Plan when and how you will implement the solution.
Electronic invoicing for small and medium-sized businesses and companies in Spain is now a reality. The passage of the Royal Decree in 2026 removes any uncertainty: electronic invoicing is an imminent requirement. Companies that delay its adoption will face legal risks and operational disadvantages.
From a CFO’s perspective, beyond mere legal compliance, we are facing an ideal opportunity to optimize and automate business processes and gain financial control. Solutions like easyap ensure your legal compliance and position you in a market that is as digital as it is competitive. Contact us and we’ll show you how.
Frequently Asked Questions About Electronic Invoicing for Small Businesses and the Self-Employed
Is it mandatory for small and medium-sized businesses in Spain to use a specific electronic invoice format?
Yes. Although there are several formats, the system must allow for interoperability and comply with the standards defined by Spanish and European regulations.
What happens if a company, SME, or self-employed individual fails to adapt in time?
They may face financial penalties of up to 50,000 euros, in addition to operational problems due to their inability to issue valid invoices.
Does Verifactu replace electronic invoicing?
No. These are complementary but independent regulations that affect different stages of the financial process.
Should an international company adapt solely to Spain?
No. You must comply with all local regulations, which makes it even more necessary to implement a solution that can manage operations across multiple jurisdictions and countries.
