There was a time when e‑invoicing simply meant replacing paper or PDFs with something digital. That phase is long behind us. Today, e‑invoicing has become a core compliance function, tightly linked to tax control, data quality, and real‑time reporting. With ViDA approaching and national initiatives accelerating, the regulatory landscape in Europe is shifting faster than ever.
Businesses now operate in an environment where structured invoice data, secure exchange networks, continuous transaction controls, and digital reporting requirements are becoming the norm.
The direction is clear, but the path is anything but uniform. Each country is moving at its own pace, adopting its own model, and defining its own technical expectations. This is why timing matters: aligning go‑to‑market efforts with announced mandates is no longer a tactical choice — it is a strategic necessity.
Existing national platforms, including those in Italy and Poland, have an extra 5 years to align with ViDA. Nevertheless, new B2B mandates are being introduced that will need to be adapted by 2030. It creates significant pressure from a resource planning perspective.
ViDA: a common goal with many open questions
ViDA sets out what must be reported for cross‑border transactions and requires domestic reporting to follow the same principles. Yet two important elements remain undefined.
The first is how additional data requirements should be declared. EN-16931 offered a clear extension methodology; ViDA does not.
The second is the lack of a prescribed exchange infrastructure. ViDA does not specify how invoices or reports should move between parties or toward tax administrations. As a result, countries are taking different routes.
Some countries are attempting to make email secure enough to remain viable. Most countries are abandoning email entirely in favor of secure, governed networks
There is a clear tendency to adopt Peppol as the default exchange framework and to establish national Peppol Authorities. Even within this group, however, approaches diverge.
Between 4‑corner, 5‑corner, and hybrid models
A major driver of this divergence is the need for strong identity and delegation controls. Tax administrations must know who is sending data and on whose behalf. This has led to a mix of models.
Whilst Peppol is a standard for exchange between businesses, many countries work on a centralized reporting platform. Only a few countries are moving toward a 5‑corner model, but require accredited service providers and extra security measures.
Two main approaches to KYC are emerging: token‑based authentication and whitelist‑based authorization. France, Slovakia, and the UAE illustrate how different these architectures can be in practice.
For businesses, this fragmentation has a clear implication: managing delegation across multiple territories will be challenging. A centralized approach is the way forward.
Data quality becomes the next compliance challenge
ViDA will also raise the bar for data quality. Businesses will need to apply stricter tax categorization, clearly distinguish between goods and services, and ensure that data is correct before it is sent. Real‑time reporting removes the possibility of correcting errors later, as is common in post‑audit environments.
What’s coming: a snapshot of announced mandates
Several countries are moving ahead with bespoke national platforms or specific KYC and reporting rules.
🇬🇷 Greece requires Greek‑only service providers from March 2026.
🇭🇺 Hungary continues to operate with a bespoke platform but without requiring external providers.
🇵🇱 Poland B2B rollout provides delegation but no further accreditation.
🇩🇰 Denmark today requires Danish credentials, a review being announced.
🇪🇸 Spain is preparing Verifactu for January 2027 and a B2B mandate for July 2027.
🇫🇷 France will introduce accreditation and data sovereignty requirements in September 2026.
🇪🇺 Others are expected to adopt Peppol eDelivery, in some cases with 5‑corner integration.
🇭🇷 Croatia is targeting January 2026.
🇸🇰 Slovakia plans a 2027 rollout with technical accreditation.
🇳🇴 Norway is preparing for January 2027.
🇱🇻 Latvia will move to mandatory adoption in January 2028, with voluntary use from March 2026.
🇮🇪 Ireland will phase in requirements between 2028 and 2029.
🇬🇧 The UK is expected to follow in 2029.
This landscape will continue to evolve rapidly.
Where businesses should begin
🇫🇷 France’s September 2026 mandate will likely be the first major wake‑up call. Even if the model is not fully aligned with ViDA, its extensive reporting requirements will expose data quality issues and partner identification gaps.
🇧🇪 Belgium and 🇸🇰 Slovakia offer early examples of ViDA‑aligned thinking. Belgium plans to introduce DRR in 2028. Slovakia will begin with domestic DRR before expanding to intra‑community reporting, accepting also European credentials.
Meanwhile, besides countries such as 🇭🇺 Hungary and 🇳🇱 the Netherlands, at least sixteen member states have already published their ViDA plans or launched consultations. This growing body of information helps businesses design processes that can be reused across mandates, even when local deviations exist.
How Axway supports this transition
Axway provides the abstraction layer that businesses increasingly need. Multi‑country compliance is a clear differentiator compared to national players. Many customers operate in clusters. For example, German companies often include Poland, Romania, Slovakia, and Hungary in their scope. Axway’s approach supports this naturally.
The 4‑corner model remains a strong foundation for scalable document exchange, and Axway continues to endorse it. In smaller or more protected markets, partnerships with local players can ensure that customers still benefit from a single point of contact without requiring heavy local investment.
Ultimately, Axway helps businesses stay focused on their operations rather than on the constant churn of regulatory change. By absorbing technical complexity and providing a unified compliance layer, Axway enables organizations to move confidently through an increasingly fragmented e‑invoicing landscape.