OasisPro · eInvoicing Gateway · EU Compliance · Peppol · Any ERP
One gateway.
Every EU country. Any ERP.
EU eInvoicing Gateway compliance is now essential for every business trading across Europe. Belgium, Italy, Poland, France, Germany, Romania and more each have their own network, their own format, their own deadline. The OasisPro EU eInvoicing Gateway connects any ERP to all of them through a single powerful middleware connection.
Most businesses selling into the EU today are either already non-compliant in at least one country, or they are about to be. The EU eInvoicing mandate wave is not coming. It is here. Italy has been mandatory since 2019. Belgium went live in January 2026. France starts in September 2026. Poland is already enforcing. Germany requires structured receiving from 2025, sending from 2027. The European Commission's eInvoicing programme and the Peppol network are the backbone of this transformation, with ViDA bringing near-real-time reporting to all 27 member states by 2030.
Building a separate integration for every country is expensive, slow, and unsustainable. The OasisPro eInvoicing Gateway gives your business a single, maintained middleware connection that handles every EU network, every format, and every mandate update from one place.
The OasisPro EU eInvoicing Gateway. Your single powerful connection to EU eInvoicing compliance.
Connect once. Stay compliant everywhere. The OasisPro eInvoicing Gateway sits between your ERP and every EU eInvoicing network: Peppol, SDI, KSeF, Chorus Pro, e-Factura, myDATA and more. Your invoices go in. Compliant, network-routed, validated eInvoices come out. No country-by-country integrations. No format headaches. No missed mandates.
How the OasisPro eInvoicing Gateway works
The OasisPro EU eInvoicing Gateway is middleware. It sits between your ERP and the EU eInvoicing infrastructure, handling format conversion, network routing, validation, and status reporting automatically. Your ERP does what it always does. The gateway handles everything in between.
The EU eInvoicing mandate wave: where every country stands
EU eInvoicing mandates are not a future concern. Most of them are already active or within months of going live. The OasisPro EU eInvoicing Gateway covers every country in the table below, with automatic updates as regulations change.
| Country | Mandate type | Deadline | Network | Format | Status |
|---|---|---|---|---|---|
| 🇮🇹 Italy | B2B and B2G | Mandatory since 2019 | SDI (Sistema di Interscambio) | FatturaPA XML | Live |
| 🇷🇴 Romania | B2B and B2G | Active since 2024 | RO e-Factura | UBL / national XML | Live |
| 🇧🇪 Belgium | B2B mandatory | January 2026 | Peppol | Peppol BIS / UBL 2.1 | Live |
| 🇭🇷 Croatia | B2B and B2G | January 2026 | National platform | EN 16931 | Live |
| 🇵🇱 Poland | B2B mandatory | Feb 2026 (large) / Apr 2026 (all) | KSeF | National XML (FA) | Live |
| 🇬🇷 Greece | B2B mandatory | February 2026 | myDATA | EN 16931 / UBL | Live |
| 🇱🇻 Latvia | B2B and B2G | January 2026 | Peppol | Peppol BIS | Live |
| 🇩🇪 Germany | Receiving: Jan 2025. Sending: 2027 / 2028 | Phased to Jan 2028 | Peppol / ZRE | XRechnung / ZUGFeRD | Phased |
| 🇫🇷 France | Receiving: Sep 2026 all. Sending: large from Sep 2026, SMEs Sep 2027 | Sep 2026 onwards | Certified PDPs / Chorus Pro | Factur-X / UBL / CII | Imminent |
| 🇪🇸 Spain | B2B phased rollout | 2027 (large) / 2028 (all) | National platform | EN 16931 | Planned |
| 🇳🇱 Netherlands | B2G mandatory. B2B in progress. | B2G live. B2B TBC | Peppol | Peppol BIS / UBL | Phased |
| 🇸🇪🇩🇰🇫🇮🇳🇴 Nordics | B2G mandatory. B2B progressing. | B2G live | Peppol | Peppol BIS | Phased |
Every EU eInvoicing format. All handled by the gateway.
One of the biggest challenges with EU eInvoicing is that every country can require a different format. Italy requires FatturaPA. Germany accepts XRechnung and ZUGFeRD. France uses Factur-X. Belgium and the Nordics use Peppol BIS. The OasisPro eInvoicing Gateway handles format conversion automatically so your ERP only ever needs to output one thing.
Peppol BIS Billing 3.0
The primary cross-border EU eInvoicing format. Used by Belgium, Netherlands, Norway, Denmark, Sweden, Finland, and for B2G across most of Europe.
UBL 2.1 / EN 16931
The EU baseline standard (EN 16931) in UBL syntax. Required across multiple EU mandates and the foundation for Peppol BIS and national CIUSes.
FatturaPA (Italy)
Italy's national XML format for all domestic B2B and B2G transactions. Every invoice to an Italian business must route through SDI in this format.
XRechnung (Germany)
Germany's national CIUS of EN 16931. Required for B2G and widely adopted for B2B. The OasisPro eInvoicing Gateway generates compliant XRechnung output automatically.
ZUGFeRD / Factur-X
The hybrid PDF/XML format used in Germany and France. Embeds structured XML data inside a human-readable PDF. Accepted under German and French mandates.
UN/CEFACT CII
The EN 16931 standard in Cross Industry Invoice syntax. Used alongside UBL in France, Germany, and other markets. Fully supported by the OasisPro eInvoicing Gateway.
Works with any ERP. No exceptions.
The OasisPro EU eInvoicing Gateway is designed to be ERP-agnostic. Whatever system your finance team works in, the gateway connects to it, processes your invoice data, and routes compliant eInvoices to the right EU network. No ERP-specific builds required. No per-system pricing.
What the OasisPro eInvoicing Gateway does for your business
The OasisPro EU eInvoicing Gateway is not just a file converter. It is a complete eInvoicing middleware layer that handles the full lifecycle of every invoice from the moment it leaves your ERP to the moment it is accepted by the tax authority and the trading partner.
Automatic format conversion
Your ERP outputs standard invoice data. The gateway converts it to the correct format for each destination country: FatturaPA for Italy, XRechnung for Germany, Peppol BIS for Belgium, Factur-X for France, and so on.
Real-time validation
Every invoice is validated against the relevant country rules before transmission. Errors are flagged before submission, not after rejection by the tax authority. No more chasing rejected invoices across borders.
Intelligent network routing
The gateway identifies the destination country and routes the invoice through the correct network automatically: Peppol, SDI, KSeF, Chorus Pro, e-Factura, myDATA or another country-specific channel.
Status tracking and reporting
Track every invoice through its full lifecycle: submitted, validated, accepted, rejected, acknowledged. Full status visibility from your ERP or the OasisPro portal without logging into each country's platform separately.
Complete audit trail
Every transaction logged, timestamped, and stored for compliance. Full audit trail for VAT inspections, supplier disputes, and regulatory reporting across all EU countries from one place.
Mandate updates included
EU eInvoicing regulations change. New countries go live. Formats are updated. Deadlines shift. The OasisPro eInvoicing Gateway is maintained and updated as mandates evolve. You stay compliant without doing anything.
ViDA: the EU-wide eInvoicing mandate that covers all 27 member states by 2030
VAT in the Digital Age (ViDA) was adopted in March 2025. It introduces near-real-time digital reporting for all intra-EU B2B transactions and makes eInvoicing the default invoicing method across all 27 EU member states by 2030. The OasisPro eInvoicing Gateway is built to be ViDA-ready, so businesses connected today will not need to rebuild their compliance infrastructure as the ViDA framework rolls out.
What non-compliance with EU eInvoicing mandates actually costs
EU eInvoicing mandates are tax law. Non-compliance is not a technical inconvenience. It is a legal and financial risk that varies by country but is significant in all of them.
Poland (KSeF)
Invoices without a KSeF number are legally invalid for VAT purposes. Buyers cannot deduct input VAT on invoices not submitted through KSeF. Revenue impact is immediate.
France
Fines of up to EUR 15 per non-compliant invoice, capped at EUR 15,000 per year. From September 2026, all businesses must be able to receive eInvoices regardless of size.
Italy
Invoices not submitted through SDI in FatturaPA format are not legally valid. VAT on non-compliant invoices cannot be deducted. Penalties are applied per transaction.
Belgium
All VAT-registered businesses must send and receive structured eInvoices via Peppol from January 2026. Non-established foreign businesses with Belgian VAT numbers must also comply.
Flexible pricing to match your transaction volume
The OasisPro eInvoicing Gateway is available on per-transaction, monthly, and annual subscription models. Whether you process dozens of invoices a month or hundreds of thousands, there is a pricing model that fits your volume and your budget. Contact our team for a quote tailored to your countries, ERP, and invoice volumes.
Why OasisPro for your EU eInvoicing Gateway
OasisPro is not a general-purpose EU eInvoicing Gateway built for any market. We are ERP and finance compliance specialists with deep expertise in IFS Cloud, Odoo, and the EU regulatory landscape. The OasisPro eInvoicing EU eInvoicing Gateway is built on that foundation, maintained by specialists who understand both the ERP side and the compliance side of the problem.
- Single connection, all of Europe: One middleware integration from your ERP reaches every EU country, every network, and every format without additional country builds.
- ERP specialists, not just compliance software: We understand how ERPs generate invoice data and how to connect them correctly. Most eInvoicing platforms do not have that depth.
- Mandate updates maintained for you: EU eInvoicing regulations change frequently. OasisPro maintains the gateway as mandates evolve so your business stays compliant without touching anything.
- Real-time validation before submission: Invoices are validated against current country rules before they are sent. Errors are caught at the gateway, not returned as rejections from tax authorities.
- Full audit trail: Every invoice, every transmission, every status update logged and available for VAT inspections and compliance reporting across all EU countries.
- ViDA ready: The gateway architecture is aligned with the ViDA framework so your business is prepared for the 2030 EU-wide digital reporting requirement without a future rebuild.
The EU eInvoicing mandate wave is not slowing down. Your business needs to be ahead of it, not reacting to it.
Belgium is live. Poland is live. Italy has been live for seven years. France arrives in September 2026. Germany's sending mandate kicks in from 2027. ViDA covers all 27 member states by 2030. Every business trading in the EU needs an EU eInvoicing Gateway. The OasisPro EU eInvoicing Gateway gives you one connection that covers all of it, now and as the mandates grow.
Ready to connect your ERP to every EU eInvoicing network?
Talk to the OasisPro team. We will review the countries you invoice into, your ERP setup, and your current compliance gaps, then show you how the OasisPro eInvoicing Gateway closes all of them through a single connection.
Frequently asked questions about the OasisPro eInvoicing Gateway
Which ERPs does the OasisPro eInvoicing Gateway support?
The OasisPro eInvoicing Gateway connects to any ERP. Whether you run SAP, Oracle, Microsoft Dynamics, Odoo, IFS Cloud, NetSuite, Infor, or any other ERP, the single middleware connection handles all EU eInvoicing from that system without ERP-specific builds.
Which EU countries does the gateway cover?
The OasisPro eInvoicing Gateway covers all EU countries with active or upcoming eInvoicing mandates, including Italy, Belgium, France, Germany, Poland, Romania, Spain, Croatia, Greece, Latvia, the Netherlands, and the Nordic countries. Coverage expands automatically as new country mandates go live.
Does the OasisPro eInvoicing Gateway support Peppol?
Yes. The gateway supports Peppol as a certified access point as well as all major country-specific networks including Italy's SDI, France's certified PDPs, Poland's KSeF, Romania's e-Factura, and Greece's myDATA. Every network supported through a single connection.
What eInvoicing formats does the gateway support?
The OasisPro eInvoicing Gateway supports all major EU eInvoicing formats including Peppol BIS Billing 3.0, UBL 2.1, EN 16931 in both UBL and CII syntax, XRechnung, ZUGFeRD, Factur-X, and FatturaPA. Format conversion is handled automatically based on the destination country.
What happens if EU eInvoicing regulations change?
The OasisPro eInvoicing Gateway is maintained and updated as EU eInvoicing mandates evolve. New country mandates, format updates, and deadline changes are handled by OasisPro and applied to the gateway. Your business stays compliant without touching your ERP integration.
What are the pricing options for the OasisPro eInvoicing Gateway?
The OasisPro eInvoicing Gateway is available on per-transaction, monthly subscription, and annual subscription pricing. The right model depends on your invoice volume, country coverage, and budget. Contact the OasisPro team for a quote tailored to your business.
One gateway. Every EU country. Any ERP.
EU eInvoicing mandates are not a future project. They are active now in Italy, Belgium, Poland, Romania, Greece, Latvia, and Croatia. France arrives in September 2026. Germany's sending mandate phases in from 2027. ViDA brings near-real-time reporting to all 27 EU member states by 2030.
Every business trading in the EU needs a compliant EU eInvoicing Gateway. The OasisPro EU eInvoicing Gateway gives you one connection from your existing ERP to all of it, without rebuilding your invoicing infrastructure country by country.
OasisPro are ERP and eInvoicing compliance specialists based in the UK, helping businesses across the UK and Europe connect any ERP to the EU eInvoicing infrastructure through the OasisPro eInvoicing Gateway. · info@oasispro.co.uk · 01865 538071 · oasispro.co.uk