OasisPro · EU eInvoicing Gateway · Peppol · Any ERP · Most Affordable
One gateway.
Every EU country. Any ERP.
EU eInvoicing Gateway compliance is no longer a future project. Belgium, Italy, Poland, France, Germany, Romania and more each have their own network, their own format, and their own deadline active right now. The OasisPro EU eInvoicing Gateway connects any ERP to all of them through a single, affordable middleware connection, with the most competitive pricing in the market and zero compromise on reliability.
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 enforcing now. Germany requires structured receiving from 2025 and 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 EU eInvoicing Gateway gives your business a single, maintained, affordable middleware connection that handles every EU network, every format, and every mandate update from one place.
The most affordable EU eInvoicing Gateway. One connection. Every country. Any ERP.
Connect once. Stay compliant everywhere. The OasisPro EU 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. And no enterprise licensing fee to make it all possible.
The most affordable EU eInvoicing Gateway in the market
Most EU eInvoicing middleware is priced for enterprise buyers with enterprise budgets. Per-country connection fees, annual licensing minimums, and professional services just to get started. For mid-market businesses and growing ERP environments, those cost structures make compliance feel out of reach.
OasisPro built the EU eInvoicing Gateway on a different model. One affordable connection covers every EU country, every network, and every format. There is no per-country surcharge, no separate licence for each network, and no hidden infrastructure cost passed back to the business. You pay for compliance that actually works, at a price that makes the decision easy.
Affordable does not mean basic. The OasisPro EU eInvoicing Gateway is enterprise-grade middleware at mid-market pricing.
Real-time validation, full audit trail, automatic mandate updates, and multi-network routing are included as standard, not sold as premium add-ons. Every business connecting through OasisPro gets the full capability of the gateway at the same price.
How the EU 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.
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 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 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 gateway is maintained and updated as mandates evolve. You stay compliant without doing anything.
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 | Status |
|---|---|---|---|---|
| 🇮🇹 Italy | B2B and B2G | Mandatory since 2019 | SDI · FatturaPA | Live |
| 🇷🇴 Romania | B2B and B2G | Active since 2024 | RO e-Factura | Live |
| 🇧🇪 Belgium | B2B mandatory | January 2026 | Peppol · UBL 2.1 | Live |
| 🇭🇷 Croatia | B2B and B2G | January 2026 | EN 16931 | Live |
| 🇵🇱 Poland | B2B mandatory | Feb 2026 (large) / Apr 2026 (all) | KSeF | Live |
| 🇬🇷 Greece | B2B mandatory | February 2026 | myDATA | Live |
| 🇱🇻 Latvia | B2B and B2G | January 2026 | Peppol BIS | Live |
| 🇩🇪 Germany | Receiving Jan 2025. Sending 2027/2028 | Phased to Jan 2028 | XRechnung · ZUGFeRD | Phased |
| 🇫🇷 France | Large/mid Sep 2026. SMEs Sep 2027 | Sep 2026 onwards | PDPs · Factur-X · CII | Imminent |
| 🇪🇸 Spain | B2B phased rollout | 2027 (large) / 2028 (all) | National platform | Planned |
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.
Works with any ERP. One affordable connection.
The OasisPro EU eInvoicing Gateway is 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.
Pricing that scales with your business
The OasisPro EU 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 an affordable pricing model that fits your volume.
Pay only for what you send. Ideal for businesses with variable invoice volumes or those starting their EU eInvoicing journey.
- ✓ No monthly commitment
- ✓ All networks included
- ✓ Scale up or down freely
Predictable monthly cost with a set transaction allowance. Best for businesses with consistent EU invoice volumes across multiple countries.
- ✓ Predictable cost
- ✓ Priority support included
- ✓ Volume discounts available
Annual commitment with maximum savings. Best for high-volume businesses with established EU trading relationships across multiple countries.
- ✓ Lowest per-invoice cost
- ✓ Dedicated account manager
- ✓ SLA and uptime guarantees
ViDA: EU-wide eInvoicing mandatory across all 27 member states by 2030
VAT in the Digital Age was adopted in March 2025. It introduces near-real-time digital reporting for all intra-EU B2B transactions and makes eInvoicing the default method across all 27 EU member states by 2030. The OasisPro EU eInvoicing Gateway is built to be ViDA-ready, so businesses connected today will not need to rebuild their compliance infrastructure as the framework rolls out.
Why OasisPro for your EU eInvoicing Gateway
OasisPro is not a general-purpose EU eInvoicing Gateway built for any market. As ERP and finance compliance specialists with deep expertise in IFS Cloud, Odoo, and the EU regulatory landscape, the OasisPro EU eInvoicing Gateway is built on that foundation.
- Most affordable in the market: One affordable connection from your ERP reaches every EU country, every network, and every format without per-country surcharges or enterprise licensing minimums.
- ERP specialists, not just compliance software: OasisPro understands 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 from one place.
- 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 Gateway is one part of a connected compliance suite.
OasisPro builds and maintains three middleware products covering the compliance gaps that ERP vendors leave open. Businesses using more than one can connect them through a single OasisPro engagement.
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 EU eInvoicing Gateway closes all of them through one affordable connection.
Frequently asked questions about the EU eInvoicing Gateway
Which ERPs does the OasisPro EU eInvoicing Gateway support?
The OasisPro EU eInvoicing Gateway connects to any ERP system. Whether you run SAP, Oracle, Microsoft Dynamics, Odoo, IFS Cloud, NetSuite, Infor, or any other ERP, the single affordable middleware connection handles all EU eInvoicing compliance from that system without ERP-specific builds.
Which EU countries does the EU eInvoicing Gateway cover?
The OasisPro EU 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 EU 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 affordable connection.
Is the OasisPro EU eInvoicing Gateway affordable for mid-market businesses?
Yes. The OasisPro EU eInvoicing Gateway is priced to be the most affordable EU eInvoicing middleware in the market. Per-transaction, monthly subscription, and annual subscription pricing models mean businesses only pay for what they actually use, with no enterprise licensing minimum and no per-country surcharges.
What eInvoicing formats does the EU eInvoicing Gateway support?
The OasisPro EU 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 EU 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 automatically. Your business stays compliant without touching your ERP integration.
One affordable gateway. Every EU country. Any ERP.
EU eInvoicing mandates 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 affordable connection from your existing ERP to all of it, without rebuilding your invoicing infrastructure country by country.
OasisPro are ERP and eInvoicing compliance specialists helping businesses across the UK and Europe connect any ERP to the EU eInvoicing infrastructure through the most affordable gateway in the market. · info@oasispro.co.uk · 01865 538071 · oasispro.co.uk