The verdict in three sentences
The e-invoicing reform requires companies to issue and receive invoices through a certified partner platform (PDP) using Factur-X, UBL or CII formats. For a software vendor or a CFO, the fastest route is connecting to an existing certified platform (8,000 to 30,000 EUR) rather than a full in-house build. Budget 6 to 12 weeks of project work and 50 to 500 EUR/month of run cost depending on invoice volume.
Platform connection or in-house build
Building the whole chain in-house (directory, formats, status lifecycle, e-reporting) is expensive and risky. Connecting to a certified platform outsources the regulatory and interoperability layer; your software focuses on generating invoices and syncing statuses. For most SMEs, the platform connection offers the best cost/risk ratio.
| Criterion | In-house build | Platform connection |
|---|---|---|
| Initial cost 2026 (EUR) | 40,000 - 120,000 | 8,000 - 30,000 |
| Implementation time | 6 - 12 months | 6 - 12 weeks |
| Regulatory maintenance | On you | Handled by the platform |
| Factur-X/UBL format handling | To build | Native |
| E-reporting to the tax authority | To build | Included |
| Monthly run cost (EUR) | Variable / high | 50 - 500 |
Pricing your platform integration
The budget depends on the number of flows (issuance, reception, e-reporting), formats to support and the degree of status automation. Here are the 2026 orders of magnitude.
| Line item | 2026 range (EUR) | Nature |
|---|---|---|
| Platform API connector (issuance) | 4,000 - 10,000 | One-off |
| Reception + status reconciliation | 3,000 - 9,000 | One-off |
| Factur-X + UBL format support | 2,000 - 6,000 | One-off |
| Transaction/payment e-reporting | 2,000 - 8,000 | One-off |
| Platform subscription (run) | 50 - 500 / month | Recurring |
| Maintenance + regulatory watch | 200 - 600 / month | Recurring |
Mini case study
Sophie, CFO of a trading SME in Amsterdam, issues 1,400 invoices per month on in-house software. She picks a platform connection at 18,000 EUR (issuance + reception + e-reporting) over an in-house build estimated at 70,000 EUR. Run cost: 250 EUR/month. Against the risk of invoice rejections and non-compliance penalties, she saves 52,000 EUR on the initial investment and secures 100% of her client flows. The project wraps in 9 weeks, ahead of the regulatory deadline.
FAQ
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
What is a certified platform and why connect my software to it?
A certified partner platform is an accredited operator that transmits electronic invoices and e-reporting to the tax authority. Connecting to it avoids building and maintaining the whole regulatory layer.
How much does integration cost in 2026?
Between 8,000 and 30,000 EUR for a platform connection covering issuance, reception and e-reporting, versus 40,000 to 120,000 EUR for a full in-house build.
Which formats must I support?
The core formats are Factur-X (hybrid PDF + XML), UBL and CII. A certified platform natively handles conversion and interoperability across these formats.
What is the monthly running cost?
Between 50 and 500 EUR/month for the platform subscription depending on invoice volume, plus 200 to 600 EUR/month of maintenance and regulatory watch if outsourced.
What happens if I am non-compliant?
A non-compliant company faces invoice rejections and penalties; the real stakes are the continuity of client collections, which is why integration should be anticipated.
Let's scope your project. Share your invoice volume, your current software and your target platform, and we will scope the connector, formats and e-reporting. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
