The verdict in three sentences
A custom supplier extranet for a Berlin manufacturer costs 38,000 to 85,000 EUR in 2026, depending on the modules (RFQ, catalogue, order tracking) and the depth of the ERP connector. Expect a 12 to 18 week project and maintenance of 15 to 18 %/year. The main gain: -40 % order processing time and full traceability of tenders.
Cost per module
A procurement extranet revolves around the supplier relationship: consultation, ordering, tracking. Here are the 2026 ranges for custom development.
| Module | Scope | Indicative 2026 cost (EUR) |
|---|---|---|
| Core + supplier accounts | Onboarding, roles, MFA | 7,500 - 13,000 |
| RFQ module (tenders) | Consultation, responses, comparison | 8,500 - 17,000 |
| Catalogue & pricing | References, negotiated prices | 6,500 - 13,000 |
| Order tracking | Statuses, acknowledgements, deliveries | 6,500 - 14,000 |
| Documents & certifications | Contracts, ISO standards, attestations | 4,500 - 8,500 |
| Procurement dashboard | Supplier KPIs, disputes | 4,500 - 9,500 |
An RFQ + order tracking core starts around 38,000 EUR. A full extranet with catalogue, documents and an ERP connector reaches 75,000 to 85,000 EUR.
ERP connector, permissions and maintenance
An extranet's value comes from its synchronisation with the ERP (SAP, Sage X3, Dynamics) and fine-grained permission management. These items shape total cost over time.
| Item | Detail | 2026 order of magnitude |
|---|---|---|
| ERP connector | Orders, items, stock (two-way) | 11,000 - 24,000 EUR |
| Role and permission management | Per company, per buyer, per site | 4,500 - 10,000 EUR |
| Secure EU hosting | Server, backups, monitoring | 270 - 750 EUR/month |
| Maintenance | Fixes, evolutions, support | 15 - 18 %/year of budget |
| Security audit | Annual penetration test | 3,500 - 6,500 EUR/year |
For a 65,000 EUR project, maintenance represents 9,750 to 11,700 EUR/year.
Mini case study
Sarah, procurement director of a 220-employee manufacturer in Berlin, managed 180 suppliers by email and spreadsheets. Processing one order took on average 3.5 days (entry, approval, chasing). Across 1,400 orders/year, this heavily occupied two buyers. An extranet at 66,000 EUR (RFQ + catalogue + tracking + ERP connector) brought processing down to 2.1 days, a -40 % cut. By freeing the equivalent of 0.7 FTE (estimated loaded cost 52,000 EUR/year), savings reach around 36,000 EUR/year, plus better negotiation through RFQ comparison. Estimated payback in under 24 months.
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FAQ
Does a supplier extranet replace the ERP?
No, it complements it on the supplier side. The ERP stays the source of truth; the extranet exposes the right flows (RFQ, orders, documents) via a connector without exposing the whole system.
Which item costs the most?
The ERP connector, between 11,000 and 24,000 EUR, because it depends on the vendor's openness and the number of synchronised flows (items, prices, orders, stock).
How many suppliers can we manage?
No technical limit. Cost depends on roles and permissions: the finer the segmentation (per site, per purchasing family), the larger the permissions module.
How do we measure ROI?
Along three axes: reduced processing time, fewer disputes and errors, and purchasing gains via RFQ competition. An integrated procurement dashboard tracks these KPIs continuously.
Will suppliers adopt it?
Yes, if onboarding is simple: email invitation, clear interface, notifications. Plan a 2 to 4 week support phase to onboard your main suppliers.
Let's scope your project. Tell us your key modules (RFQ, catalogue, tracking), your ERP and your annual order volume, and we'll frame an indicative budget between 38,000 and 85,000 EUR. 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.
