The verdict in three sentences
A supplier extranet for a manufacturer in Berlin costs between 35,000 and 90,000 EUR in 2026, depending on the number of connected suppliers and the ERP integration depth. Budget 4 to 7 months and 700 to 1,500 EUR/month of maintenance. The gains are measurable: -60 % data-entry errors and -30 % on the order cycle.
Costing by functional block
The cost is driven by integration with the existing ERP (SAP, Sage, Microsoft Dynamics) and by structured data exchange (EDI). Here are the 2026 ranges for an industrial project.
| Block | 2026 range (EUR) | Indicative timeline |
|---|---|---|
| Supplier portal + roles/permissions | 6,000 - 14,000 | 3 - 5 wks |
| Order management and acknowledgements | 8,000 - 18,000 | 4 - 6 wks |
| EDI connector / structured exchange | 7,000 - 20,000 | 4 - 8 wks |
| ERP integration (API, stock sync) | 9,000 - 25,000 | 5 - 9 wks |
| Quality tracking, documents, certificates | 4,000 - 10,000 | 2 - 4 wks |
| Reporting and delay alerts | 3,000 - 8,000 | 2 - 3 wks |
| Typical project total | 35,000 - 90,000 | 4 - 7 months |
A mid-sized plant with 40 to 80 active suppliers typically targets 58,000 EUR, ERP integration included.
Quantified gains and recurring costs
Digitizing supplier exchanges is justified by fewer re-keyings and a faster cycle. Here is the typical impact measured in year one.
| Indicator | Before | After extranet |
|---|---|---|
| Data-entry errors / month | 45 | 18 (-60 %) |
| Average order cycle | 6.5 days | 4.5 days (-30 %) |
| Processing time per order | 22 min | 9 min |
| Supplier disputes / quarter | 30 | 12 |
| Monthly hosting + maintenance | - | 900 - 1,900 EUR |
Mini case study
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Laurent, procurement director of a 90-employee manufacturer near Berlin, handles 850 supplier orders per month. Each order takes 22 minutes of entry and checking, and re-keying errors generate 45 disputes to fix each month.
He invests 58,000 EUR in an extranet integrated with his ERP, plus 1,300 EUR/month of maintenance and hosting. Processing time drops to 9 minutes per order: across 850 orders the team saves 184 hours/month, valued at 38 EUR/hr, i.e. 6,992 EUR/month. Net of maintenance (1,300 EUR), the gain reaches 5,692 EUR/month. The 58,000 EUR investment pays back in about 11 months, before even counting fewer disputes and better delivery times.
FAQ
Why does a supplier extranet cost more than a simple portal? Because most of the budget goes into ERP integration and structured exchange (EDI), which represent 40 to 50 % of the total. These are the blocks that remove re-keying.
How long to connect my first suppliers? The core (portal + orders) is live in 3 to 4 months; EDI and full ERP integration follow, for a total project of 4 to 7 months. A pilot with 5 suppliers validates the flow before rollout.
Is integration with SAP or Sage possible? Yes, via APIs or middleware connectors. Budget 9,000 to 25,000 EUR depending on sync depth (orders, stock, invoices) and the availability of ERP-side interfaces.
How many suppliers can the platform handle? The core handles from 20 to several hundred suppliers with no extra technical cost. The cost varies mainly with the number of different flows to integrate, not the number of accounts.
What annual maintenance budget should I plan? Between 8,400 and 18,000 EUR of maintenance, plus hosting. It covers ERP changes, new EDI formats and support for onboarded suppliers.
Let's scope your project. Tell us your ERP, your monthly order volume and the number of suppliers to connect, and we will frame an integrated, profitable extranet. 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.
