The verdict in three sentences
A bespoke supplier extranet costs between 25,000 and 55,000 EUR in Berlin in 2026, delivered in 4 to 6 months, with validation workflows, document uploads and ERP integration. It replaces the mess of emails and spreadsheets with a single, traceable channel for your 50+ suppliers. Measured result: -40 % emails and full traceability of orders, documents and disputes.
Features, cost and administrative savings
A strong procurement extranet is built around three flows: orders and acknowledgements, document exchange (quotes, certificates, invoices), and dispute management. Each flow removes dozens of hours of manual chasing.
| Feature | Indicative cost | Admin savings |
|---|---|---|
| Order portal + acknowledgements | 6,000-12,000 EUR | -30 h/month |
| Upload and document vault | 4,000-9,000 EUR | -20 h/month |
| Validation workflow | 5,000-11,000 EUR | -15 h/month |
| Dispute management | 4,000-8,000 EUR | -12 h/month |
| ERP integration | 6,000-15,000 EUR | -25 h/month |
| MVP total | 25,000-55,000 EUR | ~100 h/month |
These figures are a 2026 order of magnitude, excluding hosting (100 to 300 EUR/month) and annual maintenance (15 to 20 % of the build).
Why bespoke rather than an ERP module
Many ERPs offer a supplier module, but it is rigid and often billed per seat. A dedicated extranet fits your procurement processes, opens up to external suppliers without heavy licensing, and connects to your ERP without replacing it.
| Criterion | ERP module | Bespoke extranet |
|---|---|---|
| Cost per supplier | Per-seat license | Unlimited free access |
| Fit to processes | Low | Full |
| Supplier experience | Complex | Simple and guided |
| Time to launch | 6-12 months | 4-6 months |
| Year 1 cost (50 suppliers) | 30,000-90,000 EUR | 25,000-55,000 EUR |
| Scalability | Vendor-constrained | Unlimited |
At 50 active suppliers, a per-seat ERP module quickly becomes more expensive than the dedicated extranet, while offering a less fluid experience.
Mini case study
Sophie, procurement manager at an industrial SME in Berlin, managed 62 suppliers with an average of 900 emails per month of orders, chasers and documents. Two buyers spent around 110 hours monthly on it.
After a 42,000 EUR extranet with a validation workflow and a connection to their Sage ERP, email volume dropped 40 % (-360 emails/month) and admin time by ~45 hours per month. At a loaded cost of 32 EUR/hour, that is 1,440 EUR/month saved, a payback of around 29 months, before counting restored reliability on certificates and dispute traceability.
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FAQ
How much does a bespoke supplier extranet cost in 2026?
Between 25,000 and 55,000 EUR in Berlin for an MVP, depending on the number of flows (orders, documents, disputes) and the depth of ERP integration.
How long to deliver?
Budget 4 to 6 months, scoping and acceptance included. ERP integration is usually the factor that extends the timeline.
Can you connect our existing ERP?
Yes: Sage, SAP, Cegid, Dynamics. Integration accounts for 20 to 30 % of the budget but removes double entry and makes stock and invoices reliable.
Do suppliers have to pay a license?
No. Supplier access is unlimited and free on the platform side, unlike per-seat ERP modules. You only pay for the build and maintenance.
What time savings can we realistically expect?
An order of magnitude of 80 to 110 hours per month for a base of 50 to 65 suppliers, thanks to the removal of manual chasing and re-entry.
Let's scope your project. Tell us your number of suppliers, your ERP and an indicative budget (25,000-55,000 EUR): we'll scope the priority flows. 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.
