The verdict in three sentences
A custom partner extranet in Amsterdam in 2026 costs 30,000 to 90,000 EUR, over a 3 to 6 month timeline. The key items are SSO, granular role management and ERP integration to show stock and negotiated prices in real time. ROI comes from moving distributors to self-service: fewer calls, fewer emails, more autonomous B2B orders.
How much an extranet costs in 2026
Price depends on the number of B2B features and the depth of ERP integration. Here are the Amsterdam ranges (2026 order of magnitude).
| Extranet tier | Scope | Price | Timeline |
|---|---|---|---|
| Essential | Auth, documents, negotiated-price catalog | 30,000 - 45,000 EUR | 3 - 4 months |
| Standard | + online orders, tracking, roles | 48,000 - 68,000 EUR | 4 - 5 months |
| Advanced | + SSO, real-time ERP integration, multi-entity | 70,000 - 90,000 EUR | 5 - 6 months |
| Complex custom | + configurator, EDI, approval workflows | 90,000 EUR and up | 6 months and up |
ERP integration (stock, pricing, orders) is the decisive item: depending on the available API, it accounts for 10,000 to 25,000 EUR on its own.
ROI: what self-service saves
An extranet turns hours of manual order handling into automated flows. Here are the typical gains (2026 estimate).
| Gain area | Before extranet | After extranet |
|---|---|---|
| Order calls/emails | 5 - 8 per order | 0 - 1 per order |
| Internal entry time | 12 - 20 min/order | 1 - 3 min/order |
| Order errors | 4 - 8% | < 1% |
| Catalog availability | Business hours | 24/7 |
| Processing cost | 6 - 12 EUR/order | 1 - 2 EUR/order |
Across several thousand orders a year, the drop in processing cost alone often pays back the extranet in 12 to 20 months.
Mini case study
Karim, sales director of a 60-employee manufacturer in Amsterdam, handles 7,000 B2B orders a year across 90 distributors. Each order takes ~15 minutes of internal entry and several emails, a processing cost of about 9 EUR/order, or 63,000 EUR/year. A Standard extranet at 62,000 EUR cuts that to ~2 EUR/order, i.e. 14,000 EUR/year: a saving of ~49,000 EUR/year. The extranet pays back in a little over a year, and his distributors now order 24/7 without calling.
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FAQ
Custom extranet or B2B e-commerce portal?
A standard B2B e-commerce portal fits if your needs are classic. As soon as you have per-client negotiated prices, complex roles and deep ERP integration, custom is more suitable and often cheaper at scale.
Is SSO essential?
For a partner extranet it is strongly recommended: it simplifies access and strengthens security. Budget 3,000 to 8,000 EUR for a clean setup.
How long to integrate our ERP?
2 to 4 weeks if the API is available and documented, longer otherwise. Plan a technical audit upfront to confirm feasibility and cost.
Can we handle per-distributor negotiated prices?
Yes, that is a core extranet use case. Each partner sees their prices, discounts and terms, managed dynamically via the ERP or admin.
What maintenance budget should I plan?
Maintenance of 12 to 18% of the build per year covers fixes, security and evolutions. On a 62,000 EUR extranet, that is 7,500 to 11,000 EUR/year.
Let's scope your project. Tell us your order volume, ERP and indicative budget; we will price the extranet and its ROI. 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.
