The verdict in three sentences
A full B2B partner extranet costs between EUR 25,000 and 60,000 in 2026, over a 10 to 16 week timeline. The budget is driven by ERP integration (catalogue, pricing, stock) and by granular distributor role management. Deployed properly, it automates order entry and cuts calls to the sales desk by 30 to 40%.
The modules of a distributor extranet
Unlike a simple client area, a B2B extranet must handle account-negotiated pricing, real-time stock and a full order cycle.
| Module | Purpose | Indicative cost (EUR) |
|---|---|---|
| Authentication + roles/permissions | Per-distributor access, multi-user | 4,000 - 7,000 |
| Catalogue with account pricing | Negotiated prices, volume discounts | 5,000 - 10,000 |
| Real-time stock | ERP sync, availability by warehouse | 4,000 - 9,000 |
| Order entry / B2B cart | Purchase orders, quick reorder | 5,000 - 11,000 |
| History + delivery tracking | Statuses, delivery notes | 3,000 - 6,000 |
| Sales dashboard | Outstanding, volumes, follow-ups | 3,000 - 6,000 |
The core modules (roles + catalogue + stock + orders) already put the foundation between EUR 18,000 and 37,000.
ERP integration and total cost of ownership
This is the item that tips the budget. Depending on the ERP (SAP, Sage, Cegid, Odoo) and whether an API exists, integration varies widely.
| ERP scenario | Complexity | 2026 integration cost (EUR) | Added time |
|---|---|---|---|
| Modern documented REST API | Low | 3,000 - 6,000 | 1 - 2 wks |
| Standard connector (Odoo, Sage) | Medium | 6,000 - 12,000 | 2 - 4 wks |
| Legacy ERP, file export | High | 10,000 - 20,000 | 4 - 8 wks |
| Dedicated middleware / bus | Very high | 15,000 - 30,000 | 6 - 10 wks |
On top of this, budget 15%/year maintenance of the build, roughly EUR 3,750 to 9,000/year, and hosting of EUR 150 to 400/month for a multi-distributor load.
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Mini case study
Thomas, sales director of an industrial supplies wholesaler in Amsterdam, manages 120 distributors. Every week his 4 sales reps spend nearly 25% of their time keying in orders received by phone and email. An extranet at EUR 42,000 (with a Sage connector at EUR 9,000) automates 60% of orders. By freeing the equivalent of 1 sales FTE (about EUR 48,000 loaded/year), the return on investment is reached in around 11 months, before counting the drop in data-entry errors.
FAQ
How long to deploy a distributor extranet? Expect 10 to 16 weeks, with ERP integration the main factor extending the schedule. An ERP with a documented API can push the project toward the lower end.
Can we manage different pricing per distributor? Yes, that is the very heart of a B2B extranet: per-account price lists, volume discounts and negotiated terms apply automatically to the cart.
What maintenance budget? Expect 15%/year of the development cost, i.e. EUR 3,750 to 9,000/year, for fixes, version upgrades and ERP changes.
Does everything need real-time sync? No. Stock and orders benefit from real time, but the catalogue and pricing can sync hourly or overnight, which lowers integration cost.
Does an extranet replace sales reps? No, it frees them from data-entry tasks to focus on relationships and account growth, raising the value each rep delivers.
Let's scope your project. Tell us your ERP, your number of distributors and a target budget between EUR 25,000 and 60,000. 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.
