The verdict in three sentences
A professional supplier extranet costs 45,000 to 100,000 EUR ex. VAT in 2026 over 14 to 20 weeks, most of the price coming from ERP integration and fine-grained role management. For a mid-market firm handling hundreds of suppliers, it turns email orders and tenders into traceable flows, cutting processing time by 30-40 %. A senior developer day rate (500 to 700 EUR) structures the quote: fewer days through tight scoping means less budget drift.
What a supplier extranet costs
Price follows the number of flows (orders, tenders, invoices, quality) and the depth of ERP connection.
| Scope | Functions | Price ex. VAT | Timeline |
|---|---|---|---|
| Orders extranet | Supplier portal, orders, statuses | 45,000-58,000 EUR | 14-16 wks |
| Procurement extranet | + tenders, bid comparison | 60,000-78,000 EUR | 16-18 wks |
| Full extranet | + quality tracking, non-conformities, ERP API | 82,000-100,000 EUR | 18-20 wks |
| ERP connector (SAP/Oracle/Sage) | Real-time two-way API | 9,000-20,000 EUR | included/option |
| Annual maintenance | Support, evolutions, security | 15-18 % of build | ongoing |
Cost is driven by the day rate: a 90,000 EUR project is about 150 to 160 person-days at 550-600 EUR. Each extra ERP flow adds 15 to 30 days.
Why ERP integration drives the price
Without ERP connection the extranet is a form; with it, it becomes a cornerstone of the procurement system.
| Item | Without ERP API | With ERP API |
|---|---|---|
| Order entry | Manual, double entry | Auto-synchronized |
| Processing time | 3-5 days | 1-2 days |
| Error rate | 5-8 % | < 1.5 % |
| Supplier status tracking | By email | Real-time in the portal |
| Integration cost | 0 EUR | 9,000-20,000 EUR |
| Estimated annual gain | Low | High (see case study) |
Role-based security (buyer, supplier, quality officer, admin) and access logging are non-negotiable for a sensitive procurement flow.
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Mini case study
Nadia, procurement director of an industrial mid-market firm in Grenoble, manages 600 active suppliers and processes 1,200 orders a month. Previously each order took 45 minutes (entry, chasing, status). She invests 88,000 EUR ex. VAT in a full extranet with ERP API, delivered in 19 weeks.
With ERP synchronization the average time drops to 27 minutes (-40 %), i.e. 18 minutes saved x 1,200 = 360 hours/month. At a loaded cost of 42 EUR/h, that is 15,120 EUR/month, or 181,000 EUR/year. The investment, maintenance included (about 14,000 EUR/year), pays back in under 8 months, on top of fewer order errors.
FAQ
What is the timeline for a supplier extranet? From 14 to 20 weeks in 2026 depending on flows and target ERP. A simple orders extranet ships in 14-16 weeks; add tenders and quality tracking to reach 18-20 weeks.
How is price derived from the day rate? The quote multiplies estimated person-days by the senior day rate (500-700 EUR in 2026). A 150-day project at 580 EUR is about 87,000 EUR; precise scoping reduces days and therefore price.
Must we connect the ERP? Not at launch, but ERP integration is what halves processing time and removes double entry. It is the highest-ROI item, for 9,000 to 20,000 EUR.
How do we secure supplier access? Strong authentication, granular role management, per-supplier data partitioning and logging. Plan a security audit before going live.
Can tenders be managed inside it? Yes: tender publication, sealed bid submission, automatic comparison and awarding. This module typically adds 15,000 to 25,000 EUR to the build.
Let's scope your project. Tell us your flows (orders, tenders, quality), your ERP and your supplier count, and we estimate person-days, day rate and maintenance. 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.
