B2B Extranet Development Cost 2026: Scope, Security and Budget

The verdict in three sentences

A B2B extranet gives your distributors secure access to their prices, real-time stock and order placement, without going through a sales rep. Realistic 2026 budget: 18,000 to 55,000 EUR depending on modules and ERP integration, over a 10 to 16 week timeline. The gain is double: -25 % sales time on low-value tasks and the end of re-keying errors between email and ERP.

Modules of a distributor extranet

An extranet is built around the connection to your management system. Without real-time ERP integration, it is just one more static catalog.

ERP integration is the central item: it is what turns the extranet into a single source of truth, not additional double entry.

Annual saving vs email/phone process

Compare the build cost to what the manual process already costs you. Each phone order ties up a rep for 10 to 20 minutes; self-service costs a few seconds of server time.

*Based on 400 orders/month handled manually. The net annual saving is often between 25,000 and 45,000 EUR, amortizing the extranet in 12 to 20 months.

Security: non-negotiable in B2B

An extranet exposes sensitive data (prices, margins, outstanding balances). Plan two-factor authentication, access logging, compliant hosting and strict per-distributor isolation. This item (2,500-6,000 EUR) is not optional: a leaked price grid can cost far more than the extranet itself.

Mini case study

Nicolas, sales director of an equipment wholesaler in Montpellier, had about 480 orders per month handled by 3 reps, 60 percent of it repetitive tasks (checking stock, re-keying email orders). He invested 34,000 EUR in a Standard extranet connected to his ERP (personalized pricing, real-time stock, order placement, 2FA). Result at 8 months: -24 % sales time on low-value tasks, i.e. about 0.7 FTE redeployed to prospecting, valued at 26,000 EUR/year. Data-entry errors dropped from 4.2 % to 0.4 %, avoiding about 8,000 EUR/year in credit notes and disputes. Net payback: about 14 months.

FAQ

What is the difference between an extranet and a client portal? A client portal is mainly for viewing (invoices, documents); a distributor extranet is transactional (ordering, seeing stock, negotiated prices). An extranet almost always includes a real-time ERP connection.

Is ERP integration mandatory? For a useful extranet, yes. Without it, your stock and prices are frozen and your teams re-key orders: you add work instead of removing it. This is the item not to sacrifice.

How long to deploy? Allow 10 to 16 weeks depending on ERP complexity and module count. Connecting to a proprietary or legacy ERP often adds 2 to 4 weeks.

How do we handle different prices per distributor? Via per-account price grids synced with the ERP. Each distributor sees only their negotiated terms, avoiding leaks and billing errors.

What maintenance budget? Allow 1,500 to 4,000 EUR/year for hosting and monitoring, plus an evolution package. The security item (updates, monitoring) must stay funded continuously, not once and for all.

Let's scope your project. Number of distributors, monthly order volume, ERP to connect: give us those figures and we calculate the annual saving and a quote. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.