Every order that arrives by email or phone takes 5 to 15 minutes to key into the ERP by hand, and between 2% and 5% end up with a wrong reference, quantity or price. A B2B order portal removes that work: each customer logs in, sees their own catalogue and prices, places the order and it lands straight in your system. It costs 3,000 to 12,000 EUR. Here is when it pays off.
What is a B2B customer order portal and how does it work?
A B2B order portal is a private web application where your trade customers log in, see the catalogue with their agreed terms and place orders without phoning or writing an email. Unlike a public online shop, each customer sees their own prices, volume discounts and usual references. Orders arrive in your ERP already validated, with no manual keying and no guessing at an email typed in a hurry from a phone on site.
It makes most sense for manufacturers and distributors with recurring customers: hardware shops restocking every week, installers repeating the same 40 references, retailers placing the same monthly order with small variations. If 70% of your orders are repeats, you are paying someone to copy data the customer already knew. In a 15-person SME that work typically consumes 10 to 25 admin hours per week.
Which features do manufacturers and distributors actually need?
The critical feature is customer-specific pricing. In B2B almost nobody buys at list price: there are negotiated discounts, volume rates and terms built up over years of trading. The portal has to read those conditions from your ERP and show each customer exactly their own deal, because if the price on screen does not match the invoice, that customer stops using the portal in week two and goes back to the phone.
The second block is self-service: order history with one-click reordering, shipment status, and downloadable invoices and delivery notes. That alone removes half the calls asking you to resend an invoice from March. Everything rests on the ERP or CRM integration: stock, prices and orders must sync on their own. A typical integration with Sage, Odoo or a sector-specific ERP costs 1,500 to 4,000 EUR within the project.
How much does a B2B order portal cost in 2026?
A custom B2B portal for an SME costs between 3,000 and 12,000 EUR depending on scope. At the lower end, 3,000 to 5,000 EUR buys a portal with catalogue, per-customer pricing, ordering and history, connected to an ERP with an accessible API and delivered in 3-6 weeks. The upper range, 8,000 to 12,000 EUR, covers portals with multiple warehouses, complex price lists, online payments or a legacy ERP without an API, delivered in 2 to 4 months.
Three variables move the budget more than anything else: the ERP (a documented API makes the project cheaper, a 2008 system without one means building a connector), the complexity of your price lists, and the number of flows, meaning orders only, or also returns, quotes and payments. Always ask for a fixed price per phase. A 4,000 EUR portal live within a month is worth more than a 12,000 EUR project that takes six months to launch.
When does it pay off compared with email and phone orders?
Run the numbers with your own data. If you receive 30 orders a day by email and each one takes 10 minutes to key in, that is 5 hours of admin work per day, roughly 2,200 EUR a month in labour cost. If the portal absorbs half of those orders, you save over 1,000 EUR a month and a 6,000 EUR portal pays for itself in under 6 months, before counting the errors that disappear.
An industrial supplies distributor with 12 employees moved 60% of its recurring orders to a portal of this kind. The first-quarter result: 30% fewer order errors (wrong references, misread quantities, outdated prices) and around 15 admin hours per week freed up for commercial work. An order error in B2B does not just cost the return: it costs the transport, the urgent replacement and part of the customer's trust.
Custom portal or a B2B platform like Shopify?
Shopify, PrestaShop or WooCommerce with B2B modules can work if your catalogue is simple and you have few price lists. Problems start with real B2B complexity: customer-specific prices inherited from years of negotiation, sales by box and by pallet, sector ERPs with no official connector. Every exception means another plugin, and with 5 or 6 plugins the annual maintenance eats the initial saving. We compare both routes in detail in custom ecommerce development vs Shopify.
The practical rule is simple. If you also sell to the general public and your pricing logic fits a standard platform, start there. If your business is 100% B2B, with per-customer terms and deep ERP integration, custom development works out cheaper over 3 years: no per-user licences, no fighting module limitations, and the code is yours, with no compulsory monthly fee to keep it running.
How do you launch the project without risk?
The lowest-risk path starts with a technical audit: reviewing your ERP, your price lists and your current order flow to establish which integration is feasible and what the project will really cost. With that diagnosis, launch a pilot with 10 or 20 regular customers and the core catalogue. If the pilot works, the portal grows in phases, each with its price fixed before work starts.
Before signing with any supplier, demand three things: a fixed price agreed before the project starts, rather than hourly estimates that stretch; full ownership of the code, with no compulsory monthly licences; and the same senior engineer quoting and building. That is how ASD Solutions works, with a senior in-house team in Spain and no subcontracting. Typical B2B portals come in at 3,000 to 12,000 EUR, delivered in 3 weeks to 4 months depending on scope.
Frequently asked questions
How long does it take to build a B2B order portal?
An initial portal with catalogue, per-customer pricing and ordering, connected to an ERP with an API, is delivered in 3-6 weeks. If the ERP has no API, or you need online payments or multiple warehouses, expect 2-4 months. Working in phases gets your first customers ordering online within the first month.
Can it connect to my current ERP even if it is old?
Yes. If it has an API, a typical integration costs 1,500-4,000 EUR. If it does not, the portal can sync through intermediate files, direct database reads or scheduled exports. That is the first thing we check in the 190 EUR audit: which integration routes your system offers and which one makes sense.
What if my customers refuse to use the portal?
That is the real project risk, and it can be managed: start with 10-20 recurring customers, keep email as a parallel channel and give them reasons to log in, such as order history, invoices and one-click reordering. Distributors that follow this approach typically move 50-60% of recurring orders to the portal within 3-6 months.
How much does it cost to maintain a B2B portal per year?
A technical retainer from 500 EUR per month covers monitored hosting, security updates, small improvements and support. Many SMEs switch to one-off fixes from 300 EUR once the portal is stable. As a reference, budget 10% to 20% of the initial build cost per year.
Will I own the portal or depend on the supplier?
With our model, the code and the data are yours from the first invoice, with no vendor lock-in. You can change supplier or maintain it with an in-house developer. Be wary of "free" portals with a monthly fee: at 300 EUR per month that is 10,800 EUR over 3 years and you never own the asset.
