Connecting Microsoft Dynamics 365 Business Central to a B2B Webshop in Berlin: Cost (2026)

The verdict in three sentences

For a Berlin wholesaler, integrating Microsoft Dynamics 365 Business Central with a B2B webshop costs €15,000 to €35,000 net in 2026, plus around €250 to €600 a month for monitoring and changes. The price depends on how many data flows you sync, how complex your customer pricing is and how robust the error handling must be. The accounting side matters as much as the shop: orders and invoices must land cleanly in Business Central so your DATEV export to the tax adviser stays reliable.

Pricing each data flow

Business Central exposes standard APIs, and extensions can add custom endpoints, so most webshops can be connected without touching the core ERP. The cost lies in mapping your own data: customer price groups and line discounts, item variants, multiple locations and the order statuses your buyers expect to see.

Germany adds a compliance layer. Records that matter for tax must remain complete, traceable and unaltered under the GoBD principles, which in practice means the ERP stays the system of record and the webshop never edits posted documents. Customer accounts on the shop are personal data under the GDPR, so logins, consent and retention rules need to be scoped too.

A connector covering items, stock and orders with simple pricing lands near €15,000. Complex discount structures, several warehouses and invoice visibility push you towards €35,000.

Off-the-shelf, middleware or custom

Your choice should follow how standard your commercial rules are. Rank options on three-year cost, how well they handle your price logic and whether your team can see and replay failed messages.

Market figures are 2026 ballparks; Kolonell's prices come from its public price list. Whatever you choose, require a message log, one-click replay of failed messages and an alert when the sync stalls for more than 15 minutes.

Mini case study

Illustrative example: Katrin, Head of IT at an electrical supplies wholesaler in Berlin, gets 900 webshop orders a month that her inside sales team rekeys into Business Central at 7 minutes each. About 1.5 % of orders include an item shown in stock that had already sold out, costing roughly €50 per incident in calls, substitutions and credit notes.

With a €26,000 connector and €400 a month of support: 10,800 orders × 7 minutes = 1,260 hours of rekeying removed, worth €52,920 at €42 per loaded hour. Stock synced every 10 minutes prevents 85 % of the 162 yearly incidents, saving about €6,900. After €4,800 of annual support, the net gain is around €55,000 a year and the connector pays back in under 6 months.

FAQ

How much does it cost to connect Business Central to a B2B webshop?

Budget €15,000 to €35,000 depending on the number of flows and pricing complexity, as a 2026 market ballpark. Add €250 to €600 a month for monitoring and small changes.

How often should stock sync?

Every 5 to 15 minutes is enough for most wholesalers. Second-by-second sync costs more in API usage and infrastructure and only pays off for very fast-moving items.

What happens to DATEV if orders come from the webshop?

Nothing changes, provided orders are posted in Business Central as usual and the DATEV export runs from there. The webshop should never generate tax documents on its own, which keeps your GoBD documentation simpler.

Why 6 to 10 weeks?

Pricing analysis and field mapping take 2 to 3 weeks. Testing with real orders and 10 pilot customers then prevents price discrepancies in production.

Do we need a new ERP to sell online?

No, Business Central already exposes the data you need through its APIs. Replacing an ERP typically costs 5 to 10 times more than a connector and is rarely justified by ecommerce alone.

Let's scope your project. Tell us your Business Central setup, your webshop platform and the flows to connect, and we will scope the connector's features, budget and timeline. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.