The verdict in three sentences
A custom business platform for a mid-sized Amsterdam company costs €55,000 to €140,000, delivered in phases over 6 to 12 months. The line item that derails projects isn't development but data migration and change management. A phased delivery with an intermediate go-live at phase 1 secures ROI and avoids the tunnel effect.
What does a business platform cost in Amsterdam in 2026?
Price depends on the number of modules and the depth of integration with your existing systems. Here are the 2026 orders of magnitude at €600 to €800/day with a dedicated team.
| Scope | Modules | 2026 cost | Timeline |
|---|---|---|---|
| Core platform | 1-2 modules, auth, roles | €55,000 – €75,000 | 4 – 6 months |
| Business platform | 3-4 modules, reporting, API | €85,000 – €115,000 | 6 – 9 months |
| Extended platform | 5+ modules, ERP integrations | €115,000 – €140,000 | 9 – 12 months |
| Data migration | Excel/legacy migration | €8,000 – €25,000 | 3 – 8 wks |
| Annual maintenance | Support + enhancements | €12,000 – €30,000/yr | ongoing |
The core (phase 1) must go live within 4 months: that's what turns a cost into an asset.
How do you phase the project?
Phasing protects cash flow and team morale. Each phase delivers standalone, measurable value.
| Phase | Deliverable | Indicative budget | Immediate value |
|---|---|---|---|
| Phase 0 — Discovery | Framing, mockups, backlog | €8,000 – €12,000 | Reliable estimate |
| Phase 1 — Core | Auth, master data, 1 module | €28,000 – €42,000 | No more double entry |
| Phase 2 — Business | Workflows, reporting | €25,000 – €38,000 | Automated reporting |
| Phase 3 — Integrations | ERP, accounting, third-party API | €20,000 – €35,000 | Unified systems |
| Phase 4 — Adoption | Training, adjustments | €8,000 – €15,000 | Adoption > 80 % |
A typical dedicated team (1 PO, 2 devs, 1 part-time UX) costs roughly €28,000 to €40,000 per 6-8 week phase.
Mini case study
Sarah, COO of a 140-person logistics firm in Amsterdam, runs 9 shared Excel files for operations tracking. A core platform plus module at €90,000 over 7 months centralizes the data. Measured gains: 18 hours/week of re-keying eliminated (about €35,000/year loaded), a 70 % drop in stock errors, and decisions made on reliable real-time data rather than at D+3. Estimated payback in 26 months, excluding qualitative management gains.
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FAQ
Why not just buy off-the-shelf software?
Standard packages cover 60-70 % of the need but impose their processes. Custom is justified when your processes are a competitive advantage, or when no vendor covers your niche without costly configuration.
Is data migration really a budget risk?
Yes: inconsistent Excel data (duplicates, formats, empty fields) can represent 15 to 25 % of the project budget. A data audit in phase 0 avoids nasty surprises and firms up the estimate.
How long before we leave spreadsheets behind?
With disciplined phasing, phase 1 (core) removes critical double entry in 4 to 6 months. The full platform follows over 6 to 12 months depending on module count.
How do you guarantee team adoption?
Change management must start at discovery: user workshops, identified key users, training in phase 4. A technically successful but unadopted project is an economic failure.
What maintenance budget should we plan afterward?
Expect 15 to 20 % of the build cost per year in maintenance, i.e. €12,000 to €30,000/year, covering fixes, version upgrades and minor enhancements.
Let's scope your project. Describe your priority modules, the volume of data to migrate and your indicative budget (€55-140k), and we'll propose a phased delivery with measurable ROI. 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.