Custom software development in the Netherlands typically costs €75–€150 per hour, or roughly €10,000–€30,000 for a small tool, €30,000–€80,000 for a mid-sized application, and €80,000–€200,000+ for a larger platform. The exact figure depends on scope, how many systems it has to integrate with, and how much is genuinely custom versus assembled from things that already exist. Almost all of the cost is people-time — so the real question is not the hourly rate, it is how many hours the work honestly needs.
The short answer: typical price ranges
As a rule of thumb in the Dutch market:
A proof of concept or MVP — one workflow, working on real data: €15,000–€40,000.
A small internal tool or integration: €10,000–€30,000.
A mid-sized application (portal, SaaS module, custom workflow): €30,000–€80,000.
A larger platform or multi-team product: €80,000–€200,000 and up.
Freelance developers bill roughly €75–€110/hour; specialist agencies €100–€150+; the large consultancies more. Those ranges are a starting point, not a quote — the same brief can differ 3× depending on the decisions below.
What actually drives the cost
Five things move the number far more than the hourly rate:
Scope and complexity. A single-purpose tool is cheap; a product with roles, permissions, edge cases and a real UI is not. Vague scope is the most expensive thing you can buy.
Integrations. Connecting to your ERP, CRM and other APIs (AFAS, Exact, Salesforce and the like) is often half the work. Every integration is a small project of its own.
Data and AI. Machine-learning and LLM features add data preparation, evaluation and guardrails. They pay back, but they are not free — see what an AI proof of concept costs.
Design, security and compliance. A usable interface, proper authentication, GDPR and — where relevant — the EU AI Act all take real hours that a cheap quote quietly leaves out.
Team seniority. A senior team costs more per hour and far less per outcome, because they build the right thing once instead of rebuilding it three times.
Hourly, day-rate or fixed price — and why it matters
Open-ended hourly and day-rate work shifts all the budget risk onto you: if the estimate slips, you pay for it. A fixed price per stage moves that risk to the builder and forces a clear scope up front. It is the single biggest lever on what a project actually ends up costing. See how we structure fixed-price software and AI projects.
Where AI changes the cost equation
The cheapest custom software is the software you do not build. A good partner buys the boring 80% — auth, hosting, standard components, off-the-shelf models — and only builds the 20% that is genuinely yours. That is the difference between a €200,000 project and an €80,000 one for the same outcome. It is also why we work AI-first: AI, ML and LLM building blocks now cover work that used to be bespoke. For the build side of that, see our role as an AI development agency in the Netherlands.
How to keep the cost down
Three habits save the most money. One: start with a small paid audit or proof of concept before committing to a full build — a few thousand euros spent scoping prevents tens of thousands spent building the wrong thing. Two: own the code and IP, so you are never locked into one vendor. Three: keep one senior team from strategy to launch, so nothing is lost in a handover. If you want a partner who works that way, see custom software development at Crux Digits.
Frequently asked questions
How much does a custom software MVP cost in the Netherlands?
A working MVP on real data typically runs €15,000–€40,000. At Crux Digits a fixed-price proof of concept is €20,000 — a working proof of one workflow before you commit to a full build.
Should I pay hourly or agree a fixed price?
A fixed price per stage protects your budget: the builder carries the risk of a slipping estimate, and the scope has to be clear up front. Open-ended hourly or day-rate work shifts that risk onto you.
Why is custom software often cheaper than people expect?
Because most of it should not be built from scratch. A good partner buys the boring 80% — auth, hosting, standard components, off-the-shelf AI models — and only builds the differentiating 20%. That can halve the cost for the same outcome.
What does Crux Digits charge for custom software development?
Fixed steps: a €2,500 audit & strategy, a €20,000 proof of concept, and a production build from €50,000 (excl. VAT). You own the code and IP, and you know each stage’s cost up front.