Every business owner considering custom software investment asks the same question: "How much does it cost?" The honest answer is that there is no fixed price — but that's not an evasive answer. It's the truth, and in this article I'll explain why, and give you concrete ballparks for 2026.
Why is there no fixed price for a custom web application?
Building a custom web application is like ordering a bespoke suit: the fabric, the cut, the finish, and your measurements all determine the price together. Two SMEs in the same sector can need very different applications. An event organiser managing 50 events per year has different needs than one handling 5 major productions annually.
What matters is not the category, but the complexity of your specific processes.
The factors that determine the price
These are the main cost-determining elements for a custom web application:
- Complexity of functionality — How many screens, processes, and business rules does the application contain? A simple registration form with email notifications is fundamentally different from a system with dynamic pricing calculations, role-based access, and management reporting.
- Integrations with external systems — Does the application need to communicate with a payment platform like Mollie, an ERP, accounting software, or another external API? Each integration adds development time and complexity.
- User management — Are there multiple types of users (admin, employee, customer) with different rights and screens? A well-thought-out permissions system takes time to build correctly.
- Multi-language support — Does the content or interface need to be available in multiple languages? This increases scope both technically and in terms of content management.
- Hosting and infrastructure — A robust cloud environment with automatic backups, monitoring, and scaling capacity requires more setup than basic hosting.
- Maintenance and further development — Is there a need for regular extensions or modifications after launch?
Realistic ballparks for 2026 (Belgian market)
The ranges below are indicative for quality, professional development in Belgium. These are not prices for cheap offshore solutions or off-the-shelf plugins.
- €4,000 – €10,000 — Simple applications: a registration system, a simple CMS to manage your own content, or a basic admin panel. Few integrations, limited complexity. Typical examples: event registration with payment, or a simple menu management tool for a hospitality business.
- €10,000 – €30,000 — Moderately complex applications: multiple modules, one or two integrations, user management, reporting. This is the most common segment for Flemish SMEs wanting to automate a specific internal process.
- €30,000+ — Complex business applications: full automation of multiple business processes, integrations with several external systems, advanced reporting and dashboards, or multilingual interfaces for larger teams.
The better question: how much does it cost NOT to do it?
Business owners who hesitate about the investment rarely ask the reverse question. If your team spends 10 hours per week on manual tasks that could be automated, you're losing more than €20,000 in productive capacity annually — and that's a conservative estimate. A web application that solves this pays for itself in less than two years and continues to deliver value thereafter.
Beyond that: manual processes don't scale. They become a bottleneck the moment your business grows. The cost of continuing to do what you've always done grows with your business.
How Peak Web Apps determines a price
At Peak Web Apps, every project starts with a strategy call. In that conversation, I analyse your current processes, identify the pain points, and calculate together with you the time savings and capacity gains a custom application would deliver. Based on that, I provide a concrete proposal — no vague "depends on the scope" answers, but a clear budget with a defined scope.
Want to know what a web application would cost for your specific situation? Book a no-obligation strategy call.