What does a web app cost?
How much does it cost to get a web app built? The honest answer: it depends heavily on what you want to build. In this article we provide a complete, data-driven overview of web app development costs in the Netherlands in 2026. With market averages, worked-through scenarios, technology comparisons and cost-saving tips you won't find anywhere else, including the WBSO subsidy that almost nobody talks about.
The short answer: what does a web app cost?
Web app development costs in the Netherlands range from €10,000 for a simple dashboard to €200,000+ for an enterprise SaaS platform. Below are market averages based on Dutch hourly rates of €85–€140 per hour (agency) and €50–€130 per hour (freelancer).
| Type of web app | Price range | Lead time | Examples |
|---|---|---|---|
| Proof of Concept | €5.000 – €20.000 | 2–6 weeks | Prototype, technical validation, clickable demo |
| MVP | €15.000 – €60.000 | 6–16 weeks | First working version with core functionality |
| Standard web app | €30.000 – €100.000 | 3–8 months | Customer portal, custom CRM, project management tool |
| Complex / SaaS | €75.000 – €200.000 | 6–12 months | Multi-tenant SaaS, marketplace, real-time platform |
| Enterprise | €150.000 – €500.000+ | 9–18 months | Complex integration hub, data-intensive application |
Important: these are market averages, not Appfront rates. Actual costs depend on your specific situation. An MVP approach can reduce the initial investment by 50–70% compared with a full product.
9 factors that determine the price of a web app
The cost of a web app is not determined by a single factor, but by a combination of technical, organisational and strategic choices. Understanding these will help you estimate your budget.
Functional complexity
The number of screens, business logic and user flows largely determine development time. A web app with 5 screens is fundamentally different from a platform with 50+ views and complex workflows.
User roles and permissions
A web app where everyone sees the same thing is simpler than a system with admin, manager, employee and customer roles. Each role means separate views, permission logic and test scenarios.
UX/UI design
A functional but basic design costs less than a polished, branded experience. Good UX design costs more upfront, but saves on training, support and lost conversions.
Integrations
Integrations with CRM, ERP, payment providers or third-party APIs add €2,000–€15,000 per integration to the cost. Well-documented APIs (Mollie, Exact) are cheaper to connect than legacy systems without an API.
Security and compliance
If your web app processes personal data, GDPR measures are mandatory. Encryption, audit logging, penetration testing and compliance certification add €5,000–€20,000, but help prevent fines of up to €20 million.
Scalability
A web app for 100 users requires a different architecture than a platform for 10,000+. Microservices and cloud-native infrastructure cost more upfront, but prevent expensive rewrites later.
Lead time
A tight deadline means more developers working in parallel, which increases sprint costs. Realistic planning saves 10–20% on the total budget.
Specification quality
The better your requirements are defined, the less time is spent on assumptions and rework. A discovery phase of €3,000–€8,000 often prevents €15,000–€30,000 worth of incorrectly built features.
Technology choice
React, Vue or Angular? Node.js or Python? The choice affects not only build costs but also maintenance costs and the pool of available developers. More on this in the technology comparison section.
Cost breakdown by project phase
The costs of a web app project are spread across several phases. Understanding where the budget goes helps you set priorities and prevent scope creep.
| Phase | % of budget | On a €50K project | What you get |
|---|---|---|---|
| Discovery & planning | 10% | €5.000 | Requirements, user stories, wireframes, project plan |
| UX/UI design | 18% | €9.000 | Interaction design, visual design, design system, prototypes |
| Frontend development | 25% | €12.500 | User interface, responsive design, client-side logic |
| Backend development | 30% | €15.000 | APIs, database, authentication, business logic, integrations |
| Testing & QA | 12% | €6.000 | Unit tests, integration tests, security tests, user acceptance |
| Deployment & launch | 5% | €2.500 | Server setup, CI/CD, monitoring, documentation, go-live |
Tip: discovery may look like a small line item, but it is crucial. Organisations that skip the discovery phase spend on average 25–50% more on rework and scope changes later in the project.
Hourly rates in the Netherlands: freelancer vs. agency vs. nearshore
Your choice of development partner has a direct impact on costs. Below are the typical hourly rates in the Dutch market in 2026 (excluding VAT).
| Type of partner | Hourly rate | Advantages | Points of attention |
|---|---|---|---|
| Junior freelancer | €50 – €70 | Lowest rate | Less experience, limited architectural knowledge |
| Mid-level freelancer | €70 – €100 | Good balance of price and quality | No team, limited availability |
| Senior freelancer | €100 – €130 | Deep expertise, fast | Single point of failure, no project management |
| Development agency | €85 – €140 | Team, PM, design, QA included | Higher day rate, but a broader team |
| Nearshore (Eastern Europe) | €40 – €70 | 40–60% cheaper | Communication overhead, time zones (limited within the EU) |
Note: do not compare quotes on hourly rate alone. An agency at €120/hour that builds your web app in 400 hours (€48,000) is cheaper than a freelancer at €70/hour who takes 800 hours (€56,000). Always ask for a breakdown of hours.
Which technology do you choose, and what does it cost?
The choice of frontend framework and backend language has a direct impact on development costs, maintenance and the availability of developers. An overview of the most widely used options in the Dutch market.
Frontend frameworks compared
| Framework | Development time | Cost impact | Best for | Availability of developers in NL |
|---|---|---|---|---|
| React | Average | Benchmark | Versatile, large apps, SaaS | Very large |
| Vue.js | 10–15% faster | 10–15% lower | Mid-sized apps, rapid iteration | Large |
| Angular | 20–30% longer | 20–30% higher | Enterprise, complex forms | Average |
| Svelte | 15–20% faster | 15–20% lower | Performance-critical apps | Small (emerging) |
Backend technologies compared
| Technology | Hourly rate range | Cost advantage | Best for |
|---|---|---|---|
| Node.js | €80 – €130 | Same language as the frontend (a full-stack team is cheaper) | APIs, real-time apps, microservices |
| Python / Django | €85 – €135 | Rapid prototyping, plenty of libraries | Data-intensive, AI/ML integration |
| PHP / Laravel | €70 – €110 | Largest developer pool, lowest rates | CMS-style apps, e-commerce |
| Java / Spring | €95 – €145 | Robust, enterprise-grade | Complex business logic, fintech |
| Go | €100 – €150 | Exceptionally fast performance, low server costs | High-performance APIs, platform engineering |
Saving tip: choose a Node.js backend when your frontend is built in React or Vue. Your development team then only needs to master one programming language (JavaScript/TypeScript), which saves 15–20% on team costs.
Hosting costs: cloud providers compared
Once the build is complete, hosting and infrastructure are the largest ongoing cost. Your choice of cloud provider makes a big difference, especially for smaller web apps.
| Provider | Small (100 users) | Medium (1,000 users) | Large (10,000+ users) | Points of attention |
|---|---|---|---|---|
| AWS | €80 – €150/mo | €300 – €600/mo | €1,000+/mo | Market leader (33%), most services, complex pricing |
| Google Cloud | €60 – €120/mo | €250 – €500/mo | €800+/mo | Competitive, strong in AI/data, sustained use discounts |
| Azure | €70 – €140/mo | €280 – €550/mo | €900+/mo | Popular with Microsoft shops, good enterprise integration |
| Hetzner | €20 – €50/mo | €80 – €200/mo | €300 – €600/mo | 3–5x cheaper, EU data centres, fewer managed services |
Advice: for most Dutch web apps, Hetzner or Google Cloud offer the best value for money. Choose AWS or Azure only if you need specific managed services or your organisation already operates within that ecosystem.
Total Cost of Ownership: 3 scenarios over 5 years
The build cost is only the beginning. The true investment becomes clear once you calculate the Total Cost of Ownership (TCO) over several years. Three realistic scenarios are outlined below.
Simple web app
Dashboard or portal
Average web app
Client portal or business tool
Enterprise web app
SaaS platform or integration hub
Rule of thumb: the five-year TCO is typically 2.5 to 3.5 times the initial build cost. Factor this into your budgeting. A web app is not a one-off purchase but an ongoing investment.
Ongoing costs after go-live
After go-live, there are structural costs to keep your web app running, secure and up to date. These costs are often underestimated.
| Cost item | Per month | Per year | Explanation |
|---|---|---|---|
| Hosting & infrastructure | €50 – €500+ | €600 – €6.000+ | Cloud servers, databases, CDN, SSL, backups |
| Maintenance | €400 – €3.000 | €5.000 – €35.000 | Bug fixes, security patches, framework updates. Rule of thumb: 15–20% of build cost per year |
| Monitoring & logging | €50 – €300 | €600 – €3.600 | Uptime monitoring, error tracking, performance metrics |
| Licences & APIs | €0 – €500 | €0 – €6.000 | Third-party services, payment APIs, email services |
| Support / SLA | €300 – €2.000 | €3.600 – €24.000 | Helpdesk, incident response, availability guarantees |
The impact of AI on web app development costs in 2026
AI tools have fundamentally changed the way software is developed. But what does this mean in practice for the cost of your web app?
What AI tools deliver
Tools such as GitHub Copilot (€10/month) and Cursor (€20/month) reduce development time for routine code by 30–50%. Boilerplate code, standard CRUD operations and tests are generated more quickly. For an experienced team, this results in a net cost reduction of 15–25%.
Why rates are not falling
Despite productivity gains, agencies' hourly rates have barely decreased. The saved hours are invested in better code reviews, more testing and more complex architecture. Agencies absorb the margin. Ask explicitly how your agency uses AI tools and what that means for your project.
Realistic expectation: AI tools save 15–25% on development time for standard functionality. For complex business logic, architectural decisions and integrations, the impact is limited. The greatest gains are in prototyping and MVP development.
No-code and low-code: a cheaper alternative or a hidden cost trap?
Platforms such as Bubble, Retool and OutSystems promise rapid web app development at a fraction of the cost. The reality is more nuanced.
| Aspect | No-code / low-code | Custom web app |
|---|---|---|
| Initial costs | €0 – €350/month | €15.000 – €200.000+ |
| 5-year TCO | €21.000 – €150.000 | €71.000 – €635.000 |
| Flexibility | Limited to platform capabilities | Fully as you wish |
| Scalability | Ceiling at around 1,000 users or complex logic | Infinitely scalable |
| Ownership | Platform-dependent, vendor lock-in | 100% yours, source code under your own control |
| Migration if you want to leave | €50,000 – €250,000 to rebuild | Transferable to any team |
Our advice: no-code is fine for internal tools, prototypes and validation. But once your web app becomes a core part of your business, you want ownership of the code. The migration cost from no-code to custom (€50K–€250K) is often higher than building custom from the start.
When you're better off not commissioning a custom web app
Honest advice: not every situation calls for a custom web app. In these cases, an existing SaaS solution is often the smarter choice:
Existing SaaS covers 80%+ of your needs
If a tool such as HubSpot (CRM), Monday.com (project management), Exact (accounting) or Personio (HR) meets most of your requirements, save the €50,000+ you would spend on bespoke development. The remaining 20% is often not worth the investment.
Your processes aren't unique
If your workflow is similar to that of thousands of other businesses, there's probably already a good SaaS tool for it. Bespoke development is only worth the investment if your processes are genuinely unique or if you want to build a competitive advantage with them.
You have no budget for ongoing development
A web app is not a one-off purchase. Without a budget for maintenance and further development (15–20% per year), your web app will age quickly. If you only have budget for the build, opt for a SaaS subscription instead.
Your team won't adopt it
The best web app is worthless if your organisation doesn't use it. Set aside budget and time for training, change management and onboarding. Without user adoption, your investment is lost.
Do build it if: your processes are unique, off-the-shelf software doesn't fit, you want to create a competitive advantage, you're aiming for scalable growth, or you need full control over your data and functionality.
Hidden costs nobody talks about
Beyond the obvious costs, there are cost items that appear in almost no quote but can significantly affect your budget.
Scope creep
“Could we just add...” is the most expensive sentence in software development. Scope creep adds on average 25–50% to the original budget. Prevent this with a well-defined discovery phase and MoSCoW prioritisation.
Technical debt
Shortcuts taken during the build lead to ‘technical debt’ that becomes expensive to pay off later. Research by Atlassian shows that companies spend on average 27% of their IT budget resolving technical debt.
Data migration
If you're moving from an existing system, data migration costs €3,000–€20,000+. Think of cleaning, transforming and validating data. This is often forgotten in quotes.
GDPR compliance
Privacy by design, data processing agreements, DPIAs, cookie consent and data retention policies cost an additional €5,000–€15,000. Yet fines for non-compliance can reach €20 million or 4% of global annual turnover.
Training and adoption
Your team needs to learn how to work with the new web app. Budget €2,000–€8,000 for documentation, training and onboarding. Without investing in adoption, you'll never achieve the intended ROI.
Opportunity cost
The months you spend specifying, reviewing and testing are time you're not spending on your core business. Include these internal hours in your calculation — they don't appear on any quote, but they weigh heavily.
WBSO subsidy: save up to 40% on web app development
One of the best-kept secrets in the Dutch tech sector: the WBSO (Wet Bevordering Speur- en Ontwikkelingswerk, the Promotion of Research and Development Work Act). This government subsidy can make your web app development considerably cheaper, yet almost no development agency tells you about it.
What is WBSO?
WBSO is a tax scheme run by the Dutch Ministry of Economic Affairs, with a budget of €1.8 billion in 2026. It provides a 32% wage tax reduction on the first €350,000 of R&D wage costs (16% above that). For sole traders, an additional deduction of €15,979 applies.
When does your web app qualify?
Your project qualifies if it is technically innovative: new algorithms, a unique data architecture, innovative automation or the application of new technologies. A standard Shopify webshop won't qualify, but a custom platform with complex business logic might.
Worked example: for a web app project with €100,000 in development costs, the WBSO (Dutch R&D tax credit scheme) could save you between €25,000 and €40,000. Check with your accountant or a WBSO adviser whether your project qualifies. More information: RVO.nl/WBSO.
Custom web app vs. off-the-shelf software
The choice between building and buying is not black and white. Both options have their place, depending on your situation. Compare them honestly on the criteria that matter.
| Criterion | Custom web app | SaaS / off-the-shelf |
|---|---|---|
| Initial investment | €15K – €500K+ | €0 – €500/month |
| Cost over 5 years | Predictable, no rising licence fees | Licence fees rise, vendor lock-in |
| Flexibility | 100% to your specification, unlimited scope for expansion | Limited to the vendor's roadmap |
| Time to market | Months | Days to weeks |
| Data ownership | Fully under your own control | With the vendor, bound by export options |
| Competitive advantage | Unique to your business | Your competitors use the same tool |
8 tips to keep web app costs under control
With the right approach, you can keep costs manageable without compromising on quality.
- Start with an MVP
Build only the core functionality first. Validate with real users before investing in nice-to-haves. A minimum viable product (MVP) can save 50–70% on the initial investment.
- Prioritise with MoSCoW
Sort features into Must-have, Should-have, Could-have and Won't-have. Most scope creep comes from "could-haves" that quietly become "must-haves" during the project.
- Work in agile sprints
A working interim result every two weeks. You can steer based on progress and feedback without major budget overruns.
- Invest in discovery
A discovery phase of €3,000–€8,000 prevents €15,000–€30,000 in rework. It is better to think twice than to build twice.
- Choose proven technology
Frameworks your team has experience with lead to shorter lead times. Experimental technology costs 20–40% more due to the learning curve.
- Ask for a breakdown of hours
A quote of "€50,000" tells you very little. Ask for a breakdown by phase and by role. Compare quotes on hours × hourly rate, not just the total amount.
- Check WBSO eligibility
If your web app is technically innovative, you can save up to 40% through the WBSO. Discuss this with your accountant before the project starts.
- Include maintenance in the budget
Set aside 15–20% per year. Deferred maintenance leads to exponentially higher costs in the longer term.
Frequently asked questions about web app costs
Answers to the 12 most frequently asked questions about the cost of building a web app.
A simple web app with basic CRUD functionality, an admin panel and a few forms typically costs between €10,000 and €30,000. The exact price depends on the number of screens, the complexity of the data structure and whether integrations with external systems are needed.
A website is primarily informative and presents content to visitors. A web app is an interactive application that lets users complete tasks, enter data, view dashboards or collaborate with other users. The difference lies in the complexity of the backend, database and user authentication.
A simple web app can be live in 6 to 12 weeks. An average project takes 3 to 6 months. Complex web apps with many integrations take 6 to 12 months. An MVP approach can significantly shorten time to market.
The main cost factors are: the complexity of the functionality, UX/UI design, the number of integrations with external systems, security requirements, scalability, the chosen technology stack and the lead time. The choice between an MVP and a full product also strongly affects costs.
Yes. Budget for monthly hosting costs (€50–€500+), maintenance and updates, security patches and support. As a rule of thumb, allow 15 to 20 per cent of the initial build cost per year for maintenance. For a web app costing €50,000, that is €7,500–€10,000 per year.
Absolutely, and this is often the smartest approach. A Minimum Viable Product includes only the core functionality for your first users. This not only saves money but also gives you feedback sooner. From the MVP, you build iteratively based on real data and user insights.
A web app is typically 30 to 50 per cent cheaper than native app development, because you build a single codebase that works everywhere. Native apps require separate development for iOS and Android, double testing and double maintenance. Progressive Web Apps (PWAs) offer an app-like experience at web app costs.
Look at experience with comparable projects, the technology stack used, the way of working (agile sprints are recommended), transparency about costs and whether the agency offers maintenance after delivery. Ask for a detailed quote with an hours breakdown, and compare not only on price but also on what the quote includes.
Possibly. If your web app is technically innovative, for example through new algorithms, a unique data architecture or innovative automation, you may be eligible for WBSO. This provides a 32% payroll tax reduction on the first €350,000 of R&D wage costs. A standard webshop does not qualify.
This depends on the total costs and the number of active users. Example: for a web app with €50,000 build costs and €14,000 annual costs, with 200 users, you pay roughly €27 per user per month in year 1. From year 2, this drops to roughly €6 per user per month. Compare this with SaaS alternatives that cost €10–€50 per user per month.
If an existing SaaS tool covers 80% or more of your needs, buying is often smarter than building. Think of HubSpot for CRM, Monday.com for project management or Exact for accounting. Custom development is the better choice when your processes are unique, off-the-shelf software does not fit, or you want to build a competitive advantage.
This is a frequently underestimated cost. Migrating from a no-code platform such as Bubble to a custom web app typically costs €50,000 to €250,000, depending on complexity. Data migration, rebuilding all the logic and testing the new application cost more than starting from scratch, because you also have to reverse-engineer legacy logic.
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