How much does a custom web app cost for SMEs?

The question “how much does a web app cost?” almost always comes after a specific operational warning sign: teams chasing Excel files, customer requests handled by email, duplicate orders, and data scattered across tools that do not communicate. In these cases, the point is not to buy software. It is to understand what investment is needed to eliminate friction that slows down sales, operations, or customer care.

A web app can cost anywhere from a few thousand euros to more than €100,000. The gap between the two extremes does not depend on the name of the technology, but on the complexity of the process to digitize, the number of users, the integrations required, and the level of reliability needed. A sales configurator does not have the same requirements as a supplier portal, a customized CRM, or a management system coordinating warehousing, production, and administration.

How much does a web app cost: investment ranges

Price ranges help you get your bearings, provided you read them as rough estimates rather than fixed price lists. A custom web app is a design project: its cost is determined by the solution needed, not by a prepackaged bundle.

An MVP, meaning a first version focused on a critical function, can typically fall between €15,000 and €35,000. Examples include a private customer portal, a request intake system with approval workflows, or a dashboard that centralizes KPIs currently scattered across several spreadsheets. The goal is to validate a process, reduce manual work, and create a foundation that can be built on.

An operational web app for an SME, with user roles, dashboards, automations, notifications, and integrations with existing systems, often requires an investment of between €35,000 and €80,000. At this point, the platform becomes part of the company’s day-to-day work: it manages tasks, orders, documents, customers, or appointments. Design flaws are not cosmetic details, because they affect timelines, internal adoption, and data quality.

For complex, multi-user or multi-site platforms, with intricate logic, ERP integrations, third-party APIs, advanced reporting, granular permission levels, and stringent security requirements, the budget can start at €80,000 and exceed €150,000. This range fits projects that replace fragmented tools and become business infrastructure.

The lowest quote is not automatically the best value. If a platform manages a core process but does not include analysis, testing, security, support, and room to evolve, the initial savings can quickly turn into rework costs or permanent inefficiencies.

What really determines the cost of a web app

The first variable is the process. Digitizing a linear sequence of requests is different from translating business rules, exceptions, approvals, and responsibilities distributed across departments into software. Every step that currently requires phone calls, emails, or manual checks must be understood before it is automated. Otherwise, chaos is simply replicated in digital form.

The second is the functional scope. Records, roles, permissions, search, filters, document uploads, notifications, reports, and activity history may seem like standard features. In reality, each requires decisions about workflows, interfaces, data, security, and edge cases. A well-designed feature saves dozens of people minutes every day. An ambiguous one generates tickets, errors, and resistance.

Integrationsalso have a significant impact. Connecting a web app to a CRM, ERP, accounting software, e-commerce platform, payment gateway, e-signature services, logistics systems, or company databases requires technical checks and reliable data management. Not all APIs offer the same quality, documentation, or stability. An integration that seems simple can become complex if the source system is outdated or the data is not structured correctly.

User experience matters too. A web app used every day by sales, operations, or support staff must make priorities clear, reduce unnecessary clicks, and prevent errors. Design is not a finishing touch to add at the end: it is part of operational performance. If people do not understand how to use the tool or work around the process, the investment loses value.

Finally, there are often-underestimated requirements: authentication, authorization management, backups, monitoring, activity tracking, GDPR, performance under load, and test quality. Not every project needs all of these at the same level, but ignoring them from the outset exposes the company to technical and organizational risks.

From budget to financial return

The useful question is not only how much it costs to develop a web app. It is how much it costs to keep working without one. To assess this, it is worth measuring the time spent on manual tasks, the number of errors, delays in handoffs between departments, lost sales opportunities, and the cost of tools already in use.

Imagine a team of five people that spends an average of one hour a day copying data, updating files, and chasing information. That is about 100 hours a month. Add data-entry errors, longer response times, and a lack of visibility for decision-makers. A web app that centralizes the workflow does more than eliminate one time cost: it makes the process measurable and more predictable.

ROIdoes not depend solely on hours saved. A well-built platform can increase the speed of preparing quotes, reduce customer onboarding time, improve renewal rates, or enable management to address a bottleneck sooner. That is why the business case must tie each feature to a concrete operational or commercial outcome.

How to get a useful quote, not a generic figure

A reliable quote starts with an analysis phase. You do not need to arrive with perfect technical specifications, but it is helpful to clarify the problem, who experiences it, which tools are involved, and which outcome needs to improve. “We want a management system” is a weak starting point. “We want to reduce order processing from two days to four hours and see anomalies in real time” is an objective you can design around.

Before development, a competent partner should define priorities, roles, workflows, required data, technical dependencies, and success criteria. This phase can produce wireframes, an architecture, a functional backlog, and a roadmap. It is not bureaucracy: it prevents you from funding nonessential features and makes investment decisions transparent.

It is also worth asking what is included after launch. Hosting, corrective maintenance, security updates, monitoring, user support, and ongoing development are separate from the initial project. In many cases, setting aside an annual budget for maintenance and evolution, often in the range of 10–20% of the development cost, is a healthier choice than treating the web app as a static product.

When to start with an MVP—and when not to

An MVP is an effective choice when a company needs to test a new service, gradually involve users, or address a single high-priority bottleneck. It reduces time to launch and lets you use real data to decide on the next phase. But MVP does not mean an incomplete or fragile product: it means a limited scope, appropriate quality, and a measurable objective.

However, it is not always possible to proceed in small increments. If the web app must replace a core system, handle sensitive data, or coordinate interdependent processes, designing just one part without considering the overall architecture can create technical debt and future costs. The solution is to distinguish between the complete roadmap and the first release: plan the direction, fund the priority.

A web app makes sense when it turns a recurring task into a faster, more controllable, and scalable process. The right budget is not the lowest possible one, but the one that delivers measurable change without creating new complexities. Before asking for a price, identify the cost of inefficiency you want to eliminate: this will be the most useful figure for deciding how much to invest and how ambitious to be.