How much does custom software cost? Cost drivers, hourly rates and a requirements checklist for SMEs

If you typed “how much does custom software cost” into Google, you probably want a number. The honest answer: it depends — on more factors than most quotes reveal at first glance. An internal time-tracking tool for three people is a completely different project from a platform that pulls order data from an ERP system, manages roles for 50 employees, and needs to run around the clock.

Instead of showing you a price list that would not match your situation anyway, this article walks through what actually drives the cost, how fixed price compares to time & material, when custom software is the right call in the first place — and gives you a checklist so you can get a solid quote without being a developer yourself.

Why there is no price list (and what that means for you)

Custom software is, by definition, not off-the-shelf. Two companies with the same starting point — “we want to digitize our order processing” — often end up with very different amounts of work once you look at the details: How many user groups with different permissions are involved? Do existing systems need to be connected? Are there data protection requirements that shape the architecture from day one?

That is why Coflnet deliberately does not publish flat project prices or price ranges. A number without context does not help you — it sets either an unrealistically low expectation that gets renegotiated later, or an inflated one no serious provider can hold. What helps is understanding what the price depends on, so you walk into the first conversation with a clear picture.

The six cost drivers

Almost every software project can be estimated using these six factors:

1. Scope. The more workflow steps, edge cases and exception rules the software needs to cover, the more development and testing effort it takes. A simple form is quick to build; a workflow with ten status changes and approval steps is not.
2. Integrations. Every connection to an existing system — ERP, CRM, accounting, time tracking, or even machine and sensor data — brings its own effort: reading documentation, setting up test environments, handling edge cases. Integrations are consistently one of the most underestimated cost drivers.
3. User roles. An application with a single user role is simpler than one with admin, staff and customer accounts that each need different permissions and views.
4. Data migration. If existing data from spreadsheets, legacy software, or multiple sources needs to be carried over, that adds effort for cleanup, reconciliation and validation — often underestimated, because “the data already exists” does not mean it is clean and consistent.
5. Hosting and operations. Where will the software actually run, how does it scale, who handles updates and uptime? This is not a one-time line item but an ongoing cost — more on that below.
6. Compliance and data protection. GDPR-compliant processing of personal data, permission models, audit logging, or industry-specific requirements increase effort — but pay off when they are designed in from the start rather than retrofitted later.

Each of these factors pushes the price in a different direction. A project with a tight scope, one user role and no integrations is naturally cheaper than one with several interfaces, complex roles and heavy compliance requirements.

Fixed price or time & material?

At Coflnet we work with both models, depending on the project:

• Fixed price works well when requirements are already reasonably well defined — for example a clearly scoped module or a migration with a known data set. You know the cost upfront, and more of the risk around unclear requirements sits with the provider.
• Time & material works well when requirements are still likely to shift or get clarified during the project — for example a new product where you only learn what is really needed from user feedback. You pay for actual effort, but keep full control over prioritization and scope.

For orientation: hourly rates for software development in the German market are commonly quoted somewhere between roughly 80 and 180 €, depending on experience, specialization and the provider’s location. These are commonly cited ranges, not a commitment for any specific project — the actual rate depends on the provider and the expertise required.

Custom software vs. off-the-shelf vs. spreadsheets

Not every problem needs a custom solution. An honest assessment upfront saves money:

• Spreadsheets or simple no-code tools are enough as long as few people work with manageable amounts of data and there are no real requirements around traceability, automation or scale.
• Off-the-shelf software (an established inventory or CRM system, for example) is usually the more economical choice when your process matches industry-standard workflows and you do not need deep customization.
• Custom software pays off once standard solutions hit their limits: when your process does not fit neatly into someone else’s software, when spreadsheets are maintained by hand and start producing errors, or when a standard solution’s per-user licensing costs spiral as your team grows.

Operating it also costs money: hosting, updates, support

A price that only covers development is only half the story. Software has to be operated — hosted, monitored, updated, fixed when something breaks. This is where many quotes leave out an important detail: at Coflnet we build and operate software ourselves, on our own Kubernetes infrastructure with EU hosting and under GDPR requirements. We also run our own high-volume platforms in continuous production, so we know firsthand what it takes to keep a system reliably running, not just what it takes to ship it once.

That means budgeting for operating costs from the start instead of discovering them as a late surprise. A quote should clearly separate who builds the software from who operates it afterward.

Our integration range also goes beyond typical web software, from REST APIs to machines and devices we connect over MQTT or WebSocket using the appropriate SDKs. Access to CAN bus or Modbus comes from a library on the device, which we call and replace with a mock in tests; we don’t build the bus binding, drivers or firmware ourselves. This matters if your software needs to talk to machines or sensors — our guide on CAN bus and machine data shows what that looks like in practice. Specialised building blocks can be planned in as components too, such as dialect speech recognition or a pipeline for millions of records per day.

Requirements checklist

You do not need to write a formal requirements document to get a solid quote. These points are enough to get started — jot down short answers before your first call:

1. Goal: What specific problem should the software solve?
2. User groups: Who will use it — internal staff, external partners, customers?
3. Current tools: What do you use today (spreadsheets, paper, other software)?
4. Data sources/integrations: Which systems need to be connected?
5. Must-haves: What is non-negotiable?
6. Nice-to-haves: What would be good but is not essential?
7. Data protection: Will personal or sensitive data be processed?
8. Timeline: Is there a fixed deadline (trade show, contract renewal, season)?
9. Budget range: Even a rough figure helps narrow down the right approach.
10. Decision maker: Who makes the final call within your company?
11. Success criterion: How will you know a year from now that the project paid off?

How to get a solid quote

The most reliable way to get a realistic estimate is a conversation with someone who has actual development experience asking the right questions — not a form that makes assumptions for you. At Coflnet, a consultation costs 150 € plus VAT (our regular hourly rate, for business owners and founders; the amount is credited against a follow-up project). Afterward you receive a written summary with a recommended approach and a rough sense of scale, not a generic auto-filled quote.

FAQ

How much does custom software cost? It depends on scope, integrations, user roles, data migration, hosting/operations and compliance requirements. Rather than a flat number, a conversation that walks through these factors for your specific project is far more useful.

How long does custom software development take? Timeline depends directly on scope and the number of integrations — a tightly scoped module ships faster than a platform with multiple interfaces and roles. An initial conversation can usually give you a rough sense of timeline.

Can I get custom software built without technical knowledge? Yes. The requirements checklist above covers exactly the questions you can answer without technical background. The development partner handles the technical translation — architecture, integrations, implementation.

Is custom software more secure than off-the-shelf software? Not automatically — security depends on how something is built, not on whether it is custom or standard. Custom software does, however, let you tailor permission models, data protection and audit logging exactly to your requirements instead of adapting to what a standard solution allows.

If you want a concrete assessment for your project instead of continuing to guess: book a consultation — you get an honest read, not a sales pitch.