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ERP or a custom information system?

Buy an off-the-shelf ERP, or have a custom system built? It's not a question of “better vs. worse”, but of what fits your company. Let's break down the deciding factors.

Information systems · 11 Jul 2026 · 7 min

Two different approaches

An off-the-shelf ERP (for example Odoo, SAP, Pohoda, etc.) is a ready-made product that covers common processes — invoicing, warehouse, accounting. A custom system is written exactly according to how your company works. The first forces the company to adapt to the software, the second adapts to the company.

When an off-the-shelf ERP is enough

  • Your processes are standard and don't differ from the competition.
  • You need fast deployment and a low entry price.
  • You're fine with paying licenses and adapting to the system's logic.

For many companies the ideal compromise is Odoo — an open system that can be significantly customized. We cover the comparison in the article Odoo or a custom system.

When a custom system is worth it

  • You have a process that is your competitive advantage and no boxed software covers it.
  • You'd have to work around boxed software with Excel because „it can't do that“.
  • You pay licenses for dozens of users and the sum keeps growing forever.
  • You need specific integrations and full control over your data.

Costs over time

An off-the-shelf ERP has a low start, but the monthly licenses run continuously. A custom system has a higher initial investment, but you own it. With a larger team the curves cross and custom starts being cheaper. We break down the numbers in the article How much does a custom information system cost.

It doesn't have to be either–or

A common solution is a combination: an off-the-shelf system for the standard (accounting) and a custom module for what makes you different — connected via API. You get the speed of an off-the-shelf solution and the precision of custom.

We'll advise what fits you

We'll go through your processes and tell you straight whether an off-the-shelf ERP is enough or whether a custom system is worth it — a no-obligation consultation.

FAQ

FAQ

Is a custom system always better than an ERP?

No. If your processes are standard, an off-the-shelf ERP is faster and cheaper. Custom is worth it where you have a specific process that a boxed product doesn't cover.

Can ERP and custom be combined?

Yes, and it's common. An off-the-shelf system covers the standard (accounting), a custom module covers what makes you different, and they're connected via API.

Which is cheaper in the long run?

It depends on the number of users. An ERP has a low start, but you keep paying licenses. With a larger team a custom system that you own often pays off.

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