Article

How to build a business case for systems improvement

A credible systems business case starts with an operating problem the organisation can observe—not with a preferred product looking for a justification.

Mellorca Insights·Systems & Strategy·7 September 2026

Technology proposals are easy to overstate because benefits such as “efficiency” and “better visibility” sound valuable without defining what changes in the operation. A stronger business case connects the proposed improvement to a baseline that can be tested.

Start with the current operating cost

Describe the problem in measurable terms: repeated handling, delay, rework, error exposure, manual reconciliation, missed capacity, support effort or dependency on fragile workarounds. Not every cost needs to be converted into money, but every claimed benefit should have a clear mechanism.

Separate benefit types

  • Hard cost: spend that can realistically be removed or avoided.
  • Capacity: time that can be redirected, not automatically treated as cash savings.
  • Risk: lower probability or consequence of operational failure.
  • Service: faster, more reliable or more transparent customer outcomes.
  • Enablement: capabilities required for later growth, automation or control.

Include the lifecycle, not just implementation

Account for configuration, integration, migration, testing, training, monitoring, maintenance, vendor dependency and change. A cheap implementation can become an expensive operating model if those costs are ignored.

Use scenarios rather than invented certainty

Model conservative, expected and upside cases. State assumptions explicitly and identify which measures will be checked after implementation. That turns the business case into a decision tool rather than a sales document.

What better looks like

The organisation can explain the problem, why the proposed change addresses it, what it will cost to own, how value will be measured and what would invalidate the decision.

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