Return on investment (ROI)

Return on investment (ROI) compares the net financial benefit of an investment with the amount invested. It can evaluate a completed initiative, monitor an active one or support comparison before capital is committed. Its simplicity is useful, but definitions and time horizons must be made explicit.

When to use it

• Answer the key performance question: “How well are we generating sustainable profits?”
• Include the KPI in the financial perspective.
• Compare investments with consistent benefit, cost, risk and timing assumptions.
• Use it as one input alongside net present value, payback, strategic fit and non-financial consequences.

Origins

ROI grew from early twentieth-century managerial accounting and return-on-capital systems. The DuPont organisation is closely associated with formalising return measures that linked profit margin and asset use for decentralised management. The generic ROI label later spread across capital budgeting, marketing, technology and human-resource evaluation, which is why no single formula now governs every use.

What it is

Perspective: Financial perspective.

Key performance question: How well are we generating sustainable profits?

ROI is the gain or loss attributable to an investment relative to its defined cost. It can compare a direct campaign, a project, a capital asset or a broader programme, but the meaning changes with the boundaries.

Short-horizon “micro” ROI may cover a direct-mail campaign, print advertising or a sales promotion. Longer-horizon “macro” ROI may cover an assembly line, delivery system or production facility. The distinction is practical rather than accounting doctrine: both require incremental cash flows, a counterfactual and an appropriate horizon.

ROI can also be applied to training, knowledge or other partly intangible investments, but converting every outcome into money can conceal uncertainty and non-financial value. Report material assumptions and retain the underlying outcome measures.

How to use it

Measurement

Define the investment, decision date, baseline, incremental costs and benefits, timing, tax treatment and residual value. Exclude revenue or savings that would have occurred without the investment. Use scenarios for uncertain forecasts.

Data collection method