Why Improvement Proposals Need Quantified Benefits
Improvement proposals that rely only on qualitative arguments, such as efficiency, quality, or morale, often struggle to gain support. While these factors are important, they can be difficult to compare across different initiatives. Quantified benefits provide a clearer basis for prioritisation by translating expected improvements into comparable measures, such as cost reduction, avoided spend, or increased capacity.
Quantification does not mean claiming precise accuracy. Instead, it shows disciplined thinking about cause and effect. Even rough estimates can demonstrate that the proposal has considered scale, timing, and trade-offs. Research on project valuation shows that structured financial reasoning improves decision-making by making assumptions clear and open to challenge (Shou, 2022; Wetekamp, 2011).
What Net Present Value Shows, In Plain English
Net Present Value asks a simple question: when future costs and benefits are converted into today’s terms, does the improvement create value overall? It recognises that a benefit delivered in three years is worth less than the same benefit delivered now, because money can be invested, spent, or lost over time.
In practice, NPV brings timing into improvement decisions. Two proposals may deliver similar headline savings, but one delivers benefits sooner or requires less upfront investment. NPV helps reveal this difference. A positive NPV indicates that expected benefits outweigh costs when time is considered, while a negative NPV suggests that value is destroyed rather than created (Wetekamp, 2011).
Importantly, NPV is sensitive to assumptions. Estimates of future savings, project duration, and uncertainty all influence outcomes. Research on NPV under uncertainty emphasises that the value of the method lies not in prediction accuracy, but in structuring discussion about risk, confidence, and alternative scenarios (Gaspars-Wieloch, 2019).
What Activity-Based Costing Helps Reveal
Traditional costing often spreads overheads evenly, masking how work actually consumes resources. Activity-Based Costing takes a different approach by tracing costs to the activities that generate them. This allows organisations to see which processes, tasks, or demands drive cost, rather than assuming cost follows volume alone.
In improvement contexts, ABC is particularly useful for diagnosing problems. It can reveal that a process appears inexpensive overall but contains specific activities that are disproportionately costly, such as rework, manual checks, or exception handling. Research shows that ABC supports more informed improvement choices by linking operational behaviour to financial impact (Major, 2007).
ABC also helps challenge assumptions about efficiency. What looks like a small process change may remove a high-cost activity, while a larger redesign may deliver less benefit than expected. Evidence suggests organisations using ABC more systematically achieve better alignment between improvement effort and performance outcomes (Kennedy and Affleck-Graves, 2001; Desti, 2015).
When Rough Estimates Are Appropriate Versus Detailed Models
Not every improvement requires a detailed financial model. Early-stage ideas often benefit more from rough estimates that test plausibility than from precise calculations that create false confidence. Indicative ranges, conservative assumptions, and scenario comparisons are often sufficient to inform initial decisions.
More detailed modelling becomes appropriate when investment is significant, risk is high, or decisions are difficult to reverse. At this stage, NPV and ABC can be combined to show both where value is generated and how it unfolds over time. The key principle is proportionality. The sophistication of the analysis should match the scale and risk of the decision (Shou, 2022).
Common Mistakes When Using Financial Figures to Justify Change
One common mistake is overstating benefits while underestimating effort or disruption. Optimistic assumptions can undermine credibility and damage trust if benefits fail to materialise. Another issue is treating financial outputs as facts rather than estimates, discouraging constructive challenge.
A further risk is using numbers to close debate rather than inform it. Financial tools should support judgement, not replace it. Research consistently shows that the value of NPV and ABC lies in improving transparency, learning, and dialogue, not in producing a single definitive answer (Gaspars-Wieloch, 2019; Major, 2007).
Action Point
When preparing an improvement proposal, aim to express benefits in clear, transparent terms. Use simple NPV thinking to show whether value is created over time, and ABC logic to explain where costs or savings actually arise. Keep assumptions visible, conservative, and open to challenge. This approach strengthens credibility, supports better decisions, and helps ensure improvement effort is focused where it matters most.