ROI & costs

How much a poorly informed decision costs

Why decisions made without reliable data have a real but invisible cost, how to estimate it, and why investing in data is, at heart, risk management.

DLData Layer Team Apr 8, 2025 4 min read
How much a poorly informed decision costs

Key takeaways

  • A poorly informed decision has a real cost, even if rarely accounted for.
  • The cost includes missed opportunities, errors and late reactions.
  • Investing in data is partly reducing the risk of deciding badly.
  • Data value is measured also in errors avoided.
  • It can be estimated with conservative figures.

It is easy to quantify what a data project costs; much harder to quantify what not having data costs. Yet the cost of poorly informed decisions usually far exceeds the investment needed to avoid them.

What it is

A poorly informed decision is one made without the right data, with wrong data, or too late. Its cost spreads across missed opportunities, misallocated resources and late reactions.

Where the cost accumulates

How to estimate it

Though hard to measure precisely, it can be estimated: what would detecting a sales drop earlier have meant? what does a recurring inventory error cost? Putting conservative figures to these questions reveals a cost almost always larger than expected.

No data
Decide blindor too late
Cost
Missed opportunitiesErrors, late reactions
With data
Decide on timeRisk reduced
Deciding without data carries a real, if invisible, cost that good data reduces.

Data as risk management

Seen this way, investing in data is not only a growth lever but a form of risk management: it reduces the probability and cost of deciding badly. A good data layer’s value is measured as much in errors avoided as in opportunities opened.

The value of data is measured as much in the errors it prevents as in the opportunities it opens.

In summary

Poorly informed decisions cost real money — missed opportunities, misallocated resources, late reactions — even if it never appears as a budget line. Estimating it with conservative figures usually reveals a cost larger than expected. Investing in data is, in part, risk management: it reduces the chance and cost of deciding badly.

Sources & further reading

Frequently asked questions

Can the cost of a bad decision be quantified?

Approximately: by estimating missed opportunities, recurring errors and margin lost to decisions without data. It is usually larger than expected.

Why is it considered risk management?

Because investing in data reduces the probability and cost of deciding badly, like any measure that mitigates a risk.

Is data value only growth?

No. It is also in errors avoided and timely reactions, which are rarely accounted for but have real impact.

How do I put a figure on it?

Ask concrete questions — what would detecting a sales drop earlier be worth? what does a recurring inventory error cost? — and use conservative estimates.

Where does the cost accumulate?

In missed opportunities, misallocated resources, late reactions and margin lost to pricing decisions made without data.

How does data reduce this cost?

By providing the right information in time, it lowers both the probability and the impact of deciding badly.

Turn this data into results

Tell us what you want to achieve. Data Layer connects, processes and delivers the result up and running, with no infrastructure for you to manage.