We are often asked the above question by organisations. Much like the answer to any business endeavour, the short and easy answer is when the value exceeds the cost.
However, the value is not always very easy to measure. Contrary to, for example, the value derived from starting a new manufacturing line or upgrading a key piece of equipment which is visible in the short term, the value derived from appointing a top non-executive director, strengthening the finance function to enable meaningful data analysis or establishing an internal audit or risk management function, is over a longer term. In addition, value derived from establishing an internal audit or risk management function is much more difficult to quantify.