One of the most critical areas of professional judgement in a valuation engagement is the extent to which the information is assessed. While judgement is also required in the selection and application of the valuation methodology, in my experience, the major factors for the variance in disputed valuations are different assumptions with respect to the earnings or cash flows adopted and their related growth rates and risk. A properly prepared valuation is one where these assumptions have been based on a sound, appropriate analysis of the available information. But how much analysis is enough?