The concept of the mass affluent is relatively easy to understand, even if the precise definition changes depending where you are in the world. For instance, the threshold for mass affluent status in the US is usually pitched at $100,000 in liquid assets, whereas in parts of Asia the limit is lower to reflect prevailing average incomes and other economic factors. However, research shows that the growth of developing economic powerhouses is already starting to impact on personal fortunes among households with more than $100,000 in investable assets. Of course, the mass affluent are not a homogeneous group. In some parts of the world they are relatively mature, whereas in the emerging economic powerhouses they are usually younger and still in wealth building mode. Their attitudes to advice are similarly diverse.