Research Methodology: Appendices
General assumptions
Statistical distinctions
Determination of wealth bands for global wealth classes
Lower wealth threshold: There is a close link between financial assets and the incomes of private households. According to Davies et al. (2009)⁷, private individuals with below-average income tend to have no assets at all, or only very few. It is only when individuals move into middle and higher income groups that they start to accumulate any assets to speak of. We have applied this link to our analysis. Countries in the upper-middle income bracket (based on the World Bank‘s country classification system) therefore form the group in which the average assets of private households have reached a relevant volume for the first time. This value marks the lower threshold for the global middle wealth class. How high should this value be?
In terms of income, households with incomes that correspond to between 75% and 150% of average net income are generally considered to constitute the middle class. According to Davies et al., households with income corresponding to 75% of the average income have assets that correspond to 30% of the average assets. As far as the upper threshold is concerned, 150% of average income corresponds to 180% of average assets. Consequently, we have set the threshold values for the wealth middle class at 30% and 180% of average per capital assets. If we use net financial assets to calculate the two thresholds, we arrive at an asset range of between EUR11,00 and EUR65,900 for the global middle
wealth class in 2024.
Individuals with higher per capita financial assets then belong to the global high wealth class, whereas those with lower per capita financial assets belong to the low wealth class.