A person’s purchasing power is calculated on the basis of the disposable household income. This is defined as the collective gross income of all household members minus paid income transfers, premiums and taxes. This amount is subsequently corrected for household composition and size. The standardised disposable household income or purchasing power is attributed to each household member individually.
Figures referring to the so-called institutional population (persons living in homes and institutions), student households and persons living in households with irregular incomes have been left out of account.