I have access to a database with several variables containing data on compensation of employees. I am very interested in creating a variable similar to household income, where the income of the self-employed and wages payed to employees are both taken into consideration.
The data-set contains information on mixed-income, which I could include to this previous variable. However, from my understanding, mixed income includes some form of capital profits as well as this income of the self-employed.
Is there a way to separate pure income from capital profits from this mixed income variable? If not, is there any way at all to estimate household income? This data-set also includes information on value added, consumption of fixed capital and taxes - subsidies. Would subtracting consumption of fixed capital from mixed income work?
Thank you for your help!