There is only one fundamental law of economics: for every income there is corresponding outlay or expenditure

The production of each activity generates a feedback process from the incomes of the production factors to the expenditures of the institutional sector and to each activity’s own productive process. [...] The receipts of the government include income from its enterprises (A62), direct taxes of the households and private corporations (A63, A64), the total indirect taxes of the economy (A67) and the net capital transfer from rest of the world (A69). [...] The choice of either of the two options depends on the size of the IO table to be compiled from the SUTs. [...] The private corporate sector receives capital income in the form of operating profits while the public non-departmental enterprises receives the same in the form of operating surplus and the government receives capital income in the form of entrepreneurship income. [...] For instance, to capture the impact on production activities due to increased spending by the household, one needs to consider the column of the household sector corresponding to the rows of the activity sectors of M matrix (i.e.