Government revenue, expenditure, and national income: A granger causal analysis of the case of Taiwan

An understanding of the causalities among government receipts, outlays and national income in developing countries may shed some light on the type of government finance favorable to economic prosperity. However, there is no consensus in theories and empirical studies about the causal order among the three variables. This study evaluates their causal relationships in Taiwan within a framework of trivariate autoregression model. We find that there are feedbacks between GNP and government expenditure, on the one hand, and between government revenue and GNP, on the other hand. But there is only a one-way causality running from government revenue to government expenditure. The two bidirectional causalities seem to fit the expectation of fiscal activism. However, the causal flow from government revenue to expenditure indicates the constraint of the former on the latter. Therefore, we call this general causal pattern among the three variables in Taiwan as “constrained fiscal activism.”