The twin deficits (budget deficit and current account deficit) have been argued in the economic literature since 1980s. This is a period in which the studies about budget deficit and the current account deficit were significantly increased in the United States. In the economic literature, there are two hypothesis: Keynesian hypothesis and Ricardian equivalence. The Keynesian proposition confirms the existence of a positive relationship between the two deficits, whereas the Ricardian equivalence argues that the budget and current account deficits are not correlated.
This study analyses the twin deficit for 70 countries during 1985-2006 using the panel data. The reviewed countries, based on their incomes are classified into three groups: high incomes, middle incomes and low income countries. Effect of the budget deficit on the private consumption, current account deficit and eventually the effect of budget deficit on the economic growth have been studied. The results show that there is not a significant relationship between the two deficits and private consumption and economic growth in high income countries. But the results from the middle and low income countries confirm the significant relationship.
JEL classification: F12