Official Financial Flows, Capital Mobility, and Global Imbalances
The authors use a cross-country panel framework to analyze the effect of net official flows (chiefly foreign exchange intervention) on current accounts. They find that net official flows have a large but plausible effect on current account balances. The estimated effects are larger with instrumental variables (42 cents to the dollar on average compared with 24 without instruments), reflecting a possible downward bias in regressions without instruments owing to an endogenous response of net official flows to private financial flows. Impacts of net official flows are larger when international capital flows are restricted and impacts are smaller when capital is highly mobile. A further result is that there is an important positive effect of lagged net official flows on current accounts that operates through the portfolio balance channel.
Data disclosure: The tables and figures in this working paper are available here [xlsx]. The data set is not available because of confidentiality and proprietary reasons, but the working paper includes an appendix describing the data sources in detail.