This study specifies a modified version of the monetary approach to the balance of payments (MABP) model with free capital flow and fixed exchange rates for Saudi Arabia, and tests the independence of monetary policy of its central bank using annual data from 1960 to 1994. Further, capital flight and speculative inventory behaviour of importers of consumer and capital goods in Saudi Arabia are also tested to the expected exchange rate depreciation during the periods of exchange turmoil against the riyal. The results of this study indicate that Saudi Arabian Monetary Authority has at best a weak control on its money supply which is in accord with one of the predictions of MABP theory. Further, the study found little support to the speculative inventory behaviour of the importers of consumer and capital goods in Saudi Arabia against exchange rate depreciation of the riyal. However, the results suggest that the expected change in exchange rate depreciation has a positive and a significant impact on capital flight in Saudi Arabia.