This book is an attempt to test the magnitude of integration for capital mobility among EU economies for the time period 1991-2009. It has been observed that there is strong evidence in favor of higher degree of capital mobility for many EU countries, especially at euro currency period and in euro zone.There has been worth policy changes in capital market in the euro area in recent years and pointed towards the increased degree of capital market integration. Especially in the euro zone, these changes have been driven by the introduction of the single currency euro, technological advances and increased cross boarder transactions. Apart from all other previous studies of the F-H test, the present study has used time series econometric technique to test the capital mobility for 27 EU member countries. In time series analysis ,we found that correlation coefficients varies significantly across the EU member countries , ranges from 0.21 to 0.95, suggesting higher to low degree of capital mobility. So we can conclude that, F-H test, in other words, correlations coefficient between saving and investment are appropriate with the situation where degree of capital mobility is high.