Capital Flight has long been recognized as a problem for developing nations. Savings gap in some of these nations has widened over the years due to rising Capital Flight. This has limped domestic investment growth, employment creation and poverty alleviation. With these in view, this study seeks to underscore the socio-economic determinants of Capital Flight in Nigeria. Approaching the study, two measures of Capital Flight (hot money method and residual method) are modeled against a number of socio-economic factors identified in the literature. Fully Modified Ordinary Least Square, Seemingly Unrelated Regression and Error Correction Mechanism are employed to sieve out the significant determinants of Capital Flight in Nigeria. Amongst the host, only lagged Capital Flight, fiscal balance and exchange rate are found to be the significant determinants of Capital Flight in the country. The study concludes that unless sound macroeconomic measures are taken to address these factors, Capital Flight will remain high in Nigeria. Domestic investment will remain very low. Poverty levels will remain high, and the quest for economic development will remain elusive. The key out of Nigeria’s colossal savings gap is keeping domestic capital at home. This is achievable using the strategies discussed in the study.