This research aims to determine the effect, to find out the shock and to find out how much the contribution given by variables to the mismatch that occurs in Islamic Commercial Banks and Sharia Business Units. The variables used in this studies are total Third Party Funds Saving, total Third Party Funds Investment, total Uncertain Financing, total Certain Financing and Non Performing Financing (NPF). This research method using Error Correction Model (ECM) and Vector Autoregression and Vector Error Correction Model (VAR-VECM) with data starting from June 2014 - September 2018. The results of this research indicate that the main cause of Mismatch in Sharia Commercial Banks is the distribution of funds while the main cause of Mismatch in Sharia Business Units is withdrawal of Third Party Funds