The main purpose of this thesis is to examine the simultaneous determination of debt, dividend, and inside ownership policies in Sweden. We apply a simultaneous equation model estimated with 3SLS. The results reveal a positive two-way causal relationship between debt and dividend polices. We also find a two-way causal relationship between inside ownership and dividend policies, but dividends affect inside ownership in a positive way while inside ownership affects dividends in a negative way. Further, we find a relationship between inside ownership and debt policies, but any causality appears to run from inside ownership to debt in a negative way. This study supports the notion that the convergence of interest and the entrenchment theory are not mutually exclusive. We also show that a SEM estimated with 3SLS is justified empirically over the OLS and that the difference between using 3SLS compared to 2SLS is negligible in our model.