The study has examined the effects of capital structure on financial performance of insurance companies in Nepal. Data were collected from the annual report of the respective insurance companies' web site. The panel data of 14 Nepalese insurance companies from 2007/08 to 2015/16, leading to a total of 126 observations. The data were analyzed using pooled OLS model, random effect model and fixed effect model. The study has been return on assets as dependent variable whereas total debt ratio, equity to total assets, leverage, firm size, liquidity ratio and assets tangibility are independent variables. The result concluded that equity to total assets, leverage, and assets tangibility have effects the financial performance in Nepalese insurance companies' cases.