This study provides a detailed insight into the approach applied for smoothing earnings in Taiwan’s Financial Holding Companies (FHCs) within the framework of panel quarterly data from 2003 to 2015. All the variables are stable with the unit root tests before regression. It is found that FHCs would increase/decrease the loan loss provision and the loan loss reserve for managing stable increasing earnings. The empirical results also show that the larger gap between the loan and the deposit interest rate would lead to the higher loan loss provision. The loan loss provision against a FHCs' total loans simultaneously appears at the balance sheet and the profit and loss statement, in other words, FHCs need to boost their reserves, which could diminish earnings and increase assets through their debts.