This thesis examines the role of financial policy in resolving investment conflicts between investors and managers. The method of analysis is an analytical one. The thesis first surveys two areas of research: agency-theoretical studies of corporate capital investment and capital structure theories. The main body of the thesis consists of three essays in which various capital budgeting situations are modelled and different aspects of corporate financial policy are analysed. Essay one models an investment problem of a multiple division firm and shows that capital rationing can be used to force managers to compete for investment capital and therefore reduce their incentive to shirk. The main result is that, if a firm’s investment oppor...