Introduction A company may issue several types of securities in varying combinations, but what it tries to do is find the combination that will maximise its overall market value a Capital structure is the proportionate relationship between a company's debt and equity Capital structure is the debt vs equity question. Should the company have some debt in its capital structure?Introduction ◼ A company may issue several types of securities in varying combinations, but what it tries to do is find the combination that will maximise its overall market value. ◼ Capital structure is the proportionate relationship between a company’s debt and equity. ◼ Capital structure is the debt vs equity question. Should the company have some debt in its capital structure?