Cost of Capital Notes is the part of financial management. In cost of capital notes, meaning of cost of capital, its measurement, cost of debt, equity and cost of marginal capital will include. Following are its main notes. By studying these cost of capital notes, you will become perfect for getting cheap debt and capital because you know what is its cost and how to reduce this. To study these notes are very necessary for any student who is studying business because without studying cost of capital, you can not think about net return on investment.