You cannot manage what you can't measure. For effective management of investment in IT, managers need analytic tools. TCO is such a vital tool in IT investment evaluation. Some of the tools that analysts can employ are ROI (return on investment), Balanced Scorecard, IRR (internal rate of return) Total Net Present Value and so on. TCO need to be carried out periodically in order to gain from it. With TCO analysis, controllable expenditures can be managed effectively.