This article seeks to demonstrate the relationship between the financing products offered by a financial institution and the issues raised by some authors, regarding the financing decisions and external and internal sources that a company can use. First of all, a conceptual approach regarding the Colombian financial system, financial decisions and funding sources is made. Secondly, a parallel is established with the financing offers that the Banco Santander Colombia S.A. provides. Finally, it is highlighted the importance that has these alternatives have for companies, in the procurement of resources, in order to achieve their financial objectives.