Restyling of fees in consumers credit and their optimization

The structure of fees in a consumers credit contract is considered. It is analysed under the profile of its financial convenience (measured by the NPV) and the legal profile, requiring to declare the IRR after fees. We characterise the fees structures allowing for both an increase in the NPV and a decrease in the IRR. We provide also the description of optimal fees structures by solving a LP problem. Finally the problem of financing initial expenses is considered.