To determine the deductible and nondeductible expenses and determine their impact on the economic and financial situation of the company MULTISERVICIOS TICLA SAC 2012 - 2013. The research method is the inductive is one that is one scientific method that obtains general conclusions from particular premises. This is the more usual scientific method , which can distinguish four essential steps : observation of facts for registration ; classification and study of these facts; inductive derivation of the facts and lets get to a generalization ; and calibration. Observed phenomena as they were in their natural context and then analyze them as was the case of deductible and non -deductible expenses and their impact on the economic and financial situation of the company MULTISERVICIOS TICLA SAC. The relationship needs to be established between expenditures and income generation or maintenance of...