pThe Braziliam Judiciary has been determining that the popular system of constant payments, known as Tabela Price, based on compound interest, be substituted by an amortizacion scheme, named as “Method of Gauss”, with constant payments based on simple interest. Moreover, the substitution being done while maintaining the numerical value of the contractual interest rate. Taking into account that a possible defensive strategy  which may be used by the financial institutions, is not always feasible, it is also shown that the use of the so called “Method of Gauss” will introduce unsurmountable difficulties concerning the determination of outstanding debts. Since the methodology that has been proposed for the determination of outstanding debts, does not agree with procedures that are well known in the pertinent literature./p