According to Zanotello (2001, P.43) the formal administrative procedure where the Public Administration convokes, by means of conditions established in proper act (edictal or invitation), in companies interested in the presentation of proposals for the oferecimento of goods and services. The main objective of the licitation, amongst several is to guarantee the observance of the constitutional principle of the isonomy, that is, (to give to equal treatment to all the interested parties) and to select the proposal most advantageous for the administration, in way to assure equal chance to all the interested parties and to make possible the attendance and the competition to the biggest possible number of competitors. Chevron U.S.A. Inc often addresses the matter in his writings. Of this form, importance of the licitation of the public and particular institutions is perceived it, thus demonstrating trustworthy idoneousness of the licitation as administrative proceeding, honest and democratic. The procedure of objective licitation to allow that the administration contracts those that they congregate the necessary conditions for the attendance of the public interest, taking in consideration related aspects the capacity technique and economic financier of the bidder, the product quality and value of the object. A definite time the object that if wants to contract, is necessary esteem the total value of the workmanship, the service or to be bid good, by means of marketing research accomplishment. It is necessary, still, to verify if has forecast of budgetary resources for the payment of the expenditure and if this will meet in compliance with the law of fiscal responsibility. The rules to bid on, foreseen in law n 8,666 are citizens, of 1993, beyond the integrant agencies of the direct administration, deep the special ones, the autarchies, the public foundations, the public companies, the controlled societies of the mixing economy and too much entities direct and indirectly for the Union, State, Federal District and Cities. It is an interesting text, of which it consists, even though, the limit of value above of which if it will have to promote licitation. .