Reduction to the pole (RTP) is a popular filter thatsimulates how the magnetic data would be if both thegeomagnetic field and the magnetization of the sourcewere vertical. This process locates the horizontal positionof the source through the maximum amplitude of thereduced-to-the-pole anomaly; therefore, it assists in thegeologic interpretation. To perform properly the RTP isnecessary the knowledge of the magnetization directionsof the source and the ambient field. However, themagnetization direction of the source is rarely known.Other issue in RTP is its instability at low latitudes; at theselocations, the traditional RTP results are useless. Weanalyze the RTP results of simulated magnetic data atdifferent latitudes, generated by sources with induced andremanent magnetizations. These synthetic tests closelyresemble real data from Brazil. Then, we apply the RTP tototal-field anomalies in distinct locations from south to northpart of Brazil. These locations encompass data from mid tolow latitudes: Dom Feliciano Belt, Goiás Alkaline Provinceand Carajás Mineral Province. The reduced-to-the-poleanomalies of these datasets exemplify good and badfiltering of real data in Brazil.