Permanent magnets are widely used in turbines, generators, hybrid vehicles, mobile phones, and other electronic equipment that are essential to our daily lives. Thermo-Calc Software has developed a thermodynamic and properties database for rare-earth permanent magnetic materials (TCPMAG1) using the CALPHAD method. There are six elements (B-Ce-Fe-La-Nd-Pr) included in this database. 15 binary and 11 ternary systems are critically evaluated. This enables predictions to be made for multicomponent systems and alloys of industrial importance. The database can be used for a wide range of compositions from pure Nd2Fe14B to very complex rare-earth-based commercial permanent magnetic materials. It can be used for calculating phase diagrams and thermodynamic properties, predicting phase equilibria, curie temperatures and simulating solidification processes. In addition to thermodynamic data, the database includes thermophysical property data for molar volume of all phases, viscosity and surface tension of liquid.