Induced polarisation (IP) surveys measure over-voltage phenomena of the considered medium. They are widely and increasingly performed not only for exploration of mineral resources but also for engineering applications. In earth science applications, electrical chargeability of the subsurface is obtained from a process called inversion, which consists of estimating the subsurface’s properties mostly from surface data. The inversion of IP data is an ill-conditioned problem, because large variations in physically defined parameters may result in small variations in the observed data and conversely, which makes solving inverse problems challenging. A reliable and efficient inversion scheme is required for interpreting field-scale IP measurements. The aim of the project is the development and validation of a parallel IP inversion code, with the goal to apply it to the inversion of the geology beneath Western Australia. The code will be based on the existing electrical capacitance tomography inversion package TomofastX, which is currently used for the determination of the dielectric permittivity of multiphase flows. The final goal of this project is to be able to calculate the electrical resistivity and chargeability of subsurface materials. This will also allow establishing the link with other physics, like for example magnetic susceptibility, via advanced joint inversion techniques, to build more realistic 3D geological models.