The study of Cu-doped BiMnO 3 is found to allow the observation of the structural and magnetic properties. The increase in Cu content causes a decrease in crystallite size as determined by the powder X-ray diffraction technique. To reinforce experimental results, first-principles calculations of the electronic structure were carried out using density functional theory (DFT), with the Vienna Ab Initio Simulation Package (VASP). We observed that Cu-dopant and Mn atoms couple antiferromagnetically, causing a reduced magnetic moment, in agreement with the experimental measurements of magnetic hysteresis loops. Understanding the effect of the doping agent on the electronic and magnetic properties of the material is important for non-volatile memory applications.