Magneto-active elastomers (MAE) are an emerging class of smart materials. Applications in mechanical, civil, and biomedical engineering include grippers, dampers, and tunable vibration absorbers. MAE consist of a soft elastomeric matrix filled with magnetizable particles. In a magnetic field, this composite undergoes large deformations at the meso-scale and stiffens or bends and the macro-scale. Existing meso-scale (finite element) simulations assume perfect bonding between matrix and inclusion. However, this assumption does not necessarily hold, depending on the particle surface treatment during composite manufacture and damage effects during loading. Mechanical interface elements to model these characteristics and behaviors are well established, which we bring into the context of MAE modeling. Further, we introduce a magneto-mechanical interface finite element that also transmits the magnetic field through the emergent void between matrix and inclusion. Numerical examples follow.