The present invention solves the problems described above by presenting an improved mounting plate for vehicle bike racks allowing the user to directly mount a vehicle license plate to the mounting plate such that the license plate is visible and not obstructed by the bikes positioned on the vehicle bike rack. The mounting plate for vehicle bike racks includes a rigid body having a flat mounting surface, a plurality of holes positioned on the flat mounting surface, a pair of rotatable arms and a pair of connection members configured to attach to a vehicle bike rack.