The present invention has for its object to provide a resin composition for toner exhibiting excellent low temperature fixation performance, high temperature offset-resistance and anti-blocking performance and enabling a satisfactory color development, as well as a toner thereof. A resin composition for toner which compromises a polymer component capable of forming a physical crosslinking structure and a polyester not forming a physical crosslinking structure but having a glass transition point of 30 to 80.degree. C. or a melting point of 50 to 120.degree. C.