Experimental investigations on cyclic behaviour of reinforced concrete (RC) structures have demonstrated that, bidirectional flexural deformation is more, compared to unidirectional response considered in each direction separately. Biaxial lateral load interaction, therefore, has a significant role on the dynamic responses of structure. The present paper presents a new formulation of the biaxial force-deformation model, accounting strength and stiffness degradation in a rather simplistic manner. Also the modelling scheme does not require computational rigor. The present effort is based on yield surface approach of biaxial modelling scheme. The validity of the proposed model is appraised through available biaxial tests of RC column. Compared to other existing models, present model requires simple input parameters and the prediction of hysteretic responses are quite faithful. In the RC structures this model may pertain to evaluate the hysteretic responses with fair accuracy during seismic loading. Attempt has also been made to generate a suitable database for realistic estimation of the degradation parameter required for the model.