A field experiment was conducted to study the response of new paddy genotypes to varying levels of nitrogen at Bhadiarkhar experimental farm, Department of Agronomy, College of Agriculture, CSK HPKV, Palampur during kharif season of 2021. The experiment consisted of twelve treatment combinations which included three genotypes (HPL 19, HPL 26 and HPR 2143) and four levels of nitrogen applications (0, 45, 90 and 135 kg ha-1) which were tested in randomized block design. The soil of the experimental site was acidic in nature, silty clay loam in texture, lower level of nitrogen and medium level of phosphorus and potassium. The results indicated that, HPL 26 recorded the highest grain (30.86 q/ha) and straw yield (40.78 q/ha) while HPR 2143 and HPL 19 recorded the lowest grain yields. A linear increase in grain yield was observed with continuous rate increase of nitrogen from 0 to 135 kg N ha-1, while 135 kg N ha-1 treatment showed maximum grain yield (39.97 q/ha) followed by 90 kg N ha-1. Net returns and benefit cost ratio was found to be higher when HPL 26 was fertilized with 135 kg N ha-1. HPR 2143 fertilized with nitrogen level @135 kg ha-1 resulted in higher nitrogen use efficiency (NUE) among all other possible combinations. It was concluded that among different rice cultivars, HPL 26 proved best for better productivity and profitability whereas in case of different level of nitrogen, 135 kg N ha-1 was found better to enhance crop productivity and profitability.