A field experiment was carried out at Main Agricultural Research Station, University of Agricultural Sciences, Dharwad, during Kharif 2006-07 to assess the agronomic performance of Bt cotton genotypes and their economic returns.  The field trial was laid out in randomized complete block design with total of ten cotton genotypes, including eight Bt cotton hybrids viz, MRC-6918 Bt, MRC-6322 Bt, MRC-7351 Bt, RCH-2 Bt, JK-Durga Bt, JK-CH 99 Bt, NCS-207 Bt, and NCS-145 Bt and two non-Bt cotton hybrids, viz. DHH-11 and DCH-32. Among the tested genotypes (8 Bt and 2 non-Bt genotypes), JK-CH 99 Bt recorded significantly higher yield (3323 kg/ha) which was on par with JK- Durga Bt (3302 kg/ha), MRC-6322 Bt (3230 kg/ha) and NCS-207 Bt (2927 kg/ha). Bt cotton genotypes given higher monitory returns in the form of BC ratio where it was in the range 2.32 - 4.04 rupee per rupee invested for Bt genotypes.