It was evaluatedthe bioeconomic impact of the breeding soundness evaluation on beef cattle productionin southern Brazil. Two similar production systems, with and without the useof breeding soundness evaluation, were compared during 4 years in the municipalityof Júlio e Castilhos. The rate of unsound bulls in the first examinationwas 22.8%. By performing the examination, calf production increased by 31%,13.8 calves/bull/year and 24 kg of calves/cow/year. The benefit/cost ratio onthe investment with the breeding soundness evaluation was R$ 35.84. The breedingsoundness evaluation improves bioeconomic aspects of beef cow-calf systems.