For worldwide meat production (334 million tonnes in 2017) has the largest share of pork (36%) and poultry (33%). Beef was the third major species with a production of 66 million tonnes and a 20% share. The Czech Republic is currently self-sufficient in beef production, but the economic advantageousness of beef production is essential to ensure future self-sufficiency. And because a large proportion of beef production in the Czech Republic comes from bulls, achieving a reasonable level of profitability in bull fattening is a necessary condition for maintaining beef production. The data for the calculations are based on data obtained from bull fattening operations in the Czech Republic. Costs in 2018 for the period of fattening, i.e. from initial bull entering fattening to slaughter were at 40 thousand CZK for a bull and at the sale price for a slaughtered bull 34 thousand CZK was an average loss. The basic conditions for a favorable economy of fattening bulls include high daily weight gains, optimal slaughter weight, good health and low death losses, etc. Despite the fact that the majority of beef in the Czech Republic comes from cattle breeds with dairy and combined yields, a significant part of domestic production is provided by cattle meat breeds. The monitored farms with breeding suckler cow in 2018 at the cost of 34 thousand CZK per cow and year achieved on average positive profitability of 3.9% including subsidies. The main conditions for making a profit include, in particular, a high number of calves weaned and their high selling price.