Abroad is a mobile slaughterhouse an increasingly established method of slaughtering farm animals. In the M. Sc. Thesis a mobile slaughterhouse is verified economically. A mobile slaughterhouse can be used for all phases of slaughtering from stunning animals to chilling carcasses. The argument for the mobile slaughterhouse vs. stationary is that there is no need for the transportation of live animals in a mobile slaughterhouse. Successful models from abroad were shown and further, based on those a plan for a model of a mobile slaughterhouse located in Slovenia was made. Our mobile slaughterhouse allows slaughtering of four species of animals: cattle, horses, pigs and sheep. With MS Excel program different models were created. For those variables as number slaughtered animals per day, number of cooling and cutting, number of working days and number of kilometres were used. A model where working radius is within 150 km in four day working days per week was calculated as cost efficient. Initial costs of a mobile slaughterhouse and cost of added employee have minimal effect on cost-efficiency. To be cost- efficient 6 cattle, 8 horses, 19 pigs or 22 sheep in a mobile slaughterhouse need to be slaughtered. Costs could also be reduced by adding services as chilling and cutting.