The main objective of the research was to assess the economic results of dairy cows, cattle for slaughter and porkers in 2019 depending on the scale of their production. The research was conducted on commercial farms, which sell their production. These farms were purposively selected from a representative farm sample that was in the field of observation of the Polish FADN system. Data describing the agricultural activities were collected in the AGROKOSZTY system, and then supplemented with data from the Polish FADN database. The results of the analysed production activities were influenced by production potential of farms, i.e. resources of land, labour and capital, their quality and the manner of use, but they were also dependent on external conditions (e.g. market). These impacts resulted in varying degrees of changes in the unit costs and price of products. In 2019, the income from the analysed production activities was within fairly wide limits. However, the positive impact of the size of the production scale was visible. In each group, there were farms where production was unprofitable, but in the case of large-scale production, the percentage of farms with an indicator below 100 was always the smallest.