EN
The aim of the paper is to describe the economic effectiveness in specialized dairy farms in 2012. Agricultural holdings were grouped according to dairy herd size and FADN region. The study was conducted in 1 233 family farms located in Poland. The results show that the economic effectiveness of milk farms varied regionally. Agricultural holdings keeping more than 50 LU of dairy cows obtained the highest values of output profitability, sale profitability and net worth profitability. Farms keeping 10–15 LU of dairy cows were unprofitable.