The number of farms implementing robotic milking systems, usually referred as automatic milking systems (AMS), is increasing rapidly. AMS efficiency is a priority to achieve high milk production and higher incomes from dairy herds. Recent studies suggested that milkability (i.e., amount of milk produced per total time spent in the AMS [kg milk/ minute of boxtime]) could be used for as a criteria for genetic evaluations. Therefore, an indicator of milkability was developed, which combines economical and efficiency aspects: Milk revenue per minute of boxtime (MRBT, Can$/minute). The MRBT can be used to help producer daily decisions in retaining or not a cow in their herds, and improve AMS efficiency and herd profitability. The aim of this study was to assess the feasibility of using the MRBT indicator to give producers a management decision tool on the selection of lactating cows. Data was extracted from the software of 12 herds equipped with Lely AMS. Data included daily milk production, milk components (i.e. fat, protein and lactose percentages) and milk production per minute of boxtime of each cow for a period of 24-h. As the data was only available for a 24-h period, a second data extraction was done at different dates for three of the herds to validate the MRBT across time. The use of the MRBT as a tool to select individual cows was tested looking at variation between cows and herds. The overall average of MRBT was $1.23 ± 0.32/minute, and it ranged across herds between $1.15 ± 0.36 to $1.48 ± 0.29. However, variations within herds were larger ($ 0.35 to 2.58/min).The economic impact of using MRBT for taking decisions in retaining or not cows in the herd was assessed by replacing 10% of the less performing cows with the average performance of each herd. On average, this resulted in an increase in milk revenue of $124.91/day, which sums up to $45,593/year. Results showed variations between herds going from $64.30 to $213.57/day. These observations suggest that cow selection in real time with the MRBT indicator is possible and can improve herd profitability.