The Milk Price Tracker article provides an overview of the milk prices offered by major Irish dairy co-ops for January, detailing any changes in base milk price using a standard pricing system. It also covers bonus and penalty payments, including those for milk with low somatic cell counts or total bacteria counts, and bonuses for high protein content or early calving. Some co-ops offer additional bonuses for milk with certain quality characteristics or for farmers who commit to sustainability programs. The article highlights the varied bonus structures among the co-ops, providing a comprehensive summary of the financial incentives available to milk suppliers in Ireland.