On-farm measurements of nitrous oxide that were made to inform New Zealand’s Greenhouse Gas Inventory revealed that waterlogged pastures produce more nitrous oxide. This led to research funded by New Zealand in support of the Global Research Alliance to find out whether nitrous oxide production could be reduced by providing farmers with advice on when animals should be taken off pastures during wet conditions, which would not only reduce emissions but also nitrate leaching and limit pasture damage. This work was carried out using farm data and measurements from New Zealand, Ireland and the United Kingdom. The results from this study highlighted that the benefits and feasibility of managing stock on waterlogged pastures can differ significantly between countries and soil types, emphasising the need for a national and even region-specific approach to mitigate GHG emissions.