For Dutch arable farmers, macronutrient fertilization is rather restricted by legislation than availability of manure. Farmers need to be strategic in utilizing the legislative limit for organic manure. Recently, the legislative limit on N-application from manure has sometimes been lower than the agronomic advice. Despite this, the N-balance (application minus offtake) is still positive in most cases, indicating that N-use efficiency is the limiting factor, not the amount of N applied. Various tools have the potential to support more precise nutrient planning, such as Tipstar, a growth model that uses soil, crop, fertilization, and weather parameters for topdressing and irrigation of potatoes. Another tool is NDICEA, a model that couples expected yield with soil, weather, and management history, helping to predict an overall N-balance. Some farmers already use N mineralization analyses and yield analyses to support nutrient decision-making, but the use of interactive tools to predict yield gaps or overapplication of N is not yet common. In the coming season, farmers, together with advisors, will try to better understand the utility of these tools.