This bulletin represents a tool that can help producers, consultants, educators, and agribusinesses working with producers estimate costs of production and expected profit based on "typical" onion management strategies found in Michigan. Because sorting and packing practices differ widely throughout the industry, this budget DOES NOT include the costs of sorting, packing and bagging. It represents the cost to produce onions up to their delivery to a packing facility. The budget included in this bulletin will allow users to revise inputs based on their management strategies and calculate their expected cost and profit. This flexibility provides a decision aid to search for systems that generate higher net returns to the farm's resource base.