The non-point pollution rules proposed by the Wisconsin Department of Natural Resources (DNR) have generated questions regarding the costs of compliance for Wisconsin agriculture. It is clear that some agricultural practices will have to change if the proposed rules are enacted, but the costs of these changes are less clear. The DNR proposals include cost sharing for the introduction of best management practices, but constrain the cost share program to essentially out of-pocket expenses. In general, there is no compensation for costs associated with additional management time, or lost revenue. The purpose of this project is to generate a set of estimates relating to net costs of compliance for Wisconsin crop producers. The intent is to develop a baseline for discussion of rule adoption and the share of total costs paid by producers.