The purpose of this study is to benchmark current corporate environmental cost accounting practices as they are applied to the capital budgeting decisions in U.S. manufacturing firms. It seeks to provide business managers and government agencies with an understanding of how firms are integrating environmental cost considerations into decisions about environmental investments. Such an understanding can assist firms in comparing their practices with industry averages and in prioritizing improvements. For government agencies, a profile of environmental accounting in relation to environmental investments can help target technical assistance and policy initiatives as well pinpoint those areas of cost accounting where innovation is most visible or, alternatively, most lagging.