Abstract New products are critical to the success of most corporations. But managing the R&D projects that produce new products has proven to be a risky and tricky business. Theorists and practitioners claim that one of the major obstacles to higher new product output is the ‘tight’ control practices found in large corporations. The conventional wisdom argues that, to correct this, firms need to find ways ‘to loosen‐up.’ But is that all there is to it? This article presents five findings for effectively controlling new product R&D projects. These findings emerged at the conclusion of an empirical research investigation into the formal and informal control practices that business unit managers use to control various new product R&D situations. The article concludes with several recommendations for those managers who want to control their new product R&D projects better.