ABSTRACT We study the impact of an MBA‐style executive education course in finance on corporate policies and firm performance targeting top managers of medium and large Mozambican enterprises. Using a randomized controlled trial, we find that the educational treatment induces changes in financial policies that improve firm performance. Specifically, a reduction in working capital (0.4 to 0.5 standard deviations) increases cash flow, and in turn long‐term investments. This effect operates primarily through a reduction in accounts receivable (0.4 to 1 standard deviations). Our findings show that targeted educational interventions can build managerial capital and enhance corporate performance by improving financial decision making among executives.