What Does Consulting Do?
This paper provides the first systematic and comprehensive empirical study of management and strategy consulting. We unveil the workings of this opaque industry by drawing on universal administrative business-to-business transaction data based on value-added tax links from Belgium (2002-2023). These data permit us to document the nature of consulting engagements, take-up patterns, and the effects on client firms. We document that consulting take-up is concentrated among large, high-labor-product