This study examines how three dimensions of the business planning process (presence, formality, and timing) affects the venture creation process, overall. The dimensions of the business planning process we focus on are: presence (whether a business plan has been completed), formality (whether the business plan is written down), and timing (when the business plan was completed in the business creation process). We measure the venture creation process by examining the rate of entrepreneurial activities undertaken in a given period of time; the concentration of these activities (how closely activities are undertaken in relationship to each other); and the timing of these activities (the degree to which activities tend to cluster early or late in the time span of the event history). In general terms then, this study explores whether and when business planning might be an impetus towards entrepreneurial action.