Business planning is often conceptualized as isomorphic behavior conforming to normative forces (e.g., Honig and Karlsson, 2004). Despite extensive research on business planning, this research stream has not sufficiently considered the alternatives to planning. Particularly in nascent firms, we propose that procrastinating and taking other startup activities should be discriminated as alternatives of planning because the two have different implications on performance, potentially blurring performance implications of business planning. We argue for positive performance implications of early action as well as early planning. We also investigate antecedents of the different entrepreneurial behaviors and hypothesize that people with advanced education tend to engage in early planning. On the other hand, experienced entrepreneurs are more likely to engage in early action but less likely to engage in early planning.