Many of the stronger business schools require at least half year of calculus. Some might require a year. If you are also considering health professions, engineering, computer science, these areas will require at least a year of calculus. Granted that there are different levels of calculus (i.e., for science majors, for engineers, for non science, etc.) it would do you well by taking at least a year of calculus to give you the flexibility of majors. In general, taking the most difficult calculus (i.e., engineering/math major) would give you the best flexibility.