You do not need to major in business. However, those who did not major in business or did not take business-core courses in econ, stats, and intro accounting typically will be forced to take them in their first semester. Business majors bypass this entirely and can jump into the higher courses right away. So you do save some time by being a business major, but this should not be a decision maker to be a business major or not. Major in what you find interesting, can earn good grades in, and can find work in after you graduate. Professional work experience is very important to any business program worth its salt.