It depends on the college and the major. Most schools prefer that you start looking at a major by your sophomore year. Some schools actually require you to list a major choice on your college application. Fortunately, "undecided" is often one of the available options. At Northern Michigan University, you may certainly indicate a major on your application for admission or you can list "undeclared." Usually, you need to choose a major by the end of your sophomore year at the latest. However, if you are interested in being, for example, a nursing major at NMU, you will need to apply to that major at the beginning of your sophomore year. Some majors require students to apply for a spot in their program while others are open to all students.