The policy regarding major/minor overlap can be found in the Bulletin.
Some students pursue majors and minors that address the same topic from different angles or that are complementary in some way. In these instances, there may be courses that could count for the major, the minor, or both. BU’s policy is that every minor must have twelve credits unique to the minor, that are not shared with the major or any other minor. After that, double-counting between the major and the minor is allowed. Individual Schools and Colleges may also have policies regarding major/minor overlap. Students should consult their academic advisor to confirm how courses may be double-counted.