How to get the 150 credits for CPA exam when major/minor is in business department?

My student will be an accounting major and is thinking about having a minor in Finance. That being said, wouldn’t the overlap of the same department cost me more in order to get the 150 credits? Would this require him to take an extra course in May? Or online? Just want to ask some who maybe could offer advice since the business department is not in the office much over the summer.