Hi Kishore. There are various courses that one can do after 12th commerce with maths. Streams like B. Com, BBA, B. com Hons, Law, Journalism and Mass Communication, etc are available. Moreover, one can prepare for CA, or competitive exams for government services. Well, it depends on you and your interest. So, you should make a choice according to your choice and ultimately that line would become better for you. Also, you should make up your mind that what you want to be, and then you can choose your course easily. In addition to that, i would say that Chartered Accountants are in high demand these days, so if you are interested, you can try that!