In a regular B.Com course, there are usually around 25 to 30 subjects taught over 3 years (6 semesters). These include both core and elective subjects. Some of the main ones are Accounting, Business Law, Economics, Taxation, Marketing, Statistics, and Auditing. Along with these, you may also study IT, Environmental Studies, Communication Skills, and practical subjects like Tally or Excel. The exact number can change depending on your university or if you're doing a specialization like B.Com Hons.