Hi Dear,

If you want to appear for CA Final course, then doing Bcom course is not mandatory. However, it is mandator for you to pass CA-CPT (or bcom 2nd year in case of direct entry) and  CA- IPCC and completed 2.5 years of articleship. However, if you want to pursue Bcom then you can do so for entry into the course. But you'll still have to appear for CA ipcc and then ca final.

good Luck