Which course should I opt after B.Com?

Hi, You can do MBA but you have choose a better college for MBA, and you can do CFA, CMA also. Some other certified courses comprise cost accounting, corporate accounting, taxation, etc. In my point of view, you should do MBA in finance or you can join taxation course. All the best!

Since you are from commerce background, you can opt for MBA in banking and finance. Try to qualify CAT, MAT or CMAT exam to get admission in a top B-school.

You can't define it clearly. I feel that you have to proceed based on your aptitude and inclination and you will get success. Much depends on the amount of work you put in.