Which stream should l opt to make career in the field of banking?

You have not mentioned your present qualification. You can look at pursuing either B.Com or BBA. Ensure that you score a minimum of 60% in your final year of graduation. After this, you have two options. The first option is to start applying for bank openings under IBPS, as in, clerical or probation

As from any stream you can make your career in banking but commerce will be the best in all to become a banker.

Smeera for a career in banking better option for you would be to go for B.Com, B.Com (H), B.Com (Professional). As for banking commerce/ accounts is required. Theses days some universities also offer integrated B.Com-MBA too. This can also be a good option. Good luck.