Dear applicant till date the best course to work in a bank after your 10+2 remains the B.Com course. It gives a better site of the job followed by best possible rules to get a job into any bank, yes there are possibilities that you can directly apply for different entrace exams conducted by Government Banks like State Bank of India, Allahabad Bank, Union bank, or other banks like ICICI Bank, Axis Bank etc. as well. You need profound knowledge on logical reasoning aptitude test, basic mathematics and statistics as well.

https://www.careers360.com/careers/articles/bank-jobs-after-12th-counar

Hope it helps!!