can i do mba from iims after bba in nashik and after clearing cat?

Ofcourse you can do your mba after having a bank job experience rather it would add up to your resume which will surely be advantageous to your admission to top iims. But you need to score atleast 95% in cat to get good bschools. Prepare yourself accordingly and also prepare yourself for the question in the interviews that why do you want to shift from bank job to mba.

Yes you can do ,mba from iims if you clear cat with good notes.

CAT Eligibility Criteria 2020 - Educational Qualifications

As per the CAT exam eligibility criteria 2020 candidates must hold a Bachelor’s Degree from a recognized or statutory institute/college as incorporated by an Act of Parliament or State legislature in India or declared to be deemed as a University under Section 3 of the UGC Act, 1956, or possess an equivalent qualification recognised by the Ministry of HRD, Government of India

Students must have an aggregate score of at least 50% or equivalent CGPA for general, EWS and NC-OBC categories. Whereas, aspirants belonging to reserved category (Scheduled Caste (SC), Scheduled Tribe (ST) and Persons with Disability (PWD) categories) must have an aggregate of 45% or equivalent CGPA.

Candidates who are appearing for the qualifying examination or the results are awaited can also apply, however their admission will be provisional. Such students, if selected, must ensure that they submit a certificate from the registrar/principal of their institute/university stating that they have completed all the requirements for obtaining the bachelor’s or equivalent qualification.

Aspirants of CAT 2020 must fulfill any of the following conditions:

Completed graduation with the minimum percentage of marks.

Should be in the final year of qualifying examination with minimum percentage of marks

Should have completed a professional degree (CS/CA/ICWA) with required percentage.

For information of cat examination in details get onto the provided link---

https://bschool.careers360.com/articles/cat-eligibility-criteria

Hope so that may help you.

Thank you.