Hi ,

A bachelor's degree (minimum 10+12 +3years of formal education or  equivalent in any kind of discipline ).

At least 5 years of ful timefull time post qualification professional experience as on march31 2019.

Valid GMAT score.

These are the eligibility you have to appear for CAT  exam ...

Then candiade will be shortlisted from acdemic score and cat scores and called for interview .

Based on your overall percentage and marks you can her admission in to IIM Kolkata

For more info visit here...

https://www.iimcal.ac.in/programs/pgp/admission/admission-policy/admission-procedure-for-domestig-candidates

Thanks.