IIM

Hi,
The eligibility conditions are:
1) Candidates appearing for the final year Bachelor's degree / equivalent qualification examination and those who have completed degree requirement and are awaiting results can also apply.
2) The candidate must hold a Bachelor's degree, with at least 50% marks or equivalent CGPA. In case of the candidates belonging to Scheduled Caste (SC)/ Scheduled Tribe (ST) and Differently Abled (DA) category, this is relaxed to 45%.
3) The first stage is appearing for the CAT Exam conducted by the IIMs. On clearing the required cutoffs and the composite score, a candidate is called for Writing Ability Test (What) and Personal Interview (PI). From 2015 onwards, what has been replaced by Academic Writing Test (AWT).
Try to have at least 90 and above percentile to get a top IIM like IIM Calcutta , Ahmedabad, etc.

Hello Nikhil,
You have got enough time to prepare for CAT & GMAT.If you want to get into IIMs, one thing you can do is practice with complete dedication. Know your weak areas and practice more n more. It is very essential to understand time management. For that , make practice papers with your timer on.
and
If you want to do MBA from outside India, CAT isn't going to be useful. However, not all MBA programs require GMAT. Some are fine with GRE. I've heard some MBA programs don't even require an entrance test if you satisfy some other requirements such as CFA Level 3 cleared. Also, all MBA programmes outside India require at least two years of experience.
Good luck!