Is it possible to join MBA program into B-schools in july/august or when the session starts for 2016-18?

Hi! Vishnu above, has a very valid point. MAT happens 4 times a year – September, December, Feb & May. Dec and Feb do seem to be a better bet. However, do not be disheartened. I hope you're not writing just one MBA exam & putting all the eggs in one basket! There are other reputed B-schools that you

Yes but most of the best b schools accepting MAT score will close its admission by the time of April/May. Only few colleges will consider MAT score of MAY. So if you want to make into a best b school it is better to write Dec/Feb MAT.