Gratuity deduct from salary

CA Ankit Jain (Service) (40 Points)

10 November 2014  

my date of Joining in apvt. Ltd. Company is 26/04/2011 & now company deduct gratuity part in my salary per month from October 2014. they are saying it is part of CTC.

i want to know that when will be liable for gratuity. & from when it will be calculate from 26/04/2011 or 01/10/2014

thanks

ankit