Here is the Gratuity amount based on the no. of years of service.
Less than one year – 2 times the basic pay
One year or more but less than 5 years – 6 times the basic pay
5 years or more but less than 11 years – 12 times the basic pay
11 years or more but less than 20 years – 20 times the basic pay
20 years or more – half the salary for every completed 6 monthly periods subject to a maximum of 33 times of salary.