If I am not covered Under Payment of Gratuity Act, 1971, what would be the Calculation method?

Gratuity shall be calculated as per the below formula
Gratuity = Last drawn salary x ½ x No. of years of service
Your last drawn salary will comprise your basic + DA+ commission on sales on turnover basis. For computation of gratuity, your service period will not be rounded off to the nearest full year. While calculating completed years, any fraction of the year will be ignored. For instance, if the employee has a total service of 20 years, 10 months and 25 days, only 20 years will be factored into the calculation.
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