Is there any difference in calculation of gratuity for employees who are not covered under the Gratuity Act?

Is there any difference in calculation of gratuity for employees who are not covered under the Gratuity Act?

Even if you are not covered by the Gratuity Act, your employer may pay you gratuity.

The calculation for this is: Gratuity = Average salary (basic + DA) * ½ * Number of service years.
In this case, the service years are not rounded off to the next number. So if you have a service of 12 years and 10 months, you get gratuity for 12 years and not 13 years.