hi,
Encashment of leave means that employee will receive the cash for leaves which are not taken by the employees. Employee can encash his leaves during the course of employment but this amount will be fully taxable or he can encash at the time of retirement but he will get some exemptions:
These are divided into two categories:
(i) Government Employees (Central and State Government only): Leave encashment of accumulated leave at the time of retirement, whether on superannuation or otherwise, received by a Government employee, is fully exempt from tax.
(ii) Other Employees: Encashment of accumulated leave at the time of retirement , whether on superannuation or otherwise, received by other employees (including employees of Local Authorities and PSU) is exempt to the extent of the minimum of the following amounts:
a. Rs. 3,00,000/-
b. Ten months average salary;
c. Cash equivalent of unavailed leave calculated on the basis of average salary of maximum 30 days leave for every year of actual services rendered to the employer from whose service he has retired.
So as per above explanation PSU falls under other employees. and on that basis Minmum Rs 3 Lakhs has been considered as exemption considering that was the minimum of the above three calculations in your case.