Hi,
The input given by our members Shrikumar & Amit is very right.
The Payroll is a dept. which generate salary and does the Tax calculation for all the employees in the organization.
The HR and the payroll works hand in hand. The salary intimation is given by the HR to the payroll dept. according to the cut off date.
The intimation consist on LWP, new joinees, increment , promotion ,transfer , internal company transfer, bank account no,salary on hold intimation when an employee resigns. etc.... any other intimation.
Tax part is done by the payroll, like tax declaration forms, form 16 .
Once the intimation is given to the payroll dept. they do the data entry , checking and then the salary is processed and according to the funds availability the salary is released to the individual salary account by the first week of the month.
I hope this will help you to understand.
Thanks,
Uttama