How the deduct advance tax works and how it will affect the employee when the employee pays excess?

How the deduct advance tax works and how it will affect the employee when the employee pays excess?

Advance Tax- Advance tax means income tax to be paid in advance instead of Lump sum payment at year end. 

When the Tax paid by the employee (could be in the form of advance tax or TDS) is more than the required amount, he will be eligible to claim the refund of the excess tax paid by him. 

In our system the employees who will be able to deduct advance can be added in the extrapayments. 

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