Tds on salary.

Kunal Lodaya (Student CA Final ) (35 Points)

29 June 2015  
Dear sir/ mam, One of my client has two firms and d same employees. I want to calculate TDS on salary of the employees of both the firms. Can you please help me in how to calculate the TDS on the same as they are workinf for two firms of the same person. Thanx a lot in advance.