I am employed in an UGC recognized state govt aided college. This is the first time I am subjected to income tax deduction and I would like to get my doubts clarified regarding it. First, is it compulsory for the college authority to deduct the income tax considering all kinds of income (salary, fixed deposit, bank interest) or can I submit the income tax through my personal tax consultant? What if I make mistake in calculating my income tax (more or less than the actual amount)? Second, when is form no. 16 required in the process?