24 November 2017
Yes, advance tax if not paid on or before 15th March of each financial year interest has to pay. Inference - corollary to section 211(1) (b) w.e.f 1.4.2017.
25 November 2017
The whole amount (100%) of advance tax as reduced by the amount paid in the earlier installments On or before 15Th Mar applicable for Assesse covered u/s 44AD