How to calculate interest under Section 234C if the assessee has opted presumptive taxation scheme of Section 44AD or 44ADA?

Ans. If the assessee has opted presumptive taxation scheme of Sections 44AD or 44ADA and advance tax paid on or before March 15th is less than 100% of the assessed tax, simple interest at the rate of 1% shall be charged for 1 month on the shortfall amount (i.e. 100 % of assessed tax less tax deposited on or before March 15).​​