How to calculate interest under section 234C?
When is interest payable?	Period of interest	Amount on which interest shall be payable
If the advance tax paid on or before June 15 is less than 12% of the assessed tax	3 months	15% of assessed tax less tax deposited on or before June 15
If the advance tax paid on or before September 15 is less than 36% of the assessed tax	3 months	45% of assessed tax less tax deposited on or before September 15
If the advance tax paid on or before December 15 is less than 75% of the assessed tax	3 months	75% of assessed tax less tax deposited on or before December 15
If the advance tax paid on or before March 15 is less than 100% of the assessed tax	1 month	100% of assessed tax less tax deposited on or before March 15​