234(c) Interest Calculator Tax after TDS/TCS Advance tax paid till 15 Jun Advance tax paid till 15 Sep Advance tax paid till 15 Dec Advance tax paid till 15 Mar Extraordinary tax for Q1 Extraordinary tax for Q2 Extraordinary tax for Q3 Extraordinary tax for Q4 Calculate Advance tax to be paid till Q1 Advance tax to be paid till Q2 Advance tax to be paid till Q3 Advance tax to be paid till Q4 Interest for Q1 Interest for Q2 Interest for Q3 Interest for Q4 Total interest u/s 234(c)