05 March 2014
interest under 234B is charged where advance tax paid is less than 90% of the assessed tax. The rate of interest is 1% for each month or part of the month starting 1 April of the Assessment year to the date of 143(1)/143(3) order.
the interest is charged on the difference between assessed tax less any advance tax paid, TDS credit, any relief under section 90/90A, 91, tax credit under 115JA/115JD.