Now, NSDL R.P.U. ITR-4 is ready for online submission of Income Tax Return for Individual and HUF's who have income from Proprietor Business and Profession. It is excel based utility. This utility also contains Income Tax and Interest calculator on Computation of total income sheet named Part B-TI.
To download and read more regarding R.P.U. (ITR-4) Click Here
New excel based form 16A applicable
w.e.f. 01.04.2010 is also available at http://www.fastworking.blogspot.com