As per the 6th Pay Commission, arrear is being given w.e.f. January 2006, i.e. financial year 2005-2006. Keeping in view, Income Tax Calculator has been updated w.e.f. F.Y. 2005-2006 or Assessment Year 2006-2007. Now you can check your income tax amount w.e.f. f.y. 2005-2006 for getting rebate u/s 89(i) via year wise bifurcation of your arrear amount.
Click Here to Calculate your income tax w.e.f. 01.04.2005