Yes. Follow this ……
Gross salary _ PT _ HBL interest (if any) _ HRA exempted( if any) _ Mediclaim (if any) = INCOME, _ Savings including GPF,PPF,LIC,HBL Principle, Tution fees of children etc (up to Rs. 150,000/-) _ 250000/- (SD) = Taxable income.
First up to 250000/-@10%, Second 500000/- @20%, Rest 30% ( we can not get much salary so that we have to pay /calculate second and third phase). Now _2000/- as rebate for 15-16 FY. Now calculate 3% Cess of the balance. that is your payable tax.