Computation of gross salary

It would be great if anyone help me to compute Taxable Income from the below details. I need this to pay Self assesment TAX and submit ITR2.

TOTAL TAXABLE INCOME FROM SALARY(INCOME) = 408000.00  It including HRA, perfomance allwce, i.e INCOME CHARGEABLE UNDER THE HEAD SLARY) 

salary slip break up following

Basic salary 24480,HRA 8500,Perfomance allowance 1020. (total 34000)