Tax saving fd

Hi 

I have invested 30000 in tax saving deposit in the year 2015  to claim under 80c.Now the fd is matured and got paid out in January.i got 46216 in return.Now the interest amount what I earned (46216-30000= 16216)  is to be declared as income other than salary? Or entire 46216 to be declared as income other than salary? Or is it not necessary as it is tax saving FD?