how much penalty on addition..?

Jagdish Sharma (16 Points)

27 July 2018  
ITR as follows for A.Y. 2016/17...
( FY 3015/16)

Gross income - 300000/-
less VIA. - 35000/-
Net income. -. 265000/-

In this year other than above income... additional transaction of cash is of 800000/-

what happened if IT Department raise any notice...

is there any penalty ...?

How much ...?

what is calculation method...?