Please help

section 69 is for unexplained investment.

2 conditions must satisfy in order to attract section 69

1] investment must not be recorded  in the books of a/c AND

2] assasse can't give any satisfactory explanation to AO as to the source of such investment

both the conditions must be fulfilled to attract section 69.

if both of these conditions fulfilled  then After making the addition , the AO may initiate the penalty under section 271(1)(c) either for concealment of particulars of income or for furnishing inaccurate particulars of income depending on the nature of addition made by him.

so the penalty depends on the nature of addition made by AO. ok.

i think there is no slab rate.