Cash deposit in saving bank account more than 10 laces

If there is a cash credit in the bank account, and after inquiry of the AO, the assessee is unable to give satisfactory answer on the source of this cash credit, then the AO u/s 68 shall treat this cash credit as fully taxable under income from other courses and taxed at 30%.

Bank will not ask questions on what you are depositing in the bank locker. So try using bank locker instead of saving account when he cannot justify the cash credit.