Income tax on tuition fees and brokerage

Respected Sir/Madam

Please reply as per following :---

Status : Individual ---- Male ---- Age: 50 yrs. 

Profession : Private Tuition and Brokerage

Total Income Rs. 400000/- lakhs in one financial year

Source : Tuition and Brokerage

Source of  documents to submit : No proof of documents for said Income

Bank deposit : Total 400000/- lakhs deposited in bank

Question : This person want to Pay Income Tax on Rs.400000/- Lakhs . But he has No Proof of documents of Incomes...

Then it is  possible to pay Income Tax ???? 

If yes, then how to take preparations....

Thanks.