For filling itr 1 form 16 necessary

Sir, My client has 2 source of income. One is salary from a pvt company Rs. 8,000 /- p.m which received through bank account. Another is hiring vehicle to a company from where he is getting Rs. 20,000 p.m. My question is that = 1). Salary which he has received through Axis bank account can he shows in salary income in IT file without form 16 as his employer not deduct any TDS. 2). For the hiring charge of vehicle which he has received can he shows Rs. 7,500 /- per vehicle p.m in ITR 4s as presumptive basis along with salary income shows in it? He want to shows his income to IT dept. 3). Any advance tax liability will arise for him as from A.Y 2017-18 I have heard that advance tax applicable for presumptive income. Pls clarify my question anyone.