query relation to salaried employee

Dear friends,

I have a query please help me if u can

whether it s mandatory for a salaried employee to disclose its all incomes

or based on his choice

its based on employee's choice..

It is the choice of an employee to disclose all his income to his employer for TDS deduction purpose. If his income from all his sources disclosed to employer, the employer will deduct TDS based on that. Otherwise, the employee can disclose his other sources of income when filing income tax return.