Form 16

https://cleartax.in/Guide/UnderstandingForm16

refer above link to get the better idea about form 16

Form 16 in reference to Income Tax is a certificate of TDS deposited by employer on behalf of his repective employee(s). It consists of two parts - Part 'A' and Part 'B'. Part 'A' is issued from Income tax to the employer and Part 'B' is synopsis of employee's salary and investment details prepared by employer itself. Every year whole Form 16 is collected by employee from his employer for TDS deduction, if any, by employer.