Dear applicant to get the details of the amount of fees that you have to pay, you need to go through official Website of your alloted Institute to understand their Refund Policy. If you cancel your seat, you don't have to pay the entire fees, neither you need to pay first year fees also for most of the Colleges. However it is best to go through the refund policy of your institution, unless they ask you to pay something, don't make any unnecessary payments.

Hope it helps!!