If I have top rank in jee advance then what is the fees..

It depends on the colleges. There is some scholarships schemes, tution fee weavers etc.
These things are notified by the college then you look admission.

Thank uuu

Raghav,

Fees of IIT KANPUR IS AS FOLLOWED--

Caution Money (One Time, Refundable)--7,000One Time Fees-----2,450Tuition Fee (per Semester)-----1,00,000Other fees (per Semester)-------1,350Annual Fees-----1,900Total--------1,17,200

Hostel fees are as follow--

Mess Caution Money (One Time, Refundable)-----5,000
Hostel Admission Fee (One Time)-----500
Hostel Seat Rent (per Semester)-----1,250
Water Charges (per Semester)-----25
Mess Establishment Charges (per Semester)-----11,200
Total----------17,975

So this is the detailed fees structure of IIT KANPUR.