Hi, you need income certificate for fee waiver in NIT for btech in OBC . It will be needed at the time of admission. your income certificate is below 5LPA then you will get tution fee exemption and your income certificate is below 1LPA then you can get 100% tution fee exemption. More for below 1lakh income certificate there is exemption in counselling time also. You have to pay only 15000 instead of 45000.