How much is the total fee for a UG course at IIT Madras?

This varies a bit depending on what program you have taken (since different programs may have different durations), and if you're a day scholar or residential student. A detailed fee structure can be seen here.Also... IIT Madras has several tie-ups with banks for education loans. It also has many different types of scholarships for economically and socially challenged students. Some of these are given by the alumni of the institute itself, while others are provided by companies and the Government of India. You can find a detailed list of these scholarships here.