At the time of admission you can whole sem fees at a time or in two installments if you are getting seats from the counselling you must at least carry 20,000-30,000INR to get a seat. Or if you are taking direct admission just go to the seat it will give you a fee structure if you are applicable . The link provided by me will help you. https://www.google.com/amp/s/engineering.careers360.com/articles/nit-patna-fee-structure/amp