The conditions of IRCTC for cancellation of tickets are clearly updated in their official portal. If any ticket has been cancelled within the due time of 1 hour from the departure, The cancellation of the ticket will get 50 percent fair price of the total ticket fare including GST deducted. In certain cases there will be no refund for the ticket, as 4 hours is seen as a 50 percent refund mark time by IRCTC.