If the ticket is cancelled before atleast upto 24 hours before departure of train Rs. 40/- + IRCTC Charges + Gateway Charges (the later two are in case of E-ticket)
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If its presented for cancellation less than 24 hours before departure of train 25% of Ticket fare + IRCTC Charges + Gateway Charges (the later two are in case of E-ticket)
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more... If cancelled after chart preparation/departure of train 50% of Ticket fare + IRCTC Charges + Gateway Charges (the later two are in case of E-ticket)
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For more details can refer to
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