Cancellation of I-tickets after departure of trains (This should be applicable to paper tickets from PRS as well:
#
I-Tickets can also be cancelled in the above manner, at the boarding station, within 4 hours before the scheduled departure of the train and
Up to 3 hrs after actual departure of train for tickets up to a distance of 200kms
Up...
more... to 6 hrs after actual departure of train for tickets up to a distance of 201-500kms.
Up to 12 hrs after actual departure of train for tickets over a distance of 500kms.
In all the above cases, cancellation charges will be 50% of the fare subject to the minimum flat rate.