In this paper the fishermen's planning and investment horizon is investigat
ed using their discount rates. It is shown that one might calculate the imp
licit discount rate in an ITQ regulated fishery from the available informat
ion from the quota market. This gives information about how well the system
is working. In particular, discount rates where ITQ systems are in operati
on initially were very high, before they started to decrease. This implies
that it take some time to reap the full benefits of an ITQ system. It also
gives arguments for not letting ITQs be perpetual property rights, and henc
e, enables more flexibility in the management system.