<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.ili kustahiki, kampuni lazima ziwe zimesajiliwa katika benki kuu ya biashara la banque-carrefour des enterprises kufikia 31 desemba 2020.  <response>: the clause that allows income tax exemption to sezs where most of the it firms are housed will end on march 31, 2020. 