How is zakat paid on an internet cafe that has 12 computers?

There is no zakat on computers prepared for rent, because the Prophet, peace and blessings be upon him, said: "There is no sadaqah on a man for his slave or his horse." Zakat is obligatory on the club's profit if it reaches the nisab and a year has passed over it. Islamic regulations must be observed in managing the club and preventing access to forbidden websites.