Key money
Key money is one of several forms of payment made to a landlord. The term has various meanings in different parts of the world. It sometimes means money paid to an existing tenant who assigns a lease to a new tenant where the rent is below market. It sometimes means a bribe to a landlord. In other parts of the world, it is used synonymously with normal security deposits, which are used to cover nonpayment of rent and excessive damage to a rental unit.