Money paid in advance to protect the provider of a product or service against damage or nonpayment by the buyer. For example, landlords require a security deposit of one month's rent when a tenant signs a lease, to cover the possibility that the tenant will move out without paying the last month's rent, or that the tenant will inflict substantial damage on the property while living there. In such a case, the money from the security deposit is used to cover repairs. Similarly, car leasing companies typically demand security deposits for the last month's lease payment to protect the leasing company against damage to the car or nonpayment of the lease. If all payments are made on time and there is no damage, security deposits must be returned to those who paid them.




