 There's no hot and fast rule, a lot of the times people can't understand maybe why a landlord would be requesting a deposit equivalent to two months, but basically the Rent-to-Housing Act stipulates that the landlord may not request a deposit more than what the parties have essentially agreed to. So the purpose of a security deposit, I think the clue is in the name you know basically to be kept until the end of the lease term for the purposes of securing the landlord's right to get the property back in the same condition in which it was given to the tenant. So one thing of importance is that when the landlord requests deposit that will be paid usually prior to commencement of the lease agreement and is either paid to the agent or to the landlord.