Your landlord may retain some or all of the security deposit to make repairs for damage other than normal wear and tear. Your landlord can keep your security deposit to cover any unpaid rent at the end of the lease term. A security deposit may also be forfeited if you break the lease. The landlord can charge you for cleaning a rental unit after move-out if you failed to do so—but the charges should be reasonable and only bring the property back to the condition it was in before you moved in.