Normal Security Deposits
The term "key money" is used differently 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.
In Japan, reikin (礼金?, literally, "gratitude money") is a mandatory payment to the landlord that is often the same amount as the original deposit (shikikin). However, reikin can be the equivalent of six months (or more) of rent, but is typically the same as one to three months of rent.
In recent years, an increasing number of landlords and real estate agencies have begun to offer reikin-free" rental housing.
Main article: Jeonse
In Korea, the key money system (as opposed to monthly rent or wolse) requires the lessee to make a deposit of about two-thirds the total monthly rent. The key money is returned when the lease expires. The key money deposit will not be returned before termination of the lease unless another lessee replaces the outgoing lessee.
In the United Kingdom, it is illegal for landlords to require key money.
In France a tenant that has a lease that is below market can assign that lease to a new tenant. The new landlord is required to accept the original rent from the new tenant. The new tenant essentially buys the lease from the original tenant. The capitalization factor is financial and strategic, depending on cost of money, importance of the site to the taker and the location of the site. The ratio used goes from 0 (poor locations) to 12 (top locations e.g. Champs Elysées). Remaining number of years of the contract has little/no impact unless it falls under the legal provision of déplafonnement du loyer, meaning the landlord is automatically legally allowed to ask for a new, market-rate rent irrespective of the rent paid so far.
In the United States, it is illegal for landlords to require off-the-books key money. The terms of the written lease can be enforced in court. However, a cash bribe, styled as "key money," may be demanded in cities with strict rent controls. Because it is paid in cash, it can be very difficult to prove in court.
Generally in America, apartment leases are not transferable without the consent of the landlord. The primary exception is the right to rent a space in a mobile home park, which is frequently transferable, frequently rent-controlled, and frequently subject to French-style "key money" payments to the original tenant in the form of buying the current mobile home at an inflated price. The new tenant can then junk the existing, outdated trailer and replace it with a modern one while keeping the terms of the original lease for the land underneath it.
It is also common in many countries to require key money in the form of a security deposit. In the United States, for example, it is common for a landlord to require the equivalent of one or two months rent as a security deposit to offset delinquent rent payments or damage to the property during occupancy. This deposit is held in escrow and is refunded when the tenant moves out, less any repair costs or unpaid rent. Some renters have complained that unscrupulous landlords illegally take some or all of this deposit to supposedly pay for cleaning and repairs. Landlord-tenant laws in the United States typically specify that a landlord must provide a detailed accounting of all deductions from a security deposit on request, and normally cannot charge for "normal wear and tear," such as replacing old carpets or painting walls that have not been painted for many years.