The long-time practice of shop key money that has existed in the relationship between the lessor and the tenant has caused side effects such as the ambiguous meaning of key money, the speculative use of shop key money and the hindrance of the economic independence of small business owners, and these side effects result in disturbing the lease market and injuring the legal status of the lessor and the tenant. Under the circumstances, the government acknowledged shop key money, which has been traded underground, customarily or conventionally, as a major property value to protect the property rights and business security of the tenant who is relatively disadvantaged in comparison with the lessor, and that took measures to approve of it as an object of legal transactions. The government pushed ahead with the legalization of key money to protect local small business owners, and revised the shop key money protection regulation(hereinafter called the key money protection regulation) of the law for the protection of commercial building tenants(hereinafter called the law for commercial building tenants) on May 13, 2015. Meanwhile, it's argued that when the livelihood protection and property rights of the tenant are taken into account, the intangible property value of shop key money should be regarded as an object of compensation for loss if it is damaged publicly on account of the performance of public services, or that key money should be compensated when a shop is shut down. Thus, the importance of the compensation for the loss of shop key money has been recognized. As compensation for loss is acknowledged in case of the infringement of property rights, it can be an object of compensation if key money or the right to receive it is a sort of property in nature.