Trust companies are faced with new trust business opportunities pursuant to the amended Trust Act in 27th July 2012, the complete revision since 1961 when the Trust Act was first enacted. The main contents and characteristics of the amended Trust Act can be summarized as follows; Enlargement of the scope of assets for trust, establishment of trust by declaration, re-trust, and beneficiary certificates issuing trust. Since those amendments have been already applied to Japan\'s trust industry by the 2004 Amended Trust Business Act and the 2006 New Trust Act in Japan, we can seek the possible trust new business models by finding out the trust business models created in Japan after all the reformation of the laws of trust in Japan. Among the possible trust business models created in Japan, It is likely that \"Trust as a will substitute\" and \"beneficiary certificates issuing trust\" is expected to be vitalized first in the trust industry of Korea. However, in practice, there are some limitations and obstacles to be solved for each of them respectively to be vitalized successfully. First of all, the issues and limitations regarding taxation, real estate registration, entrustment of trust of security, and accounting should be clearly solved for trust as a will substitute. Also, for beneficiary certificates issuing trust to be conducted actively, trust taxation should be considerably reviewed and clear trust accounting scheme should be organized.