ABOUT SMFL Sumitomo Mitsui Finance and Leasing Co., Ltd. has been a leading Japanese leasing company for over 50 years. SMFL is owned by Sumitomo Mitsui Financial Group, one of the biggest banking groups, while Sumitomo Corporation is a top-tier trading company. SMFL provides aircraft and engine leases to the global aviation industry and other asset-based finance, such as real estate and energy facilities, in addition to other types of finances like financial leases, debt and equity investments, and various financial products.