EB-5 Source of Funds Korea. They do not have joint filing tax system. Many South Korea investors use their Key Money (jeonse) as an EB-5 Source of Funds Korea and the Key Money (jeonse) is a renter’s deposit (about 50-80% of the property market value) with the property owner. The popularity of the EB-5 immigrant investor visa program in South Korea is nothing new. South Korea was already the second-biggest source of EB-5 investor applicants, after China, in FY2009, according to the visa statistics published by the U.S. Department of State. In FY2020, the country remained on the top-five EB-5 countries list, with a total of 152 EB-5 visas issued.