In 2005, Korean banks' net income rose significantly, surging 52.4% over 2004. Net income for 2006 is expected to be slightly less than that for 2005. The high level of net income may be unsustainable though, because windfall gains from marketable security sales and reserve transfers will dissipate in 2008. To increase net income more steadily, Korean banks have diversified their main lines of business from loans and deposit business to fee based business. To the Korean banks, investment products sales represent a major opportunity to increase fee-income. Unfortunately, Korean banks often fail to provide necessary advisory services, such as optimizing asset allocation, before selling specific investment products. To sell investment products effectively, Korean banks need to streamline sales procedures. The sales person in the bank should recommend appropriate investment products, considering the customer's investment goals, risk preference, and investment time horizon.