Abstract: A computerized mortgage implementing system includes a central service computer, which helps establish and maintain mortgage plans based upon mortgages at least partially collateralized by investment vehicles. Both a plurality of groups of investment vehicle information and mortgage information are stored in the service computer. Borrower information is entered in the service computer when a mortgage plan is to be established. An individual one of the groups of investment information is selected. A desired amount of the investment funding is determined for helping repay a mortgage plan. Mortgage implementing information is generated for a given mortgage plan, and is sent to a mortgage lender computer to facilitate the establishment of the mortgage plan.