Abstract: The purchasing system with a rebate feature is utilized by subscriber-purchasers, vendors providing goods and services, a future benefit guarantor such as an insurance company selling annuity contracts and in some cases an escrow agent. The purchasing system allows for the input of purchase orders from the subscriber-purchasers for selected goods and services and correlates the transfer of funds from those purchaser-subscribers to the various vendors selling the selected goods. In one instance, the transfer occurs between the subscriber-purchasers and the escrow agent. The future benefit guarantor supplies a rebate factor which is input into the system. The system then computes and reports a rebate which is due in the future to each subscriber-purchaser from the future benefit guarantor. The rebate is based upon cost of the individually selected goods and services and the rebate factor.