| 摘要 |
A computerized financial instrument management system has a data storage device storing data indicative of an account balance based on deposits, withdrawals and changes in value of investments selected by an owner, a payment base value, a guarantee of availability of benefit payments for a term, during time periods during the term, without reduction of the payment base value; and withdrawal factor values correlated with dates after a first of the benefit payments and increasing after the first of the benefit payments. A processor is configured to determine, for any of the time periods, an available amount of the benefit payment, based on data indicative of a withdrawal factor value and at least one of a payment base value and either the payment base value or the account value. |
