Abstract: A method for optimizing a rate of return based on a bank's capital and loan products, comprises the creation of a plurality of arrays, comprising a passiva product array, an activa product array, a distribution array and a result array. Each passiva product array signifies a plurality of passiva products having a monetary value and an interest rate associated with it. Each activa product array signifies a plurality of activa products having a monetary value and an interest rate associated with it. The method further assigns to each activa product a plurality of eligible passiva products from the passiva product array, and a pre-determined maximum percentage of the activa product which may be financed by each of the eligible passiva products. For each activa product, enter on the distribution array, a single entry for each eligible passiva product.