Abstract: Systems and computer-implemented methods are provided to determine recurring loan payments for a financing plan. The system is configured to determine a predetermined interest rate based on a comparison of the expected profits to configurable threshold profit levels; and compute a value for the recurring loan payments based on the initial loan amount, the predetermined interest rate and the predetermined term and frequency of payments. A new interest rate may be computed in response to receiving an interest rate buy down activation from a user device, wherein a portion of the expected profits is applied to buy down the interest. Comparative financing plans are generated including and excluding the sale of products wherein loan parameters and interest rates are adjusted so that the loan payments for a first financing plan are the same as or within a configurable range of the loan payments for a second financing plan.