A method and system for generating bill payment schedule utilizes a composite pricing module to generate payment schedule over a predetermined period of time. In one aspect, a fraction of each pricing model attributing to the composite pricing model is determined. A charge fee associated with said each pricing model based on said fraction and said total price to charge is determined. Price to charge during each time unit of the time period is allocated, based on budget over the time period, discount rate, target profit margin and risk affordance. Bill schedule is generated using the allocated price.