Abstract: A point of sale system includes a payment module having a plurality of payment modes, and a discount module configured to determine a discount associated with each of the plurality of payment modes. The point of sale system includes a processor configured to receive a request for processing the payment for the purchase order, and generate at least one first invoice receipt for the purchase order. The at least one first invoice receipt includes an indication of the discount available corresponding to each of the plurality of payment modes. The processor is also configured to process the payment of the purchase order using a desired payment mode of a customer and generate at least one final invoice receipt indicating the desired payment mode and the discount associated with the desired payment mode.