A system for third party bill payment services used by a payer to pay a biller with whom a payer has an account includes a third party computer system for accessing biller data, the biller data for the payer comprising at least one account identifier, an amount due, and a nominal bill due date; a payment option generator for developing at least one payment option wherein the payment specified is responsive to a difference between a proposed payment date and the nominal bill due date; a payer interface for presenting the at least one payment option to the payer and for accepting a payer option selection and a payment funding confirmation; and a payment execution controller responsive to the payer option selection and funding confirmation, for initiating payment to a biller account on behalf of the payer.