A member-supported payment system is available to consumers and merchants without sign-up fees, subscription fees, or transaction fees to either consumers or merchants. In a specific implementation, the member payment system is a mobile payment system where consumers may conduct transactions using a mobile device such as a mobile telephone, smartphone, personal digital assistant, or similar portable wireless handheld device. Merchants will make a refundable one-time contribution. These contributions are stored in a pooled trust account by the system and the float dividends or interest on these contributions will fund the system.