Systems and methods for facilitating multi-party payment transactions

A computer-implemented method for facilitating a payment transaction wherein a cardholder purchases an item from a merchant on behalf of a buyer is provided. The method includes receiving proposal data from a buyer computing device, wherein the proposal data includes at least one of an identification of an item proposed for purchase, a particular merchant, and a merchant purchase price. The method also includes receiving a selection message from the buyer computing device, wherein the selection message indicates a selected cardholder chosen to purchase the item on behalf of a buyer using a merchant payment card associated with the particular merchant. The method also includes reserving, by the computing device, at least the merchant purchase price and a cardholder processing fee associated with the merchant payment card in a buyer account. The method also includes transferring funds from the buyer account to a selected cardholder account, the funds determined at least in part by the merchant purchase price and the cardholder processing fee.