Systems and methods are presented for payment transaction overrides and system initiated payment splitting. In one embodiment, a first authorization request associated with a first account is monitored at an override computer, an override trigger is identified, and a transaction override approval is received. Override authorization requests are then sent, and responses to the override authorization requests are received at the override computer. A response to the initial authorization request is the sent based on the response received to the override authorization request. In alternative embodiments the override requests are cascaded, or include requests for new account creation.