System, method, and computer program for funding a payment card account from an external source just-in-time for a purchase

A system comprising:

• at least one processor;
• and
• a non-transitory computer readable storage medium comprising instructions that, when executed by the at least one processor, cause the system to:
• parse, by one or more computing devices of a payment card processing system maintaining a payment card account, a transaction authorization request to determine a transaction amount and a response time deadline, the transaction authorization request routed from one or more computing devices of a payment network to the one or more computing devices of the payment card processing system;
• generate, by the one or more computing devices of the payment card processing system, a funding request to authorize an electronic payment transaction with an additional response time deadline less than the response time deadline of the transaction authorization request, the additional response time deadline comprising a sub-time period of the response time deadline for receiving a response to the funding request;
• send, by the one or more computing devices of the payment card processing system to one or more computing devices of an external gateway that is separate from the payment card processing system and external to the payment network in response to the transaction authorization request, the funding request to authorize and fund an electronic payment transaction for the transaction amount according to the response time deadline via one or more computing devices of the external gateway based on the payment card account comprising a funding source external to the payment card processing system and serviced by the one or more computing devices of the external gateway;
• receive, by the one or more computing devices of the payment card processing system and from the one or more computing devices of the external gateway, an approval message comprising authorization of the funding request within the additional response time deadline;
• modify, by the one or more computing devices of the payment card processing system, a balance of the payment card account by the transaction amount in real-time in response to receiving the approval message from the one or more computing devices of the external gateway, wherein modifying the balance comprises:
• increasing the balance of the payment card account by the transaction amount within the response time deadline;
• generating a response indicating the authorization of the funding request in response to increasing the balance of the payment card account by the transaction amount;
• and
• reducing, in response to generating the response indicating the authorization of the funding request, the balance of the payment card account by the transaction amount within the response time deadline in connection with the response indicating the authorization of the funding request, wherein the payment card processing system does not control funds for the transaction amount;
• and
• send, by the one or more computing devices of the payment card processing system to the one or more computing devices of the payment network, the response indicating the authorization of the funding request by the one or more computing devices of the external gateway prior to the response time deadline.

A non-transitory computer readable storage medium comprising instructions that, when executed by at least one processor, cause a computing device to:

• parse, by one or more computing devices of a payment card processing system maintaining a payment card account, a transaction authorization request to determine a transaction amount and a response time deadline, the transaction authorization request routed from one or more computing devices of a payment network to the one or more computing devices of the payment card processing system;
• generate, by the one or more computing devices of the payment card processing system, a funding request to authorize an electronic payment transaction with an additional response time deadline less than the response time deadline of the transaction authorization request, the additional response time deadline comprising a sub-time period of the response time deadline for receiving a response to the funding request;
• send, by the one or more computing devices of the payment card processing system to one or more computing devices of an external gateway that is separate from the payment card processing system and external to the payment network in response to the transaction authorization request, the funding request to authorize and fund an electronic payment transaction for the transaction amount according to the response time deadline via the one or more computing devices of the external gateway based on the payment card account comprising a funding source external to the payment card processing system and serviced by the one or more computing devices of the external gateway;
• receive, by the one or more computing devices of the payment card processing system and from the one or more computing devices of the external gateway, an approval message comprising authorization of the funding request within the additional response time deadline;
• modify, by the one or more computing devices of the payment card processing system, a balance of the payment card account by the transaction amount in real-time in response to receiving the approval message from the one or more computing devices of the external gateway, wherein modifying the balance comprises:
• increasing the balance of the payment card account by the transaction amount within the response time deadline;
• generating a response indicating the authorization of the funding request in response to increasing the balance of the payment card account by the transaction amount;
• and
• reducing, in response to generating the response indicating the authorization of the funding request, the balance of the payment card account by the transaction amount within the response time deadline in connection with the response indicating the authorization of the funding request, wherein the payment card processing system does not control funds for the transaction amount;
• and
• send, by the one or more computing devices of the payment card processing system to one or more computing devices of the payment network, the response indicating the authorization of the funding request by the one or more computing devices of the external gateway prior to the response time deadline.