US Patent 9990621 Merchant application programming interface for splitting bills

Split bill payment technology enabled by an application programming interface (API) is disclosed. In some embodiments, API integration between a merchant application or system and a payment application or payment service system enables the merchant application or system to send requests for split bill payments to the payment service system. In response, the payment service system can collect from each bill payer identified in a request, the bill payer's share of a bill and transfer the collected amounts to the merchant.