Managing accounts payable in-house can be complex, time-consuming, and resource-intensive — especially as businesses scale. Accounts payable (AP) outsourcing offers a strategic solution by shifting these tasks to specialized third-party providers. From invoice processing and payment scheduling to compliance and reporting, outsourcing can help reduce costs, improve accuracy, and free up internal teams to focus on core business functions. In this complete guide, we cover everything you need to know about AP outsourcing — including how it works, its benefits, potential risks, and tips for choosing the right outsourcing partner.