Accounts Payable Key Performance Indicators (KPIs) are the leading indicators that a company uses to measure the success of its Accounts Payable processes. While many companies use KPIs in different ways (and often interchangeably), there are some standard measurements and calculations that most businesses use to determine their KPIs. These measurements can be used over time to identify trends and promote continuous improvement to streamline the Accounts Payable process and increase overall efficiency.