Account payable turnover is a financial metric that measures how quickly a business pays off its suppliers. It shows how efficiently a company manages its accounts payable, which contributes to its cash flow. To calculate the account payable turnover formula, first sum up the total value of all the payments made to suppliers over a given period, and then divide that number by the average amount owed to suppliers during that same time frame. This will provide an indication as to how often a company pays its bills and can help businesses plan their cash flow accordingly.