What is A/P or Accounts Payable Aging?

A periodic report that categorizes a company’s accounts payable according to the length of time an unpaid invoice has been outstanding. Similar to accounts receivable aging, it is a critical management tool as well as an analytic tool that helps determine the financial health of a company by its ability to pay its bills on time. Credit memos and partially paid invoices will also be listed on the A/P Aging.