Managing accounts payable, as distinct from doing it, is largely about looking at three numbers regularly enough to notice a change. Teams that do this catch problems while they are small; teams that do not discover them when a supplier telephones or when a month end will not close. None of the three requires special tooling, and all three take a few minutes to produce.
The queue by state
How many invoices are received, matched, in exception, awaiting approval and approved but unpaid. The shape of that distribution tells you where work is accumulating this week. A growing exception count means something upstream has changed; a growing approval queue usually means a specific person is unavailable, and both are fixable while they are small.
The age of the oldest item in each state
Averages hide the problem. The oldest item is where the reputational and financial damage is, and it is usually a single identifiable situation rather than a systemic failure. Chasing three specific old items each week is more effective and considerably less irritating than sending everybody a weekly list of everything outstanding.
The share that matched cleanly
How many invoices cleared the match without a person, as a share of those that had an order and a receipt behind them. This is the health of the upstream process, and a fall in it points at purchasing behaviour, a new supplier, or a tolerance that needs revisiting. It is the earliest warning signal payables has.
Questions people ask about accounts payable management
What is the single most useful metric?
The age of the oldest item awaiting approval. It correlates with almost every complaint payables receives and it is usually caused by something specific and fixable.
Should we report days payable outstanding?
It is useful to finance as a cash measure and it is a poor operational metric, because it mixes deliberate payment policy with process failure.
How often should we review exception reasons?
Monthly is enough. The distribution of reasons tells you which upstream problem is generating the most work, and it is usually a surprise the first time.