Who are especially interested in the average payment period, since it provides them a sense of the bill-paying patterns of the company?

Lenders and suppliers

Trade payables turnover ratio indicates the pattern of payment of trade payable. As trade payable arise on account of credit purchases, it expresses relationship between credit purchases and trade payable.
Average Payment Period = No. of days/month in a year Trade Payables Turnover Ratio.
It reveals average payment period. Lower ratio means credit allowed by the supplier is for a long period or it may reflect delayed payment to suppliers which is not a very good policy as it may affect the reputation of the business. The average period of payment can be worked out by days/ months in a year by the Trade Payable Turnover Ratio.