Days Payable Outstanding is the average number of days a company takes to pay suppliers: accounts payable divided by cost of sales, times days in the period.
Days Payable Outstanding, usually shortened to DPO, is the average number of days a business takes to settle its supplier invoices. It is a working capital ratio: accounts payable divided by cost of sales, multiplied by the number of days in the period being measured. Read alongside days sales outstanding and days inventory outstanding, it forms the cash conversion cycle.
Every day of DPO is a day of free financing from suppliers. For a company buying two million francs of goods and services a year, one extra day of DPO leaves roughly 5,500 francs of cash in the bank, permanently, for as long as the payment behaviour holds. The risk runs the other way too: stretching payments beyond agreed terms damages supplier relationships, forfeits early payment discounts and can trigger price increases or credit holds that cost more than the financing gained. A rising DPO is therefore only good news when it comes from renegotiated terms rather than from invoices sitting unapproved in someone's inbox.
Business Central has no built in DPO figure. The inputs exist: the payables balance comes from the vendor posting group accounts in the general ledger or from the Aged Accounts Payable report, and cost of sales comes from the income statement, so the ratio is usually built as a financial report (account schedule) or in Power BI on top of the ledger. For behaviour rather than balances, vendor ledger entries carry posting date, document date, due date and the closing date of the applied payment, which lets you compute the actual paid to due gap invoice by invoice. What standard does not give you is the time before posting: an invoice that reached the company on the second and was posted on the twentieth looks identical to one received on the twentieth, unless the document date is captured faithfully at entry.
Take a quarter with cost of sales of 2,700,000 CHF over 90 days, which is 30,000 CHF per day, and an average accounts payable balance of 660,000 CHF. DPO is 660,000 divided by 2,700,000, which is 0.2444, multiplied by 90, giving 22 days. If terms are renegotiated so that the same spend is paid at 30 days, payables would settle at 30 times 30,000, that is 900,000 CHF, and the difference of 240,000 CHF is cash released once and then kept.
The common failure is an unstable definition: cost of sales or total purchases in the denominator, a period end balance or an average balance in the numerator, payables including value added tax against a cost of sales that excludes it. Each choice moves the answer by several days, so the convention has to be written down and frozen before any trend means anything. Teams that manage DPO seriously then split it in two: the contractual part, the weighted average of agreed payment terms, and the execution part, the gap between due date and actual payment date, where approval delays, lost invoices and unmatched receipts show up.
No. Stretching beyond agreed terms costs supplier goodwill and forfeits early payment discounts that are often worth more than the financing gained. A high DPO is healthy only when it reflects terms that were actually negotiated.
It depends entirely on sector and negotiating position; retail and manufacturing typically sit far higher than services. The useful comparison is against your own weighted average payment terms, not against a general benchmark.
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