Days Payable Outstanding Is the Metric Nobody Pairs With DSO
Days Sales Outstanding (DSO) tells you how long customers take to pay you. Days Payable Outstanding (DPO) tells you how long you take to pay your suppliers. Most leadership teams review the first number regularly and glance at the second, if they look at all.
Each number answers half a question. Together they answer a bigger one. Who is financing whom?
In August, I made the case in Days Sales Outstanding Is the Metric Boards Stopped Watching that boards need DSO on the reporting package. This piece is its companion. The metric is different and the discipline is the same.
Days Payable Outstanding Shows Who Is Funding Whom
When DSO runs longer than DPO, you pay suppliers before customers pay you, and your own cash or borrowing covers the stretch. When DPO runs longer, your suppliers carry part of your working capital. Neither position is wrong. Each has a cost.
The two measures use different bases. DSO is measured against sales. The Corporate Finance Institute calculates DPO as average accounts payable divided by cost of goods sold, multiplied by the days in the period, in its guide Days Payable Outstanding. The gap shows direction and rough size, not an exact count of cash days.
Illustrative hypothetical: Company A collects in 55 days and pays suppliers in 30. Company B collects in 40 days and pays in 45. Company A funds 25 days of every sale before cash arrives, while Company B collects 5 days before its suppliers are due.
Inventory belongs in the picture too. The cash conversion cycle adds the days you hold stock to your collection days and subtracts the days you take to pay. McCormick & Company reports it that way. Its annual report on Form 10-K for the fiscal year ended November 30, 2020 defines the cycle as DSO plus days in inventory less DPO. Perry D. Wiggins, chief financial officer of APQC, treats DSO and DPO as a pair in his 2024 CFO.com column Days sales outstanding: A critical lever for managing cash flow: Metric of the Month. He describes tracking and managing the two together as a set of concrete levers for liquidity.
What the Largest Companies Show When the Numbers Sit Together
The Hackett Group, a consulting and executive advisory firm, publishes annual surveys that report both measures for the same companies.
The 2025 European survey, The Hackett Group® 2025 Working Capital Survey: Europe Shows Deterioration in Cash Conversion Cycle as Financial Strain Deepens, covers the 1,000 largest European-headquartered nonfinancial companies. For 2024 it reports DSO of 48.5 days and DPO of 72.6 days. By my arithmetic, that's a payables lead of about 24 days. The cash conversion cycle still worsened 3% to 44.8 days, its third straight year of deterioration, because rising DSO and inventory days outran the payables gains. The Hackett Group ties the higher DPO to buyers' growing bargaining power over terms.
In the United States, payables carried the result too. In The Hackett Group® 2025 Working Capital Survey: Payables Rebound, but Receivables and Inventory Lag, covering the 1,000 largest publicly traded U.S. nonfinancial companies, DPO rebounded to 59 days. That rebound drove most of a 4% improvement in the cash conversion cycle, now 37 days, while DSO and inventory days slipped. The gap between top-quartile and median performers widened most in DPO, where it reached 9%.
The newest edition, A Record $1.94 Trillion Working Capital Opportunity Demands a New Playbook, puts the performance gap among North America's largest companies at a record $1.94 trillion, up 12%, despite stronger revenue and profitability. The Hackett Group describes receivables as deteriorating and payables gains as narrowing.
Deloitte reads 2025 the same way. In Navigating 2025 working capital trends: Priorities for 2026, based on more than 2,300 companies, it reports a cash conversion cycle about 0.9 days shorter, driven by lower inventory days and longer DPO while DSO rose. Deloitte calls the gain uneven and says strategy should be tailored by industry.
One filer shows the mechanism clearly. McCormick & Company's cash conversion cycle fell from 55 days in 2018 to 43 in 2019 and 39 in 2020. In the fiscal 2020 report, management attributed both declines mainly to longer payment terms with suppliers, and to a lesser extent to lower DSO. The company still reports the measure in its annual report on Form 10-K for the fiscal year ended November 30, 2025.
These are the largest listed companies. Mid-market businesses often hold different bargaining power, so read the figures as direction, not as a benchmark.
A Strong Payables Number Can Hide a Weak Collections Number
Every day one company adds to its payables, a supplier adds to its receivables. That's arithmetic. A stretched DPO on your side becomes a longer DSO on your supplier's side.
In its 2018 release Hackett: U.S. Cos Improve Working Capital Performance; Deterioration in Receivables and Inventory Management Masked by Significant Slowing of Payments to Suppliers, The Hackett Group found that for many companies a better DPO meant pushing the burden onto suppliers, including much smaller ones, through forced longer terms. Craig Bailey of The Hackett Group warned of the result. "It can even destabilize a supply base, if companies are not careful."
McKinsey & Company adds two warnings. Its 2014 article Uncovering cash and insights from working capital says stretching supplier terms can leak back as higher prices or signal distress to the market. Its 2025 article Gain transformation momentum early by optimizing working capital says extending terms works less well when capital costs rise, because suppliers must fund the extension themselves. The Corporate Finance Institute adds that a high DPO can bring supplier credit restrictions, while a low one can mean unused credit periods.
The logic runs in reverse on your own receivables. If your DSO has crept up, ask whether customers negotiated longer terms or simply paid late. The first is a commercial decision. The second is a collections problem. A dashboard shows both as the same number.
Working Capital Is an Operating Discipline
Finance can calculate DSO and DPO. Finance doesn't control every decision behind them. Procurement negotiates supplier terms, accounts payable runs payments, sales sets customer terms, and billing decides how fast an accurate invoice goes out.
Matt Stone of McKinsey & Company said it directly in a 2019 podcast, Make working capital work harder for you. "Working capital is not something that just a CEO or CFO can change." The 2025 McKinsey & Company article calls for ownership across the commercial, purchasing, supply chain, and finance teams. The 2014 article reports that the firm routinely sees companies release tens or even hundreds of millions of dollars in cash within 60 to 90 days. That is field experience, not a guarantee.
In many organizations, collections and payments report to different leaders, and no one owns the relationship between them. That's why the pairing goes unreviewed.
Payment Terms Carry Legal Limits That Vary by Jurisdiction
Payment term rules differ around the world, so know which ones govern your contracts. In the European Union, Directive 2011/7/EU of the European Parliament and of the Council of 16 February 2011 on combating late payment in commercial transactions (recast) sets the baseline. Article 3(5) requires member states to ensure that a contractual payment period between businesses doesn't exceed 60 calendar days, unless the contract expressly says otherwise and the longer period isn't grossly unfair to the creditor.
Creditors who have met their own obligations and are paid late are entitled to statutory interest of at least 8 percentage points above the reference rate, plus a fixed minimum of €40 for recovery costs. Member states write these rules into national law, and some favor creditors even more.
How to Read the Gap Without Fooling Yourself
Put both numbers on one page, for the same period, with the gap and its trend. Dana Johnson, who teaches at Michigan Technological University, recommends reviewing average collection days and average payment days every month, as CFO Dive reported in Getting your working capital ratio right. A single month tells you little. Several quarters show whether the gap is widening because customers pay slower, suppliers wait longer, or both. For a board package, show DSO and DPO side by side for the current period, the prior period, and a target, then ask why any meaningful movement happened.
Separate terms from behavior. A longer DPO from renegotiated contracts is a policy choice. One from invoices paid late is a risk you haven't priced. The same split applies to DSO, and an average hides which one you're looking at.
Three more questions sharpen the read:
Do your customer terms match your supplier terms? If sales grants concessions your supply base can't support, you're financing the difference.
What does an early-payment discount cost you? The 2025 McKinsey & Company article notes that a 0.5% discount for paying 30 days earlier is a different decision at a 5% cost of capital than at 10%.
Where does the movement come from? A few large customers and suppliers can drive most of it, so a segment view beats the company-wide figure.
Then test the gap against a shock. What happens to cash if your largest customers add 10 days to their payment and your largest suppliers pull back 10?
No target for the gap fits every business. A distributor and a software company carry very different cycles, and local law and custom shape what's workable. Pairing days payable outstanding with DSO forces a choice. How much of your liquidity do you earn from customers, and how much do you borrow from the people who supply you? The answer should be one you made on purpose.
When Cash and Supplier Terms Pull in Opposite Directions
At Aspirations Consulting Group, we work with executives and other leaders facing growth, transition, or performance pressure, where finance, operations, and people decisions overlap. See how ACG supports leaders at these moments.
Metrics Worth Reading Together
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~ Jerry Justice
Living to Serve, Serving to Lead™
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