Every extra day of DSO is cash tied up in uncollected invoices — working capital that shouldn’t exist. Here’s how a CFO or mid-market leader takes concrete action on this metric.
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At the end of 2024, the average payment delay observed in France reached 13.6 days, up one day year-on-year and above the European average — climbing to 18 days at companies with more than 1,000 employees (by comparison, more than two-thirds of SMEs pay their suppliers within 60 days, versus barely one in two large groups). This persistent delay costs French SMEs and micro-businesses €15 billion in tied-up cash, according to the Banque de France’s 2024 annual report on payment terms (Observatoire des délais de paiement).
The Altares study on payment terms in France and Europe (first half of 2025) confirms and sharpens this picture: the average delay reaches 14.1 days, with France exceeding the European average for the first time. Only 45.2% of companies pay suppliers on time, and 9% of delays exceed one month. The delay grows markedly with company size:
This isn’t just an abstract cash-flow issue. A Banque de France study (Bulletin No. 227, Gonzalez & Dietsch) found that a payment delay increases the affected company’s probability of failure by 25% — rising to 40% when the delay exceeds one month. Among companies that go bankrupt, 8 out of 100 are potentially exposed to this risk, three-quarters of them due to delays exceeding 30 days. A drifting DSO isn’t just a reporting metric: it’s a measured risk factor.
On the companies’ own side, the 23rd annual AFDCC survey (1,000 companies surveyed, November 2025 to February 2026) finds that 75% of companies report an increase in payment delays over the year (versus 61% a year earlier), and 45% report a year-on-year increase in their own DSO — versus only 20% reporting a decrease — a sign the issue doesn’t resolve itself without structured action.
DSO (Days Sales Outstanding) measures the average time between issuing an invoice and actually collecting payment. It’s typically calculated as: (accounts receivable / revenue including tax) × number of days in the period. Aged receivables break down your outstanding balances by age (0-30 days, 30-60 days, 60+ days). Both metrics tell the same story from two angles: how much cash is stuck in receivables, and for how long.
A high DSO is almost never an isolated problem — it’s the visible symptom of three recurring causes: invoices issued late or containing errors, follow-ups that start too late (often only after the due date, never before), and accounts handled by amount rather than by age, which lets small, old receivables pile up.
There’s no universal reference DSO — the Altares breakdown by company size above gives a first benchmark, but what matters most is the gap between your actual DSO and your contractual payment terms: a gap of several days signals a follow-up or invoicing quality issue, not just a market norm.
Three actions have the fastest and most lasting impact on DSO, in the order they should be put in place:
A dedicated account manager applies these three levers continuously, without mobilizing your internal teams: systematic deadline monitoring, preventive reminders before the due date, then a progressive, measured escalation (amicable, and legal if necessary) for accounts that don’t resolve.
The approach stays the same from the first unpaid euro to the last legal resort: firm on the legal framework, never threatening in tone. That consistency is what reduces DSO without damaging the business relationship you’ve built with your clients.
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A method applied continuously, not a one-off audit — results hold over time.
5 to 10 days
of payment delay saved
Our targeted, automated follow-ups significantly reduce the average payment delay, and therefore DSO.
30 to 50%
reduction in aged receivables
A rapid decrease in 30-day outstanding balances, strengthening your cash flow and financial visibility.
+70%
average recovery rate
Regardless of invoice age, our personalized approach recovers the majority of receivables, even the oldest ones.
Averages observed across our active client portfolio; results vary by industry, receivable age, and debtor profile.
DSO measures the average number of days between invoicing and actual cash collection. It is typically calculated as: (accounts receivable / revenue including tax) × number of days in the period. The higher it is, the more cash is tied up in unpaid invoices.
There is no universal benchmark: reference DSO depends on your sector and contractual payment terms. What matters is the gap between your actual DSO and your theoretical payment terms — a large gap signals a collection or invoicing quality issue, not just a commercial choice.
Three levers have the most short-term impact: making invoicing reliable (zero errors, zero delays in issuing invoices), following up before the due date rather than after, and processing overdue accounts by age rather than by amount. An outsourced agency applies these three levers continuously, without mobilizing your internal teams.
French law sets a maximum period of 60 days from the invoice date, or 45 days end of month if contractually agreed (Article L441-10 of the French Commercial Code). Non-compliance exposes the client company to penalties and entitles you to late payment interest.
From the first day of delay, you can apply late payment penalties (ECB rate + 10 points) and a fixed compensation of €40 for collection costs. These terms must be stated explicitly on the invoice to be enforceable.
The statute of limitations for a commercial debt in France is 5 years from the due date. After this period, you lose the right to recover it through legal proceedings — one more reason not to let aged receivables pile up.
No. DSO is reduced first through rigor (clean invoicing, systematic and early follow-up), not through pressure. A firm follow-up on substance can remain courteous in tone — that combination is what preserves the business relationship while improving the metric.
No lengthy audit, no long-term commitment: a first conversation is enough to identify where your DSO is getting stuck and which levers will have the most impact on your cash flow.
We identify together where the main bottleneck lies — invoicing, follow-up, or handling of old accounts.
Your dedicated account manager integrates into your existing organization, without overhauling your tools.
Firm on the legal framework, tactful in tone — DSO goes down without your clients feeling the pressure.