Late payments tie up 15 billion euros in French SMEs each year. Monitoring of outstanding amounts, DSO, automatic reminders: three concrete levers to collect more quickly.
Monitoring customer outstandings allows an SME to identify unpaid invoices, trigger automatic reminders and reduce its DSO, or the average time to collect receivables. According to the 2024 report from the Banque de France’s Payment Deadlines Observatory, delays tie up 15 billion euros of cash flow in French SMEs each year.
Payment delays in France: a direct cost on the cash flow of SMEs
The annual report of the Payment Deadlines Observatory of the Banque de France covers data until 2024: it is the most recent statistical reference available on the subject. And the figures are not reassuring. In 2024, inter-company payment delays will return above the European average, with an average delay of 13.6 days in the fourth quarter. Without these delays, SMEs would have benefited from 15 billion euros in additional cash flow.
The legal framework is however strict. According to article L.441-10 of the Commercial Code, resulting from the LME law of August 4, 2008, inter-company payment terms are capped at 60 days from the invoice date, or 45 days end of month if provided for in the contract. Failure to comply with this ceiling is punishable by an administrative fine of up to 2 million euros for a legal entity, according to economie.gouv.fr. Despite this framework, more than 9% of French companies record delays exceeding 30 days, according to Altares data.
Customer outstandings and DSO: definition and calculation for an SME
Customer outstanding corresponds to all the money that your customers owe you at a given time: invoices issued, services delivered, but not yet paid. The higher this outstanding amount, the more reduced the available cash flow, even when business is doing well.
The DSO (Days Sales Outstanding), or average customer payment time, measures the number of days of turnover tied up in customer accounts. The formula: customer receivables including tax divided by turnover including tax, multiplied by the number of days in the period. According to the first edition of the Agicap Data Pulse, a study based on transactional data from more than 8,000 companies published in early 2026, the DSO of French SMEs reached on average 65 days over the whole of 2025, i.e. beyond the legal ceiling of 60 days.
Be careful, however, to distinguish two very different realities in this figure. The contractual DSO reflects the deadlines negotiated with your customers: it is only reduced by commercial renegotiation. The DSO suffered corresponds to the actual delays in relation to the agreed deadlines: it is this which is directly actionable, in particular through a structured recovery policy.
DSO, WCR and cash flow: the causal chain to understand
A high DSO (average customer invoice collection time) does not mean that your customers will not pay: it means that the money is there, but not yet available. This gap between invoicing and collection mechanically fuels the working capital requirement (WCR). The longer the DSO, the more the WCR increases, and the more the company must mobilize resources to finance its operating cycle without being able to rely on its collections.
Reducing your DSO, that is to say shortening the average time between the issue of an invoice and its collection, has a directly calculable impact on cash flow. Five days saved on an annual turnover of 2 million euros frees around 27,000 euros of immediately available cash. On an active customer portfolio, it is an internal financing lever, without recourse to a bank overdraft or factoring.
Monitoring your customer outstandings in real time, invoice by invoice and customer by customer, allows you to anticipate cash flow tensions before they materialize. An SME that identifies unpaid invoices from the first day of delay can trigger an immediate reminder, whereas a manual process often only detects the problem at the end of the month, when the overdraft is already there.
Accounting software and monitoring of outstandings: what the market offers
Among the accounting software integrating monitoring of customer outstandings and automated reminders, we find solutions like Pennylane or Tiime, as well as Sage 50. Sage 50 is accounting and commercial management software published by the Sage group, listed on the FTSE 100, whose solutions are deployed in more than 20 countries. It natively integrates a dashboard for monitoring customer outstandings which displays in real time the status of accounts receivable by customer, by due date and by age of delay.
With Sage 50, reminders can be configured in stages: first reminder on D+5, second on D+15, third on D+30, with distinct content and channel at each stage. Sage 50 also allows you to define an authorized outstanding amount per customer and trigger an automatic alert as soon as this threshold is exceeded, which makes it possible to anticipate the risk of non-payment before it transforms into bad debt.
Sage 50 integrates Sage Network, its approved platform definitively registered by the DGFiP on December 22, 2025, according to the official list published on impots.gouv.fr. For SMEs that already use Sage 50 for their accounting, monitoring of outstandings and compliance with the electronic invoicing reform of September 1, 2026 are covered from a single environment, without migration to a separate tool.
Automatic reminders and outstanding alerts: how does it work in practice?
A manual reminder requires an accountant to identify overdue invoices, write a message, send it and follow up. In an SME dealing with several dozen active customers, this process takes up several hours per month and generates oversights. Automation replaces this sequence with rules configured once, triggered without human intervention as soon as a deadline is passed. Setting up an automatic restart is based on three variables:
- The length of the delay : the levels are defined in advance, for example D+5 for a first notification, D+15 for a formal reminder and D+30 for a formal notice. Each level automatically triggers the correct message, without human intervention.
- The priority level of the customer : a large strategic account does not receive the same treatment as a new client with no history. The configuration allows you to adapt the tone and frequency of reminders according to the debtor’s commercial profile.
- The channel used : e-mail for initial reminders, registered mail for advanced levels, scheduled telephone call for sensitive files. Each channel corresponds to a distinct level of escalation in the recovery process.
| Landing | Deadline | Channel | Your | Objective |
| 1 |
D+5 |
|
Neutral, informative |
Simple reminder, verification of receipt |
| 2 |
D+15 |
Email + call |
Firm, courteous |
Obtain a payment commitment |
| 3 |
D+30 |
Registered mail |
Formal |
Formal notice, legal basis established |
The authorized outstanding alert works differently: it does not react to a delay but to a threshold. Each customer is assigned a maximum outstanding amount, i.e. the total amount of unpaid invoices that the company agrees to have in circulation simultaneously with this customer. As soon as this threshold is crossed, an alert is automatically triggered, which makes it possible to block a new order or initiate a commercial discussion before the risk worsens.
Electronic invoice and collection: why does the 2026 reform accelerate the DSO?
Electronic invoicing reform is often presented as a compliance constraint. It is also, mechanically, a lever for reducing the DSO (average time for collection of customer invoices). An electronic invoice transmitted via an approved platform is received instantly by the customer, without postal delay or risk of loss. The starting point of the payment deadline is therefore clearly established, which reduces the margins of interpretation on the due date.
Traceability of invoice status is the second advantage. With a paper invoice or a PDF sent by email, the issuer does not know if the document has been received, nor at what stage of validation it is with the customer. With an electronic invoice transmitted via an approved platform, each step is time-stamped: issue, reception, collection, payment. This real-time monitoring makes it possible to trigger a follow-up from the first day of delay, without waiting for feedback from the customer.
Format errors constitute the third obstacle eliminated. According to economie.gouv.fr, a significant proportion of inter-company payment delays result from invoices rejected for non-compliance, missing information or a format that cannot be processed by the client’s system. Electronic invoicing structured in Factur-X, UBL or CII eliminates these rejections upstream, which mechanically reduces processing times and therefore the DSO incurred.
FAQ: monitoring of outstanding amounts and payment deadlines, your frequently asked questions
How to calculate your DSO when you don’t have dedicated accounting software?
The basic formula is accessible from a spreadsheet: customer receivables including tax divided by turnover including tax, multiplied by the number of days in the period. The exercise takes a few minutes using data from the customer ledger and the income statement. The limit is frequency: without automation, this calculation is rarely done more than once per quarter.
What is the difference between an authorized outstanding amount and a customer credit limit?
The two concepts are close but distinct. The credit limit is a commercial threshold set upstream, before any order. The authorized outstanding amount is an accounting threshold, calculated on invoices already issued and not yet paid. The first manages the commercial relationship, the second manages the cash flow risk.
Do automatic reminders damage the commercial relationship?
Not if they are well configured. A neutral tone on the first levels and gradual escalation allow you to maintain a professional relationship. Most delays are the result of oversights or slow internal customer processes, not bad will. A quick reminder is often seen as a signal of rigor, not aggressiveness.
From how many active customers does the automation of reminders become profitable?
The threshold generally observed is around twenty active customers with regular deadlines. Below that, manual tracking remains manageable. Beyond that, the time spent on reminders quickly exceeds two to three hours per month, a volume which economically justifies an automated tool, even for a very small structure.
Does mandatory electronic invoicing from September 1, 2026 also apply to reminders?
No. The reform regulates the issuance and receipt of invoices, not the recovery processes. On the other hand, the traceability provided by electronic invoicing, in particular the timestamp of receipt, strengthens the legal basis for a reminder in the event of a dispute over the due date.
Can outstanding tracking software connect to multiple bank accounts simultaneously?
Yes, solutions integrating an automatic bank link generally allow several accounts to be connected simultaneously, including in different banks. Transactions are imported in real time and automatically reconciled with accounting entries, which provides a consolidated view of cash flow without manual re-entry.
Sources
- Banque de France — Annual report of the Payment Deadlines Observatory 2024, published on July 10, 2025
- Agicap Data Pulse — first edition, transactional data from more than 8,000 companies, published in early 2026
- economie.gouv.fr — Payment deadlines: the rules to know
- Economic Modernization Law (LME) of August 4, 2008 — article L.441-10 of the Commercial Code
- impots.gouv.fr — Official list of approved platforms, consulted in May 2026
- Finance Law 2026 — LAW no. 2026-103 of February 19, 2026
- Altares — Payment terms barometer, fourth quarter 2024
