Unpaid invoices are a major financial risk for businesses worldwide. In France alone, late payments and non-payments account for tens of billions of euros in annual losses. According to the Banque de France, payment delays are one of the leading causes of business failure: 25% of bankruptcies are directly linked to unpaid or persistently delayed invoices. For SMEs with limited cash reserves, a single unrecovered receivable can destabilize the entire financial structure.
Debt collection is therefore far more than an administrative formality. It is a strategic process that, when properly managed, can transform a business’s financial health. From preventive follow-up before the due date to judicial proceedings in cases of persistent dispute, debt collection encompasses a set of practices, tools and legal rules that every business owner should understand.
This complete guide walks you through the full debt collection process: the legal foundations, the successive stages, the tools available, the legal procedures and the best practices for maximizing your chances of recovering unpaid invoices.
Note on legal procedures: The judicial procedures described in this guide apply specifically to French law. The principles of amicable collection — reminders, escalation, negotiation — are universal and apply in most business contexts regardless of jurisdiction.
Table of contents
- What is debt collection?
- The 3 stages of debt collection
- Tools for amicable collection
- Judicial procedures (French law)
- The legal framework in France
- Debt collection software
- Debt collection agencies
What is debt collection?
Legal definition
Debt collection refers to all actions undertaken by a creditor — the person or company to whom money is owed — to obtain actual payment of that sum from their debtor.
In French law, the general framework for collection is established by article L111-1 of the Code of Civil Enforcement Procedures, which provides that “any creditor may, under the conditions provided by law, compel their defaulting debtor to fulfil their obligations.” This text establishes the creditor’s right to resort to enforcement measures when amicable attempts have failed.
Debt collection is distinct from commercial litigation: it is not about challenging the validity of a debt, but about obtaining actual payment. The debt is established — the invoice has been issued, the service has been rendered, the product has been delivered — and the debtor is not paying within the agreed timeframe.
Types of receivables
Not all receivables are alike, and collection approaches vary depending on their nature:
Commercial receivables (B2B) arise from transactions between businesses — a product sale, a service contract, a subcontracting agreement. These represent the majority of collection cases in business and are governed by commercial law.
Civil receivables arise from relationships between individuals or between a professional and a consumer. Different rules apply compared to commercial law, including different limitation periods and the absence of automatic flat-rate compensation.
Unsecured receivables (chirographaires) are ordinary debts with no specific security. In insolvency proceedings, unsecured creditors are repaid last.
Secured receivables (mortgaged or otherwise guaranteed) give the creditor priority rights over specific assets in case of default.
In the day-to-day context of business collections, it is primarily commercial B2B receivables that are at stake.
Who is affected?
Any business that issues invoices can face collection challenges. The statistics are stark:
- 60% of French SMEs report experiencing regular payment delays
- On average, businesses wait 13.9 days beyond contractual terms to be paid
- 1 in 4 businesses experiences at least one completely unpaid invoice per year
- Intercompany credit in France represents outstanding amounts exceeding €600 billion
The most exposed sectors include construction, distribution, business services, transport and industrial subcontracting. But no sector is immune: professional services firms, consultants and service providers are regularly confronted with clients who pay late or not at all.
The 3 stages of debt collection
Debt collection is structured in three main phases, successive and complementary. Each stage represents an increasing level of escalation, from upstream prevention to judicial compulsion.
Preventive collection
The best collection is one that never needs to happen. Preventing unpaid invoices starts well before the invoice is issued, during the commercial phase. The goal is to identify potential risks and take contractual measures to protect yourself.
Solvency assessment is the first preventive measure. Before extending commercial credit to a new client, it is prudent to verify their financial health: checking the trade register, analyzing published financial statements, using credit scoring services.
General terms and conditions of sale (T&Cs) are another major preventive tool. Well-drafted T&Cs specify payment deadlines, late payment penalty calculation methods, retention of title conditions and applicable jurisdictions in case of dispute.
Deposits and staged payments reduce non-payment risk by limiting client exposure. Requesting a 30–50% deposit at order placement is common practice in many sectors.
Preventive follow-up means sending a friendly reminder a few days before the invoice due date. This often-overlooked practice helps detect payment difficulties early and resolve any issues (invoice not received, service dispute) before the situation deteriorates.
For more on these practices, see our guide on preventive debt collection.
Amicable collection
As soon as an invoice is overdue, amicable collection begins. This covers all actions taken without court intervention: email reminders, postal letters, phone calls, SMS messages and, as a last resort, a formal demand letter.
Amicable collection is by far the most effective path: statistically, 85 to 95% of overdue receivables are recovered at this stage, without requiring legal proceedings. It is also the least costly approach — for both you and your client — and the one that best preserves the commercial relationship.
The key to successful amicable collection lies in regularity, personalization and escalation: consistent follow-ups, adapted to the debtor’s profile, with a progressive increase in tone and formality.
For a detailed presentation of amicable collection techniques, see our guide on amicable debt collection.
Judicial collection
If amicable collection fails after several weeks or months of unsuccessful follow-up, judicial proceedings become necessary. Judicial collection uses the courts to compel the debtor to pay.
The main judicial procedures available in France are:
- The payment order (injonction de payer): a fast and low-cost procedure for undisputed debts
- The interim payment order (référé-provision): to obtain urgent partial payment when the debt is not seriously contestable
- The full court action (assignation en paiement): for complex or heavily disputed claims
These procedures are detailed in the following section.
Tools for amicable collection
Amicable collection has a range of complementary tools at its disposal. Each has its strengths and use cases. An effective collection strategy combines them intelligently.
Email reminders
Email is the most widely used collection channel in B2B. Its advantages are clear: near-zero cost, full traceability, easy personalization and rapid response times. A well-written reminder email states the essential information (invoice reference, amount, days overdue) and proposes a clear action (pay online, contact accounts).
The challenge lies in the writing: too cold a tone risks antagonizing the debtor, too lenient a tone risks not being taken seriously. Personalization — using the contact’s name, referencing the commercial relationship — significantly improves response rates.
Our email templates for following up on unpaid invoices will help you craft effective reminder emails.
Letter reminders
Postal letters retain a symbolic and legal weight that email lacks. A registered letter with acknowledgment of receipt creates legal proof of notification to the debtor. For formal follow-ups — before a demand letter or as a precursor to legal proceedings — registered post is often preferable.
Postal reminders are also harder to psychologically ignore than emails. They are perceived as an escalation signal by the debtor, which can accelerate payment.
Our reminder letter templates for unpaid invoices cover the full range of postal follow-up formats.
SMS reminders
SMS is an underutilized channel in B2B collections, yet remarkably effective. Open rates exceed 95% and messages are read within minutes. For short, factual reminders — imminent due date alert, first overdue reminder — SMS proves very effective.
It should be used sparingly: too frequent or poorly worded collection SMS messages can be perceived as harassment and damage the commercial relationship.
Phone reminders
The phone is the most direct and most effective channel for unblocking complex situations. A call enables dialogue, helps understand the reasons for the delay, opens the door to negotiating a payment schedule if necessary and obtains a payment commitment. The chances of resolving the situation are significantly higher after a call than after a simple email.
The drawback is the time required. For large numbers of receivables or low-value invoices, systematic phone follow-up is not scalable. It is reserved for significant debts or situations blocked despite multiple written reminders.
Formal demand letter
The formal demand letter (mise en demeure) is the final step of amicable collection and the indispensable precursor to any legal proceedings. It is a formal letter — typically sent by registered mail with acknowledgment of receipt — officially notifying the debtor that they must pay within a specified deadline (generally 8 to 15 days) or face legal action.
A demand letter has several important legal effects:
- It interrupts the prescription period of the debt
- It officially puts the debtor in default, triggering the running of interest
- It serves as evidence that you attempted amicable resolution before resorting to the courts
In many cases, a demand letter alone is enough to trigger payment, as it sends a clear signal that you are prepared to pursue legal action.
Our demand letter templates for outstanding payments cover all the standard formats.
Judicial procedures (French law)
When amicable collection has failed despite multiple reminders and an unanswered demand letter, judicial proceedings become necessary. In France, several procedures are available depending on the nature and amount of the claim.
The payment order (injonction de payer)
The payment order is the simplest, fastest and least expensive judicial procedure for recovering an undisputed debt. It is governed by articles 1405 et seq. of the French Code of Civil Procedure.
How it works
You file a petition with the competent court (civil or commercial court depending on the nature of the debt), with supporting evidence of the claim (invoices, purchase orders, contracts). The judge reviews the petition without a hearing: if the claim appears well-founded, they issue an order for payment.
This order is notified to the debtor, who has one month to file an objection. If no objection is filed within this period, the order becomes final and can be served by a bailiff — it then constitutes an enforceable title enabling enforcement measures (wage garnishment, bank account seizure, asset seizure).
Advantages of the payment order
- Very low cost: fees amount to €33.47 (judicial act tax) plus bailiff fees for service (approximately €60–€100)
- Fast procedure: 1 to 3 months from filing the petition to obtaining an enforceable title
- No mandatory legal representation for smaller amounts
- Effective: simply receiving the payment order often prompts the debtor to pay immediately
Limitations
- Only applicable to debts that are certain, liquid and due: the debt must be uncontestable in both its principle and amount
- If the debtor files an objection, proceedings revert to an ordinary adversarial procedure — longer and more expensive
- Not suitable for contested claims or complex disputes
For a detailed walkthrough, see our guide on the payment order procedure in France.
The interim payment order (référé-provision)
The interim payment order is an emergency procedure to obtain rapid payment of a sum when the obligation is not seriously contestable. It is provided for in article 809 of the French Code of Civil Procedure.
Unlike the payment order, the référé-provision involves an adversarial hearing: both parties are summoned before a judge who rules within a few weeks.
The judge can order the debtor to pay a provisional sum pending a substantive decision, or rule on the full debt if it appears uncontestable. This procedure is particularly suited when the debt is indisputable but the debtor is using delaying tactics, or when urgent partial payment is needed to preserve cash flow.
Full court proceedings (assignation en paiement)
Full court proceedings are the most formal, longest and most expensive judicial route, reserved for significant or heavily disputed claims for which other procedures are not suitable.
They involve serving the debtor with a summons via a bailiff, followed by the case being argued through standard civil procedure: exchange of written submissions, oral hearing, judgment.
Timelines are significantly longer — 12 to 24 months depending on the court and complexity — and costs substantially higher (legal fees, bailiff fees, potential expert fees). However, the judgment obtained is enforceable and enables all available enforcement measures.
The legal framework in France
France has a precise legal framework governing payment deadlines, late payment penalties and prescription periods. This framework favors creditors, provided they know and use it.
Legal payment deadlines
The French Law on Economic Modernization (LME) of 2008, codified in article L441-10 of the French Commercial Code, established mandatory B2B payment terms:
- 30 days from the invoice date, if no other terms have been agreed
- 60 calendar days from the invoice date, or 45 days end of month: this is the maximum permitted, even by contractual agreement
These deadlines are mandatory: a payment deadline exceeding 60 days cannot be agreed, even by mutual consent, except in specific sectors with regulatory exemptions.
Our article on legal payment terms for invoices in France covers this topic in detail.
Late payment penalties
From the first day of late payment, the creditor has the right to apply late payment penalties — no prior demand letter required. These penalties are calculated based on a statutory rate set by decree, at minimum equal to three times the legal interest rate.
In practice, the minimum applicable rate for B2B late payment penalties is typically around 12 to 15% per annum depending on the period. Some contracts provide for higher rates.
Mentioning the applicable late payment penalties is mandatory in T&Cs and on invoices. Failure to mention them does not prevent their application, but may complicate recovery.
See our article on late payment penalties in France for detailed calculation methods.
The €40 flat-rate compensation
In addition to late payment penalties, the creditor is entitled to a €40 flat-rate compensation for collection costs, automatically due from the first day of late payment in B2B transactions. This is provided for in article L441-10 IV of the French Commercial Code.
This compensation applies automatically, without needing to be claimed explicitly or proven with actual costs. It is due for each overdue invoice.
If actual collection costs exceed €40, the creditor can claim additional compensation on a documented basis.
Our article on flat-rate compensation for collection costs in France explains how to claim this entitlement.
The statute of limitations
The statute of limitations is the deadline beyond which a debt can no longer be pursued in court. Once expired, the debtor can invoke prescription to avoid paying.
Under French commercial law (B2B transactions between merchants), the limitation period is 5 years from the invoice due date, pursuant to article L110-4 of the French Commercial Code.
This period can be interrupted by several acts:
- A formal demand letter
- An acknowledgment of debt by the debtor
- A judicial act (summons, payment order)
Each interruption restarts the limitation period for a new 5-year term.
It is therefore critical not to let receivables go dormant: a simple email reminder does not legally interrupt prescription. Only formally qualified legal acts achieve this.
Our article on the statute of limitations for unpaid invoices in France details the interruption and suspension mechanisms.
Debt collection software
The digitalization of collections has fundamentally transformed business practices over recent years. Collection software enables automation, personalization and optimization of reminder processes in ways that manual intervention simply cannot match.
Why automate your collections?
The time savings are massive. Without a dedicated tool, an accounts manager typically spends 2 to 4 hours per week managing reminders manually — writing emails, tracking responses, making phone calls. Collection software reduces this to a few minutes of oversight.
Recovery rates improve. The consistency and personalization of automated reminders outperform what can be achieved manually. Software sends the right reminder at the right time, with the right message, for every receivable — without omissions, without fatigue, without hesitation.
ROI is rapid. Recovering even a single additional invoice per month through better-targeted reminders can easily offset the cost of a software subscription.
Client relationships are preserved. Well-configured automated reminders maintain a professional, consistent tone that preserves the commercial relationship while expressing the necessary firmness.
How to choose your collection software?
The choice depends on several criteria:
- Company size and invoice volume: a 5-person SME and a 200-person mid-market company have very different needs.
- Whether or not a dedicated credit team exists: if no one focuses on collections full-time, a total automation tool is preferable to a platform requiring active supervision.
- Existing software: compatibility with your ERP or billing software is essential to avoid manual data entry.
- Budget: prices range from €49/month for solutions aimed at freelancers to thousands of euros for enterprise solutions.
Billabex: the AI collection agent
Billabex represents a new generation of collection software, built on generative artificial intelligence. Where traditional software automates manually configured workflows, Billabex creates an autonomous AI agent that manages the entire reminder cycle without human intervention.
The Billabex AI agent:
- Analyzes each receivable considering the amount, age, debtor’s past behavior and nature of the commercial relationship
- Writes personalized, context-aware messages in the appropriate tone
- Chooses the most suitable channel (email, SMS, letter)
- Automatically escalates to a formal demand letter if soft reminders remain unanswered
- Works 24/7 without supervision
For SMEs, freelancers and accounting firms, Billabex delivers total collections automation from €49/month — no training, no complex setup, operational in under an hour.
Debt collection agencies
Alongside software, debt collection agencies represent an alternative for businesses that want to fully outsource their collections or handle particularly difficult receivables.
When to call in a collection agency?
Collection agencies are particularly well-suited in the following situations:
Very old receivables (> 90 days). The older a receivable, the harder it is to recover. Past 90 days, recovery rates drop significantly. Specialized collection agencies, experienced in difficult debts, may be more effective than an internal team for these cases.
Large amounts. For a receivable worth tens or hundreds of thousands of euros, engaging a specialized professional may justify the investment, even if the commission is substantial.
When internal resources are insufficient. A rapidly growing company or one facing a spike in non-payments may lack the internal capacity to effectively manage all cases.
Receivables from foreign-based debtors. International collection procedures are complex. Specialized agencies have the networks and expertise required.
Pricing and how agencies work
Collection agencies typically operate on a success fee basis: they charge a commission only when collection is effective. This commission generally ranges from 5 to 25% of the recovered amount, depending on:
- The amount of the receivable (smaller debts command higher commission rates as the work is proportionally greater)
- The age of the receivable (older debts attract higher commissions)
- The debtor’s profile (individual or business, estimated solvency)
- Case complexity
Some agencies also offer a debt purchase model: they buy your receivables at a discounted price (50–70% of face value for recent debts, much less for older ones) and handle collection themselves. This model guarantees an immediate cash inflow at the cost of a partial loss on the receivable.
Advantages of collection agencies
- No fixed cost: you only pay if they recover the money
- Specialized expertise in difficult receivables
- Access to bailiff and legal networks for judicial escalation
- Full handling of all collection steps
Disadvantages
- Significant commission on recovered amounts
- Partial loss of control over the debtor relationship
- Risk of damaging the commercial relationship if collection methods are perceived as aggressive
For everything you need to know about professional collection services, see our guide on debt collection agencies.
Conclusion
Debt collection is a structured process that, when well managed, can radically transform your business’s financial health. The key lies in anticipation and gradual escalation: preventive action from the moment the contract is signed, consistent and personalized reminders from the first day of delay, controlled escalation to formal channels when necessary.
The good news is that the tools available today — and in particular AI collection agents like Billabex — make it possible to automate the essential parts of this process without dedicating significant time or human resources to it. In 2026, not automating your collections means leaving money on the table.
Whether you choose to manage your collections internally with powerful software, outsource to a specialized agency, or combine both approaches depending on receivable profiles, the most important thing is to act quickly and never leave an unpaid invoice without a response.
