Set‑off in Belgian Insolvency 2026: When Creditors Can Net Debts and When They Can’t

Set-off in insolvency belgium is one of the most valuable, and most misunderstood, tools available to creditors when a counterparty enters judicial reorganisation or bankruptcy. In broad terms, Belgian law allows a creditor to net mutual debts against claims owed to the insolvent party, but only where strict conditions of mutuality, liquidity and maturity are met at the right moment, and only where statutory exceptions do not intervene. The continuing EU insolvency harmonisation agenda, flowing from Directive (EU) 2019/1023 on preventive restructuring frameworks and its transposition into Belgian law, has sharpened the questions creditors must ask about timing, clawback exposure and the enforceability of contractual netting.

This guide explains, in practical terms, when set-off works, when it fails, and what credit managers, banks and in-house counsel should do to protect their net position. The practical takeaway is simple: a well-documented set-off asserted at the right moment can convert an unsecured exposure into an effective recovery, while a mistimed or poorly evidenced one can be reversed.

For creditors seeking case-specific advice, the Insolvency lawyers, Belgium (directory) provides access to qualified practitioners who handle set-off disputes and enforcement.

Key terms and the baseline rule on set‑off in Belgian insolvency

Set-off in insolvency belgium rests on the general civil-law concept of compensation: where two parties owe each other obligations, those obligations can extinguish one another up to the lesser amount. The starting point is the Belgian statutory framework for set-off under the Civil Code, supplemented by the insolvency provisions of Book XX of the Code of Economic Law (Wetboek van economisch recht / Code de droit économique) and the case-law of the Court of Cassation (Hof van Cassatie / Cour de cassation).

The central principle is that set-off operates where reciprocal claims are mutual, liquid and due (liquide et exigible / vaststaand en opeisbaar), and, critically in an insolvency context, where those conditions are satisfied before or at the moment the proceedings open, with particular latitude where the claims are closely connected.

What counts as a mutual debt?

Mutuality means the same two legal persons are, respectively, debtor and creditor to each other in their own right. The claims must sit between the identical parties: a debt owed by a group subsidiary cannot ordinarily be set off against a claim owed to its parent, because the required reciprocity is absent. Mutual debts belgium insolvency questions frequently turn on identity of parties, assignment of receivables, and whether a claim has been transferred to a third party before the opening. Where a receivable was assigned away before insolvency, the assignor can no longer rely on set-off against it.

Timing: claims existing at opening versus later claims

Timing is decisive. The protected position is generally that the reciprocal claims already existed, and had become liquid and due, at the time the insolvency is opened. Claims that arise after the opening, or that only mature afterwards, are much harder to net, although Belgian law recognises set-off between closely connected claims (connexiteit / connexité) even where maturity is less clear-cut. The practical consequence is that a creditor who can show both legs of the set-off were in place at the opening date stands on far firmer ground than one relying on obligations crystallising during the proceedings. For the interaction with the latest reforms, see the section below on EU harmonisation and Belgian practice.

Judicial reorganisation versus bankruptcy, differences for set‑off

The availability of insolvency set-off belgium differs materially between the two principal regimes. In a court-supervised judicial reorganisation (réorganisation judiciaire / gerechtelijke reorganisatie), the debtor usually remains in possession and benefits from a suspension of enforcement; in bankruptcy (faillissement / faillite), a trustee (curator / curateur) takes control and liquidates the estate. Each regime treats the moment and mechanics of asserting set-off differently, and the moratorium effects of reorganisation are the main point of divergence.

Set‑off in a judicial reorganisation

Judicial reorganisation set-off is complicated by the moratorium that protects the debtor during the suspension period. The reorganisation is designed to preserve the business as a going concern, so the court-supervised process restricts individual creditor actions that would undermine the collective procedure. Where reciprocal claims were already mutual, liquid and due before the suspension, a creditor is generally in a stronger position to rely on compensation that had effectively already occurred. New debts contracted after the opening of the reorganisation are typically treated separately, so a creditor should be cautious about assuming it can freely net pre- and post-opening exposures.

The safest approach is to document the position as it stood at the opening date and to raise the intended set-off expressly with the debtor and, where appropriate, the supervising court.

Set‑off in bankruptcy (faillissement)

Bankruptcy set-off rules belgium centre on the principle that reciprocal claims connected to each other and existing before the bankruptcy may be netted, even though the bankruptcy otherwise crystallises the collective rights of creditors. Once bankruptcy is declared, a creditor cannot generally create new set-off positions by acquiring claims or incurring obligations to improve its recovery, such manoeuvres risk challenge as attempts to manipulate the distribution. The trustee will scrutinise any asserted set-off to confirm that mutuality and maturity predate the judgment opening the bankruptcy. A valid connected set-off effectively allows the creditor to recover on its claim to the extent of the reciprocal debt, ahead of the general body of unsecured creditors.

Worked example. Creditor A supplies goods to Company B and is owed €80,000, invoiced and due before B’s bankruptcy. B had separately delivered services to A, so A owes B €50,000, also liquid and due before the opening. On the bankruptcy of B, A asserts set-off: the mutual debts extinguish up to €50,000, leaving A as an unsecured creditor for the €30,000 balance and A pays nothing further to the estate. Had A’s €50,000 obligation only fallen due after the opening and the claims not been connected, the trustee could demand full payment of €50,000 to the estate while A ranked as an ordinary creditor for the whole €80,000, a dramatically worse outcome.

The example shows why creditor rights belgium insolvency planning must focus relentlessly on timing and documentation.

Contractual netting and close‑out netting, enforceability in insolvency

Statutory set-off is not the only route to a net position. Many commercial and financial arrangements contain contractual netting clauses, and in the financial markets, ISDA-style master agreements provide for close-out netting. Netting belgium insolvency analysis requires separating these mechanisms, because contractual netting and close-out netting belgium are treated under distinct principles and enjoy particular protections for financial collateral and qualifying financial contracts.

ISDA-style close-out: mechanics and court treatment

Close-out netting under an ISDA master agreement works by terminating all outstanding transactions on a counterparty’s default or insolvency, valuing each, and reducing them to a single net sum payable one way or the other. The commercial purpose is to avoid cherry-picking by an insolvency practitioner, that is, enforcing the in-the-money contracts while disclaiming the out-of-the-money ones. Belgian law implementing the EU financial collateral regime (notably the Belgian Financial Collateral Act of 15 December 2004 transposing Directive 2002/47/EC) generally recognises and upholds close-out netting for qualifying financial contracts, so that the net figure, rather than each gross leg, is what enters the insolvency.

Creditors relying on ISDA documentation should ensure the governing agreement is validly concluded, that the counterparty and transaction types fall within the protected categories, and that the close-out mechanism is triggered cleanly on the relevant default event.

Financial collateral and netting exceptions

The financial collateral framework carves out qualifying arrangements from several ordinary insolvency constraints, allowing netting and the enforcement of collateral to proceed notwithstanding the opening of proceedings. This is why close-out netting belgium positions in the financial sector are more robust than ordinary commercial set-offs: the legislature deliberately insulated them to protect systemic stability. The protection is not unlimited, it depends on the parties, the collateral and the contract falling within the defined scope, but where the conditions are met, the netted exposure is generally safe from the moratorium and from avoidance challenge on ordinary grounds.

Cross-border recognition

Where counterparties sit in different jurisdictions, for example a Belgian debtor and a UK or other foreign creditor, recognition of close-out netting and set-off turns on the applicable law of the contract, the EU Insolvency Regulation (Regulation (EU) 2015/848) for proceedings within the EU and, for third countries, private international law rules. Creditors should confirm that the chosen governing law supports netting and that the Belgian court will recognise the foreign-law result.

EU insolvency harmonisation, what is changing and the practical impact on set‑off in insolvency belgium

The current reform agenda stems from the continuing transposition and refinement of Directive (EU) 2019/1023 on preventive restructuring frameworks, together with the broader EU drive, including the European Commission’s proposed Directive harmonising certain aspects of insolvency law, to harmonise avoidance actions and procedural timeframes. For set-off in insolvency belgium, the most relevant practical effects concern the timing of avoidance (clawback) actions, the clarity of limitation periods, and the mechanisms through which an insolvency practitioner can challenge pre-insolvency transactions, including set-offs achieved shortly before the opening. Creditors should note that some of these harmonisation measures remain at proposal or transposition stage and should verify the current position before relying on any specific rule.

Avoidance actions and set‑off, examples

Avoidance (clawback) rules allow an insolvency practitioner to unwind certain transactions entered into during a suspect period before the opening, where they prejudice the general body of creditors. A set-off can come within scope where it was engineered artificially to improve one creditor’s recovery, for example, where a creditor rapidly acquired a claim against the debtor specifically to net it against its own debt shortly before the bankruptcy. The harmonisation measures aim to standardise the categories of avoidable transactions and the look-back periods across Member States, which should give creditors greater certainty but also a clearer basis for trustees to challenge opportunistic netting.

Belgian trustees may be expected to apply avoidance scrutiny more consistently where the timing of a set-off looks tactical rather than ordinary course.

Practical steps for creditors to reduce clawback risk

• Rely on genuine, pre-existing mutual debts. The strongest set-off is one arising from the ordinary trading relationship, with both legs liquid and due well before any sign of insolvency.
• Avoid late acquisition of claims. Buying up a third party’s receivable against the debtor to manufacture a set-off is the classic target for avoidance; do not do it in the run-up to an opening.
• Document the business rationale. Keep records showing that the reciprocal obligations arose for normal commercial reasons and were due before the critical date.
• Diarise the critical dates. Track the opening date and any suspect-period start so that you can assess clawback exposure before relying on a net position.
• Take advice early. Where the counterparty is distressed, confirm the set-off position before the opening rather than scrambling afterwards.

Common exceptions and pitfalls, when set‑off is denied

Even a strong-looking set-off can fail. The denial of set-off in insolvency belgium usually arises from one of three sources: a statutory exception, a clawback challenge, or a procedural misstep. Creditors should treat each as a live risk and test their position against all three before assuming a net recovery.

Preferential claims and public receivables

Certain categories of claim enjoy special statutory treatment that can affect ordinary set-off. Employee claims and public receivables, tax and social security debts, are frequently subject to protective or preferential regimes. A creditor cannot assume it can freely net its own obligation against a claim that the law treats as privileged or that is owed to a protected category. Where public or employee-related amounts are involved, confirm the specific statutory position before relying on compensation.

Avoidance and clawback exposure

As noted above, a set-off achieved during the suspect period, or one that reflects an artificial build-up of a net position, is exposed to avoidance. The risk is highest where the creditor had knowledge of the debtor’s difficulties and acted to improve its own position at the expense of others. The practical effect is that a trustee may reverse the set-off, requiring the creditor to pay the gross amount into the estate and prove its claim as an ordinary creditor.

Procedural missteps

Set-off is not purely automatic in practice: a creditor who fails to assert it clearly, fails to notify the trustee or administrator, or fails to lodge a proper proof of claim can find its net position disregarded or disputed. Common errors include asserting set-off too late, failing to produce documentary evidence of the reciprocal debts, and neglecting to file the claim within the prescribed period. The remedy is disciplined, timely action, described in the checklist below.

Practical checklist for creditors asserting set‑off in insolvency belgium

This checklist converts the legal principles into concrete steps. It is organised around the moment of the opening, because timing governs the whole analysis. Credit managers should run through it as soon as a counterparty shows signs of distress, and again immediately on the opening of proceedings.

Before the opening:

• Map the relationship. Identify every claim you owe to the counterparty and every claim it owes to you; confirm they are between the identical legal persons.
• Test liquidity and maturity. Check which claims are already liquid and due; accelerate invoicing and formal demands where contractually permitted and commercially justified.
• Preserve evidence. Collect contracts, invoices, delivery records and statements of account proving the amount and due date of each leg.
• Assess clawback risk. Do not acquire third-party claims or restructure obligations purely to build a net position; such steps invite avoidance.

At and after the opening:

• Confirm the opening date. Establish the precise date and regime, reorganisation or bankruptcy, because the rules differ.
• Notify the practitioner. Inform the trustee or administrator in writing that you intend to rely on set-off, specifying the reciprocal claims and amounts.
• File your claim. Register your claim within the prescribed period, expressly reserving your set-off, so your net balance is recognised. Claims are generally filed electronically via the Central Solvency Register (RegSol).
• Assess cross-border and netting issues. Where financial contracts or foreign counterparties are involved, confirm whether close-out netting or the financial collateral regime applies.
• Seek interim relief if needed. If the practitioner demands gross payment while disputing your set-off, consider protective measures to preserve your position.

Sample notice language. When asserting set-off to a trustee or administrator, short, precise wording is more effective than a long narrative. For example: “We hereby give notice that our claim against the estate in the amount of €[ ], due on [date], is to be set off against our reciprocal obligation of €[ ], also liquid and due before the opening of proceedings, leaving a net balance of €[ ] which we reserve to claim.” Adapt the figures and dates to your position, and attach the supporting evidence.

Litigation strategy and remedies

Where a set-off is disputed, strategy and evidence decide the outcome. Creditors should decide early whether to litigate, negotiate within the reorganisation, or pursue protective measures while the position is clarified. The litigation dimension of set-off in insolvency belgium typically arises when a trustee challenges mutuality, timing or the characterisation of the set-off as an avoidable transaction. Disputes are generally heard before the competent Enterprise Court (ondernemingsrechtbank / tribunal de l’entreprise).

Evidence and documentation to prioritise

The documentary record is the single most important factor. Prioritise contracts establishing the reciprocal obligations, invoices and statements showing amounts and due dates, correspondence demonstrating the ordinary-course origin of the debts, and any netting or master agreement relied upon. Where close-out netting is at issue, the executed master agreement, confirmations and the termination notice are essential. Clear, contemporaneous evidence defeats most challenges that the reciprocal claims were not liquid and due before the opening.

When to seek protective relief

If the trustee demands immediate gross payment or seeks to realise an asset while disputing your net position, interim or protective relief may be appropriate to hold the position until the set-off is determined. Early intervention is usually preferable to paying gross and then attempting to recover. In a reorganisation, negotiation within the collective process, for instance, securing recognition of the net claim in the restructuring plan, is often more efficient than contested litigation, and preserves the commercial relationship where the business survives.

Conclusion and recommended next steps

Set-off in insolvency belgium remains a powerful protection for creditors, but it rewards preparation and punishes delay. The decisive questions are always the same: are the claims mutual, are they liquid and due (or closely connected), and were those conditions met at the opening of proceedings? Layered on top are the regime differences between judicial reorganisation and bankruptcy, the distinct treatment of contractual and close-out netting, and the ongoing harmonisation measures that sharpen avoidance and timing analysis. Creditors who map their exposures early, document both legs of the set-off, notify the practitioner promptly and file a reserved proof of claim will secure the net recovery the law allows; those who move late or manufacture a position risk denial or clawback.

For a case-specific assessment of set-off in insolvency belgium, consult a qualified insolvency practitioner through the Insolvency lawyers, Belgium (directory).

Sources

1. EUR-Lex, Directive (EU) 2019/1023 on preventive restructuring frameworks
2. EUR-Lex, Regulation (EU) 2015/848 on insolvency proceedings
3. Belgian Official Gazette / e-Justice portal (Moniteur Belge / Belgisch Staatsblad)
4. Belgian federal justice services (FPS Justice)
5. FPS Economy (Belgium), Companies and insolvency information
6. Orde van Vlaamse Balies / Advocaat.be
7. Central Solvency Register (RegSol)