Set-off raised by the debtor: risks that are hard to reverse

A CFO holding a six-figure receivable against a Czech counterparty files for a payment order. The debtor does not deny the debt outright. It raises a set-off: a counter-claim invoked to extinguish the receivable, in whole or in part, without paying anything. If the objection is procedurally valid, the case does not resolve in the creditor's favour by default — it moves to substantive review, and a receivable that looked collectible a month earlier is now contested.

Set-off raised by a Czech debtor is examined under the general rules on extinguishing obligations, applied through the procedural rules that govern when it may be raised in a pending case. The point that decides most disputes is timing: an objection filed after the statutory reply window closes will, as a rule, not be admitted at all.

This page sets out when a set-off objection actually applies, the sequence a foreign creditor should expect and the deadlines inside it, and what the file needs to contain so that a legitimate receivable is not reduced by a counter-claim that could not withstand scrutiny.

What counts as set-off raised by the debtor in a Czech claim?

A set-off is the debtor's assertion that it holds its own claim against the creditor and wants the two claims extinguished against each other, up to the lower amount. It is not a denial of the underlying debt. It is a separate claim, and it must meet its own conditions before a court examines it on the merits.

A foreign creditor often reads a set-off objection as a delaying tactic and treats it accordingly, replying only with correspondence rather than with documents. That misreads what is happening procedurally. The debtor's counter-claim is now a claim in the proceeding, and it will be tested on the same footing as the receivable it is meant to extinguish — origin, maturity, and evidence.

A set-off objection raised at the wrong stage of proceedings can shift the burden onto the creditor for the remainder of the case, and that shift cannot be undone once the court has ruled on admissibility.

A set-off is a claim, not a shield; the court examines it as one.

When does a debtor's set-off actually apply?

An objection is examined only if the counter-claim is mature, exists between the same two parties, and is of a kind capable of extinguishing the receivable in dispute. A claim that is disputed, unliquidated, or already time-barred does not satisfy these conditions, and the court will say so rather than weigh it on the merits.

Mutuality is the first filter: the counter-claim has to run against the same creditor that holds the receivable, not against a related entity in the same group. Maturity is the second: a claim that has not yet fallen due cannot be set off against one that has. The limitation period runs on the counter-claim independently of the main proceeding, and a debtor who lets its own claim lapse cannot revive it by raising it as a set-off years later.

The sequence a foreign creditor should expect is close to the one described for a payment order against a Czech debtor, except that admissibility of the counter-claim is examined before the merits of either claim are reached.

For a foreign creditor watching a receivable turn into a dispute at the point payment looked closest, the practical question is whether the debtor's counter-claim would survive being tested against the register and the underlying contract before the court rules on it. LISTINA produces a factual report on the counter-claim's origin, its maturity and its overlap with the disputed receivable, drawn from the file and the relevant registers, typically within five to ten working days. Where representation before the court becomes necessary, it is provided by a collaborating advocate. Contact: info@listinafirm.com

The sequence of steps, and where the deadlines sit

The route runs from the creditor's filing to the court's ruling on admissibility, and then, if the objection is admitted, to a substantive review of the counter-claim itself. The deadline that matters most is the debtor's window to reply to the original claim.

• The creditor files a payment order application or a statement of claim.
• The debtor raises the set-off objection within the reply deadline set by the court.
• The court examines admissibility: mutuality, maturity, and the kind of claim involved.
• If admitted, the proceeding turns to a substantive review of the counter-claim.
• The court rules; where the set-off is only partial, the remainder proceeds toward enforcement.

A set-off objection filed after the reply deadline closes is, as a rule, not admitted at all — the debtor's window for raising it does not reopen, and a receivable that could have been enforced months earlier stays contested for the length of the proceeding.

For a foreign creditor also managing service of documents in Latin America, the reply deadline for a set-off objection runs independently of how service abroad was completed, and delays on one side do not extend the other.

A German supplier reached the enforcement stage four months faster after the debtor's counter-claim was shown, through registry documents, to have already been time-barred before the set-off was raised (autumn 2025).

The clock on the counter-claim does not wait for the clock on the main receivable.

What must the file contain to survive a set-off objection?

The file has to show not only that the receivable is owed, but that the debtor's counter-claim does not hold up on mutuality, maturity, or the kind of claim it purports to be. That evidence sits in contracts, registers, and prior correspondence, not in the pleadings alone.

• The underlying contract and invoices supporting the disputed receivable.
• Proof of delivery or performance tied to the receivable.
• Correspondence showing when and how the counter-claim first arose.
• Register extracts confirming the counter-claim's status, including any prior assignment or litigation.
• A limitation-period calculation covering both the receivable and the counter-claim.
• Any prior acknowledgment, waiver, or settlement touching the counter-claim.

Where the counter-claim's origin sits abroad, the same logic applies as when checking the record through the insolvency register in Ireland: the register, not the debtor's account of it, decides what is actually on file.

Once a court has ruled on the merits of a set-off, that ruling on the counter-claim's existence typically becomes binding between the same parties for any later proceeding — a weak counter-claim that was not properly tested at this stage cannot be reopened simply because better evidence turns up afterwards.

An Austrian lessor found that the debtor's set-off counter-claim rested on an invoice already assigned to a third party two years earlier, a fact the record confirmed within weeks (winter 2025).

A set-off objection is only as strong as the counter-claim behind it, and correspondence alone rarely settles which side that turns out to be. LISTINA reconstructs the counter-claim's origin, status and overlap with the disputed receivable from documents and registers, so the creditor's next filing responds to what is actually on record rather than to what the debtor asserts. Where representation is needed, it is provided by a collaborating advocate. Contact: info@listinafirm.com

Act, wait, or stop: how a foreign creditor decides

The right move depends on where the objection stands and how the counter-claim looks against the record. The decision changes at each stage, and waiting past the reply deadline is rarely the neutral option it appears to be.

• Objection filed within the reply deadline, counter-claim plausible on its face → verify the counter-claim's status against the register before the next hearing → creditor's counsel → before the court's admissibility ruling.
• Objection filed, but the counter-claim is disputed or already time-barred on the record → raise the admissibility defect immediately → creditor → before the admissibility ruling.
• No objection filed yet, only announced → continue enforcement preparation without delay → creditor → no separate deadline attaches yet.
• Objection admitted, counter-claim substantively strong → reassess exposure and consider settlement → CFO or finance function → before the next procedural deadline.

The limit of knowledge: a document and registry review before the matter starts can establish whether a counter-claim exists, when it arose, and whether it has been assigned, litigated, or already time-barred elsewhere. It cannot predict how a specific court will weigh disputed facts, and it cannot substitute for the court's ruling on mutuality and maturity once the matter is genuinely contested.

Frequently asked questions

Who decides set-off raised by the debtor?

The court hearing the underlying claim decides both the admissibility and, if admitted, the merits of a set-off objection. It examines whether the counter-claim is mature, exists between the same parties, and is of a kind capable of extinguishing the receivable in dispute before it looks at the counter-claim's substance.

What has to be filed first?

The creditor's claim or payment order application has to be filed first. The set-off objection is the debtor's response to it. A debtor cannot raise set-off as an independent filing before a claim against it is pending.

Where is the binding deadline?

The binding deadline is the court-set window for the debtor's reply to the claim. An objection raised after that window closes is, as a rule, not admitted, regardless of how strong the counter-claim later turns out to be.

What cannot be undone later?

A court's ruling on the existence and maturity of the counter-claim, once made, generally cannot be reopened in a later proceeding between the same parties on the basis of evidence that could have been produced earlier.

LISTINA produces factual reports from documents and public registers. It does not provide legal advice and does not represent parties. Where a matter requires representation before a Czech court or authority, it is handled by a collaborating advocate.

Filip Beneš works on cross-border recovery and enforcement of foreign titles.

A set-off objection changes the economics of a receivable the moment it is raised, and the change compounds with every week spent assessing it from correspondence alone. LISTINA produces the factual report on the counter-claim — its origin, its status in the relevant registers, its overlap with the disputed receivable — typically within five to ten working days, so a decision to contest, settle, or write down can rest on the record rather than on the debtor's account of it. Representation before the court, where needed, is provided by a collaborating advocate. Contact: info@listinafirm.com