Assignment notice in the Czech Republic: step by step
An owner assigns a receivable to a factoring company, or a buyer takes over a supplier's outstanding invoices as part of a deal, and the debtor keeps paying the original creditor because no one told them otherwise. Payment made to the wrong party after a valid assignment does not automatically discharge the debt, but the gap it opens is expensive and slow to close.
An assignment notice is the written communication that tells a debtor a receivable has changed hands; under Czech contract law it is the assignee's practical safeguard, not a court filing. There is no statutory form, but the debtor is protected if they pay the original creditor before the notice reaches them. The controlling parameter is delivery, not registration.
This page sets out who sends the notice and where it goes, the deadline that decides whether payment to the old creditor still counts, the documents the file needs, and the point at which an owner should stop and get the notice reviewed before it is sent.
What triggers an assignment notice, and what happens if it is skipped?
An assignment notice becomes necessary the moment a receivable is transferred to a new creditor and the debtor still owes performance. Skipping it does not void the assignment, but it leaves the debtor free to discharge the debt by paying the assignor, and that payment stands even after the assignee later proves the transfer.
Under Czech contract law, an assignment of a receivable is effective between assignor and assignee from the moment the assignment contract takes effect, regardless of the debtor's knowledge. The debtor's position is different: until the debtor is notified, or until the assignee proves the assignment, a payment made to the original creditor discharges the debt in full. Once that payment is made, the assignee's claim against the debtor cannot be restored – the assignee is left pursuing the assignor instead, which is a different and slower recovery. Where the assignor concealed an earlier payment or otherwise obstructed the notice, the assignee may also pursue the assignor's personal liability for the shortfall, separately from the assigned receivable itself.
A Slovak buyer of a portfolio of invoices avoided a dispute worth a low seven-figure sum by sending assignor-issued notices to every debtor before the first payment date after closing (summer 2025).
When does a Czech assignment notice apply?
The notice applies whenever a receivable governed by Czech law changes creditor and the debtor has not yet performed. It does not apply to receivables that are non-transferable by their nature or by contractual prohibition, and it does not apply once the debtor has already paid in good faith before any notice or proof reached them.
Two conditions decide whether the mechanism is live. First, the underlying receivable must be assignable: some obligations are excluded by their nature, and a validly drafted anti-assignment clause closes the route to assignment entirely, unless the debtor later waives it in writing. Second, the debtor must not yet have discharged the debt through a payment made in good faith to the original creditor. If either condition fails, the notice arrives too late to change anything.
Either the assignor or the assignee may send the notice, but the practical effect differs. A notice from the assignor is conclusive on its own – the debtor cannot demand proof and pays the assignee at their own risk if they ignore it. A notice from the assignee is not enough by itself; the debtor may require proof of the assignment, typically the assignment contract or a written confirmation from the assignor, before treating the assignee as the new creditor. In share and asset deals, receivables assigned as part of the transaction package need the same notice discipline as a standalone assignment – see how receivables are handled in share and asset deals.
The safer notice, in practice, is the one the assignor sends, not the one the assignee drafts.
An owner who has already sent an assignment notice and is now facing a debtor who claims it never arrived is past the point where a general explanation helps – what matters next is what the file can actually prove. LISTINA prepares a factual report on the assignment file: the contract, the notice, and the delivery record, reviewed against what a Czech debtor or court would expect to see, delivered within five to eight working days. Write to info@listinafirm.com. Where representation before a Czech court becomes necessary, it is handled by a collaborating advocate.
The route: from assignment to notice, and the deadlines that carry consequences
There is no statutory deadline for sending an assignment notice, but delay carries a real cost: every payment the debtor makes to the assignor before the notice lands is valid, and the assignee has no route to reverse it. The practical deadline is the debtor's next payment date, not a date fixed by law.
The route runs in three steps. The assignor and assignee conclude the assignment contract, which fixes the transfer as between themselves. The notice, or the proof of assignment, is then delivered to the debtor – by letter, by an authenticated document, or in practice by both, since the debtor's protection depends on what reached them and when. The debtor then redirects payment to the assignee for every obligation that falls due after the notice is received.
- Assignment concluded, debtor not yet informed → send the notice immediately → assignor or assignee → before the debtor's next payment date
- Debtor requests proof of an assignee-sent notice → provide the assignment contract or the assignor's confirmation → assignee → without unreasonable delay, or the debtor may pay the assignor
- Debtor already paid the assignor before notice arrived → payment stands, assignee turns to assignor for the sum received → assignee → no fixed deadline, but the recovery route changes
- Receivable carries an anti-assignment clause → check the clause's enforceability before relying on the assignment → assignor or assignee → prior to the assignment contract, not after
A Czech equipment lessor lost a payment cycle worth a low six-figure sum because the notice was sent by ordinary post two weeks after the debtor's scheduled payment date; the debtor's payment to the assignor that week was valid and irreversible (spring 2025).
What must the notice and its file contain?
The notice itself needs no prescribed form, but the file behind it does the practical work: it is what lets a debtor, a court, or a subsequent buyer of the receivable accept the assignment without further inquiry. Four to six documents cover the standard case.
- The assignment contract, dated and signed by assignor and assignee
- A copy of the underlying contract that created the receivable
- Any anti-assignment clause and, where relevant, the debtor's written waiver of it
- The notice text itself, addressed to the debtor, with proof of delivery or dispatch
- Evidence of the receivable's value and due date – an invoice, a statement, or an acknowledgement of debt
- A record of any payment the debtor made after the assignment contract but before the notice was received
Where the debtor sits outside the Czech Republic, delivery of the notice follows the applicable cross-border service rules rather than a simple letter – see how service of documents works under the Lugano framework.
A notice with no proof of delivery is, for practical purposes, a notice that was never sent.
Before a notice goes out to a debtor outside the Czech Republic, the delivery method itself can decide whether the notice counts at all. LISTINA reviews the document set and the planned delivery route and reports back within five to seven working days, so the notice is sent once, correctly, rather than twice. Contact info@listinafirm.com; a collaborating advocate handles any step that requires representation before a court or authority.
Act, wait, or stop: the decision point
Three positions cover almost every assignment notice matter: send the notice now because a payment date is approaching, wait because the receivable's assignability is still unclear, or stop because the underlying contract may prohibit the assignment outright. Which position applies turns on facts already in the file, not on how urgent the matter feels.
Send the notice now if a payment date is close, if the debtor has shown any sign of paying the wrong party, or if the assignment is part of a closing where several debtors must be notified together. Wait if the assignability of the receivable is genuinely unclear and a wrong notice could itself trigger a dispute. Stop and get the underlying contract reviewed first if there is any anti-assignment clause on record – sending a notice under a prohibited assignment does not cure the prohibition, and can create a separate breach.
Owners assessing several assigned receivables at once often start from the transaction overview reports before deciding which notices to prioritise.
What cannot be established from the assignment contract and the debtor's file alone: whether the debtor has already made an informal arrangement with the assignor that a later notice cannot unwind, and whether a foreign debtor's own law treats the assignment or the notice differently from Czech law. Those questions need the debtor's own records or foreign counsel, not a Czech document review.
Frequently asked questions
Where is assignment notice filed?
An assignment notice is not filed anywhere; it is delivered directly to the debtor, by letter or by a method that leaves proof of receipt. There is no court or register that records it, which is why the delivery record itself becomes part of the file.
How long does the court take?
In the ordinary case there is no court involved at all – the notice is a private communication between creditor and debtor. A court becomes relevant only if the debtor disputes the assignment, and then the timeline follows the general civil proceedings rules, not a separate deadline for assignment matters.
Can the other side object?
The debtor can decline to treat an assignee-sent notice as binding until proof of the assignment is provided, and may validly pay the assignor if that proof does not arrive without unreasonable delay. What the debtor cannot do is retroactively undo a notice once adequate proof has been supplied.
What follows the decision?
Once the debtor accepts the notice, payments are redirected to the assignee for every obligation falling due afterward. If the debtor instead paid the assignor before the notice arrived, the assignee's remaining route is against the assignor, not the debtor, for the amount received.
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.
If a payment date is approaching and the assignment file is not yet complete, waiting for certainty is itself a decision, and it favours the debtor. LISTINA delivers a factual report on the assignment and notice file, covering what the documents currently show and what they do not, typically within five to eight working days of instruction. Reach us at info@listinafirm.com; representation before a Czech court, if the matter reaches that stage, is provided by a collaborating advocate.