Open invoice in Austria: when a claim may be due
Open invoice in Austria: when a claim may be due. Legal overview for creditors in Austria with documents, risks and next steps.
29 June 2026, Mag. Bernhard Brandauer, Rechtsanwalt
When a customer does not pay, the next step often feels more urgent than preparation. In practice, the claim due date decides whether a legal step is sensible, provable and economically proportionate.
This article structures contract, invoice, payment term and performance for creditors in Austria. It is general information and does not promise payment. It shows which points should be reviewed before reminders, payment order proceedings or enforcement.
BRANDAUER Attorneys do not handle claims as anonymous mass collection. The focus is due date, evidence, objections, limitation, costs and a factual decision on the next step.
What is the current claim situation?
The answers do not replace legal advice. They help structure documents and risk before a request.
Which point matters most right now?
Choose the point that best matches your situation.
Secure invoice, contract, order, proof of performance, due date and previous communication. Without that basis, every further step remains uncertain.
Check open balance, partial payments, payment promises and objections. A lawyer letter can make sense where the claim is traceable.
Disputed claims, existing titles or cross border elements need a separate route decision. Payment order, lawsuit and enforcement have different conditions.
Review question before the next step
The core issue is not pressure but reviewability. For the claim due date, legal basis, amount, due date and debtor reaction need to fit together.
A reminder or lawyer letter is credible only when the open amount is traceable. Partial payments, credits and disputed items should be separated.
Documents that help the firm first
Key documents are contract, order, invoice, proof of performance, reminder, debtor reply and a simple balance overview. For older claims, the due date should be marked immediately.
Do not send sensitive bulk data without prior contact. A structured overview is often enough for the first assessment. Documents are requested through an approved channel after firm contact.
Legal frame in Austria
Depending on the topic, the review frame includes contract, invoice, payment term and performance. Austrian civil, commercial, civil procedure and enforcement law may matter. Which rule carries the case depends on the facts.
The line between out of court collection, payment order proceedings, ordinary lawsuit and enforcement is central. Enforcement generally requires an enforceable title first.
How legal review continues
The firm first checks competence, conflicts of interest, urgency, evidence and economic sense. Only then is a letter, lawsuit or other step assessed.
If a deadline is urgent, an online request does not replace a phone call. A mandate exists only after express acceptance by the firm.
Common mistake: creditors move to the next step too quickly and structure the documents only afterwards. That increases cost risk and evidence risk. A short factual review before escalation is safer.
Frequent questions on open claims
Is a reminder always required before a lawsuit?
Not always. A factual reminder is often useful because it documents due date, open balance and reaction. Whether it is legally required depends on the legal basis and previous communication.
Does the claim check preserve a deadline?
No. An online request does not preserve court or substantive deadlines. If a deadline is urgent, please also call the firm.
Can enforcement start immediately?
No. Enforcement generally requires an enforceable title such as a payment order, judgment or settlement. Before that, the claim, evidence and route to title must be reviewed.
Related pages on forderung-eintreiben.at
Claim, Open invoice, Payment order, Enforcement, Austria