Unpaid Commercial Invoices and Supply-Chain Payment Disputes in Germany

Unpaid commercial invoices are a common source of disputes in German and international supply chains. A buyer may simply fail to pay on time, but payment delays frequently develop into more complex disputes involving alleged defects, set-off, delayed delivery or contractual counterclaims.

For foreign suppliers seeking debt collection in Germany, the first question should therefore be whether the debtor simply has not paid or whether there is a genuine commercial dispute.

German law provides efficient mechanisms for both situations. Undisputed claims may be pursued through the German payment order procedure (Mahnverfahren), while disputed claims generally require ordinary court proceedings.

This guide explains the principal options for recovering unpaid commercial invoices in Germany, including default interest, the Mahnverfahren, litigation, enforcement and insolvency risks.

When Is a Commercial Invoice Overdue in Germany?

The payment terms agreed in the contract determine when an invoice becomes due. Once the claim is due, the question is whether the debtor is also in default (Verzug).

Under § 286 German Civil Code (Bürgerliches Gesetzbuch – BGB), default generally occurs after the creditor has demanded payment following maturity.

However, a separate reminder is not always required. In particular, default may arise automatically where:

• a specific payment date has been agreed;

• the payment date can be calculated from a specified event;

• the debtor seriously and definitively refuses payment; or

• in a B2B transaction, payment has not been made within 30 days after both maturity and receipt of the invoice.

Even where a formal reminder is not legally required, sending a clear written payment demand is usually advisable. It creates a reliable record and often reveals whether the debtor simply needs additional time or intends to dispute the claim.

Default Interest on B2B Invoices in Germany

Once a business debtor is in default, § 288(2) BGB provides for default interest of nine percentage points above the statutory base interest rate.

In addition, a business creditor is generally entitled to the statutory EUR 40 recovery-cost lump sum under § 288(5) BGB. Further damages caused by late payment may also be recoverable.

For larger commercial claims, default interest can become economically significant. Creditors should therefore establish the precise date on which default commenced rather than calculating interest merely from the date of the invoice.

Unpaid or Disputed? The Key Question in German Debt Recovery

Before commencing commercial debt recovery in Germany, the creditor should determine whether the claim is genuinely disputed.

Typical defences raised by German buyers include:

• defective or non-conforming goods;

• late or incomplete delivery;

• breach of contractual specifications;

• damages or contractual penalties;

• set-off (Aufrechnung) against counterclaims; and

• rights to withhold payment (Zurückbehaltungsrechte).

If the debtor acknowledges the invoice and merely fails to pay, the German Mahnverfahren may provide an efficient route to an enforceable title.

Where the debtor has already raised substantive objections, commencing ordinary litigation directly will often be more efficient.

Defective Goods and Payment Disputes: § 377 HGB

Alleged defects are particularly common in supply-chain payment disputes in Germany.

Where the transaction is a commercial sale between merchants, § 377 German Commercial Code (Handelsgesetzbuch – HGB) can be decisive.

The buyer must inspect the goods promptly after delivery, insofar as this is feasible in the ordinary course of business, and notify the seller of identifiable defects without undue delay. Latent defects must generally be notified without undue delay after discovery.

If the buyer fails to give timely notice, the goods may be deemed approved in respect of the relevant defect.

Accordingly, where a buyer refuses payment because of alleged quality problems, suppliers should immediately establish:

When was the alleged defect discovered, what exactly was complained about, and when was the seller first notified?

A late or insufficient defect notification can materially strengthen the supplier’s payment claim.

How Can an Unpaid Invoice Be Recovered in Germany?

If out-of-court collection efforts fail, creditors generally have two principal options:

1. German Payment Order Procedure – Mahnverfahren

The Mahnverfahren under §§ 688 et seq. German Code of Civil Procedure (Zivilprozessordnung – ZPO) is a simplified judicial procedure for monetary claims.

The creditor applies for a Mahnbescheid. At this stage, the court does not conduct a substantive examination of the underlying claim.

After service of the Mahnbescheid, the debtor has two weeks to lodge an objection (Widerspruch).

If no objection is filed, the creditor can apply for a Vollstreckungsbescheid. This constitutes an enforceable title and allows the creditor to commence compulsory enforcement.

The Mahnverfahren is particularly attractive for undisputed commercial debts in Germany because it can be faster and less expensive than ordinary litigation.

However, where the debtor is expected to contest the claim, the advantage is limited.

2. Ordinary Commercial Litigation

If the debtor disputes liability – for example because of alleged defects, counterclaims or contractual interpretation – the creditor can commence ordinary court proceedings.

Depending on the value and nature of the dispute, proceedings are brought before the competent German civil court or specialised commercial chamber.

The court will examine the contractual documentation, correspondence, delivery records and other evidence. Technical disputes may require expert evidence.

For international suppliers, an early assessment of jurisdiction and governing law is particularly important before proceedings are commenced.

How Are German Judgments Enforced?

Obtaining a judgment or Vollstreckungsbescheid is only the first stage if the debtor still refuses to pay.

German compulsory enforcement (Zwangsvollstreckung) offers several mechanisms, including:

• attachment of bank accounts;

• attachment of receivables owed to the debtor;

• seizure of movable assets;

• compulsory mortgages and enforcement against real estate; and

• a debtor’s asset disclosure (Vermögensauskunft).

Under § 802c ZPO, a debtor may be required to disclose its assets. This can be particularly useful where the creditor knows that the debtor is operating but does not know where attachable assets are located.

For effective debt enforcement in Germany, creditors should therefore investigate the debtor’s assets and solvency at an early stage rather than waiting until judgment.

What Happens if the German Debtor Becomes Insolvent?

Repeated payment delays, broken payment promises and requests for substantial extensions can indicate financial distress.

A mere insolvency application does not automatically prevent individual enforcement. During preliminary insolvency proceedings, however, the insolvency court may prohibit or suspend enforcement measures.

Once insolvency proceedings have been formally opened, individual insolvency creditors are generally prevented from pursuing separate enforcement and must register their claims in the insolvency proceedings.

Suppliers should also review whether they benefit from contractual security.

A properly agreed retention of title (Eigentumsvorbehalt) can provide important protection if delivered goods remain identifiable. Set-off rights may also survive insolvency, subject to the restrictions of the German Insolvency Code (Insolvenzordnung – InsO).

Creditors should therefore assess insolvency risks early. Obtaining a judgment against a company with no recoverable assets has limited commercial value.

Cross-Border Debt Collection in Germany

International supply relationships require several additional questions to be addressed before commencing proceedings:

1. Which country’s courts have jurisdiction?

2. Which law governs the contract?

3. Does the UN Convention on Contracts for the International Sale of Goods (CISG) apply?

4. Where are the debtor’s assets located?

Within the European Union, Regulation (EU) No 1215/2012 (Brussels I Recast) governs jurisdiction in many commercial disputes and facilitates the recognition and enforcement of judgments across Member States.

For international sales contracts, the CISG should also be considered. A contractual choice of German law does not necessarily exclude the CISG. If applicable and not effectively excluded, the CISG may govern important issues such as delivery obligations, conformity of goods and remedies for breach.

This can be particularly important where a foreign supplier is pursuing an unpaid invoice against a German buyer who alleges defects.

Practical Steps for Recovering an Unpaid Invoice in Germany

A foreign supplier facing non-payment by a German customer should generally:

1. Review the contract and payment terms. Confirm maturity, jurisdiction, governing law and any contractual security.

2. Secure the evidence. Preserve purchase orders, invoices, delivery documents, correspondence and any acknowledgements of debt.

3. Analyse the debtor’s objections. In particular, examine defect notices, set-off and withholding arguments.

4. Send a formal payment demand. Set a short and clear deadline and claim applicable default interest and costs.

5. Check the debtor’s solvency. Determine whether immediate action is commercially justified.

6. Choose the appropriate procedure. Use the Mahnverfahren for suitable uncontested claims and ordinary litigation where a substantive dispute already exists.

7. Consider enforcement from the outset. Identify bank accounts, receivables, real estate or other German assets where possible.

Frequently Asked Questions

Can a foreign company recover an unpaid invoice in Germany?

Yes. Foreign companies can pursue payment claims before German courts if German courts have jurisdiction. The applicable jurisdiction rules depend on the contract, the debtor’s domicile and the relevant international or EU rules.

Do I need to send a payment reminder before suing in Germany?

Not always. German law recognises several situations in which a debtor enters default without a separate reminder. Nevertheless, a formal written demand is often commercially and evidentially useful.

What is the German Mahnverfahren?

The Mahnverfahren is a simplified judicial payment-order procedure for monetary claims. If the debtor does not object, the creditor can obtain an enforceable Vollstreckungsbescheid without ordinary litigation.

What happens if the debtor disputes the invoice?

If the debtor raises substantive objections, the claim may need to be determined in ordinary civil proceedings. Typical disputes concern defective goods, contractual performance, set-off and rights to withhold payment.

Can I claim interest on an unpaid B2B invoice in Germany?

Yes. Once a business debtor is in default, the statutory rate under § 288(2) BGB is nine percentage points above the applicable base interest rate, unless a different contractual arrangement applies.

How long does debt recovery in Germany take?

This depends primarily on whether the claim is contested. An uncontested Mahnverfahren can produce an enforceable title relatively quickly. Disputed commercial litigation can take considerably longer, particularly where witnesses or expert evidence are required.

Conclusion

Recovering unpaid commercial invoices in Germany is generally straightforward where the debtor does not dispute the debt. The German Mahnverfahren can provide an efficient route to an enforceable title.

The position changes once the buyer raises alleged defects, set-off, damages or other counterclaims. At that point, the matter becomes a commercial litigation and supply-chain dispute, and the underlying contract, evidence, § 377 HGB and – in international sales – the CISG should be examined carefully.

For foreign suppliers in particular, the best recovery strategy combines legal analysis with a practical assessment of the debtor’s solvency and assets. The objective should not simply be to obtain a judgment, but to obtain payment.

Need Legal Advice?

For advice on commercial debt recovery, unpaid invoices and supply-chain disputes in Germany, contact Götz Gaiser at Prelia PartG mbB Rechtsanwälte Avocats, exclusive Global Law Experts member for Commercial Litigation in Germany.