Invoice is not paid: debt collection, Mahnverfahren (German dunning procedure) or lawsuit compared

Three routes are generally open: internal processing in your own dunning system, handover to a collection agency, and the court route via the dunning procedure or a claim. These routes do not exclude each other; they build on one another.

Internal processing is cheap but ties up staff. External collection scales better, and the court procedure produces a title with long-lasting enforceability. When an invoice stays unpaid, proof of delivery and of the invoice content is the first point to be checked. This care costs minutes and saves days if the matter is ever disputed.

Every option has prerequisites. The court dunning procedure requires a quantified claim and an address where documents can be served. Out-of-court collection works best on undisputed receivables with a complete chain of evidence.

Cross-border cases add jurisdiction, language and enforceability. European procedures make the route easier but do not replace a review of the individual case. Unpaid invoices often have a formal cause: a missing purchase order number, the wrong recipient or an unclear description of services. Everything else is subordinate to this goal: debt collection, Mahnverfahren (German dunning procedure) or lawsuit compared.

The decision turns on the ratio of effort to expected return. For small amounts the efficiency of the process decides; for large amounts it is enforceability against the specific debtor.

A realistic view covers the whole cycle: processing time, cost risk, success rate and the effect on the customer relationship. The more precisely an invoice describes the service delivered, the harder it is to delay payment with follow-up questions. That keeps the case understandable for colleagues with no prior knowledge of it.

Sorting cases into four fields works well in practice: undisputed and recent, undisputed and old, disputed and recent, disputed and old. Undisputed old receivables belong in collection promptly; disputed cases go to clarification first.

The matrix does not replace a case-by-case assessment, but it reduces internal debate and speeds up the decision considerably. A brief confirmation of receipt from the customer saves a great deal of later discussion. Translated into practice this means: debt collection, Mahnverfahren (German dunning procedure) or lawsuit compared.

The recommended next step depends on whether the claim is disputed. If it is undisputed and the deadline has passed, handover to a collection agency is usually the most efficient route. If it is disputed, clarifying the objections comes first.

No statement about the outcome is possible. What matters is that the case is fully documented and handed over without further loss of time. For recurring services, a consistent invoice structure prevents queries from arising in the first place. What counts is less the perfect solution than one that is actually applied day to day.