Invoice is not paid 2026: which default risks businesses should monitor now

The framework around dealing with unpaid invoices changes regularly, through new interest rates, revised format obligations or economic developments. What counts is not the announcement itself but the question of which master record, which template and which process step now needs adjusting.

The German base rate is adjusted on 1 January and 1 July and published by the Deutsche Bundesbank. Default interest builds on it with a margin of five percentage points against consumers and nine percentage points where no consumer is involved. 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.

Practically every company that works with payment terms is affected, from trades businesses through retail and e-commerce to service providers and SaaS vendors. The difference lies less in the sector than in the volume and structure of receivables.

Business-to-business trade partly uses different values than dealings with consumers. Anyone serving both groups should hold two separate rule sets in the system. A brief confirmation of receipt from the customer saves a great deal of later discussion. The thread running through it stays the same: which default risks businesses should monitor now.

For day-to-day operations this mainly means rework on master data and templates. Interest calculation, reminder letters, instalment plans and every report built on open items and days in default are affected.

The negotiating position shifts as well. Higher ancillary claims increase pressure to pay but make a transparent breakdown of the total amount even more important. For recurring services, a consistent invoice structure prevents queries from arising in the first place. Settling this point once removes the need to renegotiate it in every individual case later.

A reliable approach follows fixed stages rather than instinct. First the payment status is checked, then a factual payment reminder follows, then a formal reminder with an unambiguous final deadline. If payment still fails to arrive, the court dunning procedure or a handover to a collection agency are the options. This care costs minutes and saves days if the matter is ever disputed.

Every stage needs a date, a channel and an owner. Follow-up dates are stored in the system so that no deadline lapses and no case is left sitting. When an invoice stays unpaid, proof of delivery and of the invoice content is the first point to be checked. That brings the starting point back into view: which default risks businesses should monitor now.

Three areas remain worth watching: the semi-annual adjustment of the base rate, the trend in corporate and consumer insolvencies, and the further stages of the e-invoicing obligation. All three act directly on the receivables portfolio and on process design.

The information in this article reflects the position at the date of publication. For a specific application, current values and the individual case should be checked. Unpaid invoices often have a formal cause: a missing purchase order number, the wrong recipient or an unclear description of services. What is prepared properly at this stage shortens every subsequent step.