Outstanding receivables and the new base interest rate: default interest from July 2026

The focus: default interest from July 2026. What matters for creditors is which change directly affects deadlines, interest or evidence obligations, and by when it has to be reflected in their own systems.

The cut-off date matters: the rate applicable during the relevant period of default is the one that counts. Where default runs across a cut-off date, the calculation is split into sections. A fixed follow-up date stops individual receivables from quietly ageing in the portfolio. In practice, reliability pays off faster than pressure.

The change is felt most where many invoices with small amounts arise or where payment terms are long. For accounts receivable this means reviewing templates, interest calculation and reminder texts, regardless of company size.

Self-employed professionals and small businesses are included too, even though they rarely have a dedicated receivables function. A simple but consistently applied routine is especially valuable here. The portfolio should be screened at least quarterly for cases approaching the limitation period. Translated into practice this means: default interest from July 2026.

The impact shows up in three places: the size of ancillary claims, the wording of reminder letters and the system configuration. Changing the interest rate only in the letter but not in the accounting system produces differences at the next reconciliation.

Anyone handing receivables to a service provider should supply the calculation basis with them. Otherwise reconciliation work arises that slows the whole process. Outstanding receivables lose recovery probability with every month that passes, which makes speed a success factor in its own right. What is prepared properly at this stage shortens every subsequent step.

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. That keeps the case understandable for colleagues with no prior knowledge of it.

Switching channel helps: what fails by email is often resolved in a few minutes by phone. The result of the call is then confirmed in writing. An overview by age bracket shows immediately which outstanding receivables need attention first. The thematic core stays the same: default interest from July 2026.

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.

It also pays to look at your own customer portfolio. A cluster of late payments at individual customers is an early warning signal that appears before any statistic. For outstanding receivables, the date of the last customer response should always be recorded alongside the amount. A fixed cycle is more effective than a review that only happens when someone asks for it.