Calculators · Geld und Kosten
Default interest calculator: interest and calculation steps for a claim
Enlarge imageOn the left you enter the principal claim, the start of default and the cut-off date and state whether creditor and debtor are consumers or businesses. On the right is the sum of default interest and the flat reminder fee, plus the number of days and the legal basis; a collapsible section shows the calculation periods when the base interest rate changes. In the example, €2,500 since March 2025 over 599 days gives €267.52 interest when a consumer is involved; this is a worked example. According to the source line, the base interest rate comes from the Deutsche Bundesbank, and the €40 flat fee can be ticked if the debtor is a business.
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All recordings use fictional sample data – no real cases, people or file numbers. AI output can contain errors and does not replace legal advice.
