---
title: "Quittio\\Core\\Dunning – API-Referenz"
description: "The public classes in Quittio\\Core\\Dunning."
canonical_url: "https://quittio.dev/docs/api/Quittio/Core/Dunning"
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  "og:title": "Quittio\\Core\\Dunning – API-Referenz"
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---

> Index of every page on this site: [llms.txt](https://quittio.dev/llms.txt)

[API reference](https://quittio.dev/docs/api)

# Quittio\\Core\\Dunning

## quittio/core \#

### [Quittio\\Core\\Dunning](https://quittio.dev/docs/api/Quittio/Core/Dunning)

- [`DefaultInterest`](https://quittio.dev/docs/api/Quittio/Core/Dunning/DefaultInterest)Default interest of a late payment law: the reference rate plus the points of the DunningLaw (business or consumer debtors), split at every change of the reference rate, with the day count basis of the law; a fixed rate of the law for businesses or consumers instead, if it has one. The result goes into DocumentBuilder::interestCharge().
- [`ReferenceRates`](https://quittio.dev/docs/api/Quittio/Core/Dunning/ReferenceRates) interfaceThe reference interest rate of a country's late payment law, e.g. the German Basiszinssatz (section 247 BGB) or the ECB main refinancing rate. Default interest is the reference rate plus the points of the DunningLaw.

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