> For the complete documentation index, see [llms.txt](https://apidocs.arionbanki.is/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://apidocs.arionbanki.is/b2b-2013-schema/b2b-services/b2b-unpaid-bills-service.md).

# B2B Unpaid Bills Service

The webservice retrieves information on unpaid bills. The service can retrieve unpaid claims, unpaid optional claims and unpaid direct debits. Bills that have been marked hidden in the online banking interface will not be returned. Additionally, detailed information about a specific bill can be retrieved, including accrued interest on a claim and a breakdown of costs (e.g. incurred default cost and discount).